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This stainless steel alloy is nominally rated at 170,000 psi tensile strength, which is substantially stronger than Grade 8 hardware. Ideally suited for installing exhaust headers, the 8mm studs have a unique nut starter nose and a hex-broached tip - which allows the studs to easily be installed using an Allen wrench. The studs come with easy wrenching 12-point nuts, which work great in the tightest of quarters. Flat washers are also included. Offered in five different lengths, in quantities of 4, 8, 10 and 16-packs.","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376779374697,"sku":"400-8012","price":99.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/400_8012__70068.jpg?v=1589391080"},{"product_id":"super-damper-harmonic-dampers","title":"ATI - Super Damper Harmonic Balancer for Subaru Impreza WRX","description":"ATI's Super Damper for Subaru EJ20, EJ22 and EJ25 engines - Part # 917991. 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All ATI Super Dampers exceed SFI 18.1 Safety Certification and are approved for competition use. ","brand":"ATI","offers":[{"title":"Default Title","offer_id":32376779866217,"sku":"917991","price":372.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/ATI_SUPER_DAMPER__12549.jpg?v=1589391088"},{"product_id":"head-stud-kit","title":"ARP - Nissan SR20DET Head Stud Kit","description":"Pro Series cylinder head studs from ARP are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining and are rated at a whopping 220,000 psi. ARP Pro series kits are also available with 12-point nuts, and all kits come complete with hardened parallel washers for an even load distribution and accurate torque readings.","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376780488809,"sku":"102-4701","price":209.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/102_4701__91332.jpg?v=1589391099"},{"product_id":"comp-roller-rocker","title":"Ferrea - Honda K20 Comp Roller Rocker Arms - Set of 8","description":"The New Acura\/ Honda K20 2nd Gen Roller Rocker is finally here. This Roller Rocker will handle over .650 lift @ 11,000 RPM. We optimized the fulcrum mass weight to 4 grams lighter than the 1st Gen Roller Rocker. We added additional strength towards the shaft area and reduced valve spring harmonics by 8%. 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These chromoly steel studs are heat-treated and have a 190,000 psi tensile strength rating.","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376781078633,"sku":"100-7710","price":38.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/100_7710__34470.jpg?v=1589391099"},{"product_id":"aem-tru-time-adjustable-cam-gear-honda-acura-b-series","title":"AEM - Tru-Time Adjustable Cam Gear (Honda\/Acura B-Series)","description":"AEM TRU-TIME Adjustable Cam Gears increase horsepower and torque without having to change the camshaft(s) and are must-have items for engines that are milled, forced induction, high compression and\/or utilizing aftermarket competition cams. Our gears enable users to match cam timing with their vehicle's tuning state by advancing or retarding the cam profile in one-degree increments via true laser-etched markings. Precision-cut gear teeth ensure no premature wearing of the belt surface and AEM's anodizing on the gear teeth is lab-test proven as the hardest anodizing process on the market.  AEM TRU-TIME Adjustable Cam Gears are available in a multi-spoke, five-bolt design for most vehicles and our classic full-faced, three-bolt design for select applications. Five-bolt cam gears have an “8” in the suffix (23-8XX), and three-bolt cam gears have a “6” in the suffix (23-6XX).      * Increase horsepower and torque without any cam changes and are ideal for heavily modified engines     * Grade-8, six-point hex bolts stand up to repeated adjustments and feature an integral washer flange for greater load distribution     * True laser-etched markings on the leading edge of the gear allow for quick, accurate adjustments     * Hard anodizing on belt surface is lab-tested as the most durable anodizing on the market     * CNC-machined from 6061-T6 billet aluminum     * Comprehensive installation instructions, recommended cam gear settings and decals included     * Manufactured and assembled in the USA     * For Off-Road use only *All AEM Tru-Time Adjustable Cam Gears are sold PER GEAR, DOHC Motors will need to buy Quantity: 2.*","brand":"AEM","offers":[{"title":"Default Title","offer_id":32376781406313,"sku":"23-802BK","price":124.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/23_802BK__06896.jpg?v=1589391104"},{"product_id":"aem-high-volume-fuel-rail","title":"AEM - High Volume Fuel Rail","description":"\u003cp\u003eAEM Electronics high-volume fuel rails feature a 1\/2 in. fuel bore capable of flowing enough fuel to support most high-horsepower applications. This large bore also dampens back pulses created by larger injectors and works perfectly with stock injector sizes. An additional port is included to accommodate a nitrous setup or fuel pressure gauge. Instructions, hardware, fittings, and injector O-rings are also included.\u003c\/p\u003e","brand":"AEM","offers":[{"title":"Acura B18B1, B18C1 \u0026 B18C5","offer_id":32376781439081,"sku":"25-100BK","price":146.95,"currency_code":"USD","in_stock":true},{"title":"Honda B16A2 \u0026 B16A3","offer_id":32376781471849,"sku":"25-103BK","price":156.95,"currency_code":"USD","in_stock":true},{"title":"Honda D16Y7 \u0026 D16Y8","offer_id":32376781570153,"sku":"25-109BK","price":169.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/25_100BK__88696.jpg?v=1589391109"},{"product_id":"aem-adjustable-fuel-pressure-regulator-fits-s2k","title":"AEM - Adjustable Fuel Pressure Regulator (Fits S2K)","description":"AEM's Honda\/Acura Adjustable Fuel Pressure Regulators are capable of supporting enough fuel flow for engines up to 1000 horsepower. AEM's patented interchangeable discharge ports enable the regulator's output to match the output of any fuel pump. AEM includes a custom barb fitting to accommodate the factory fuel hose and the base of each regulator is tapped to accept a -6 AN or 9\/16-inch x 18 fittings.","brand":"AEM","offers":[{"title":"Default Title","offer_id":32376781733993,"sku":"25-301BK","price":193.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/25_301BK__85080.jpg?v=1589391110"},{"product_id":"aem-52mm-boost-digital-gauge-30-35psi","title":"AEM - 52mm Boost Digital Gauge -30-35psi","description":"AEM's Digital Boost Display Gauges combine unsurpassed accuracy, speed and control with an easy-to-read digital LED interface that displays boost in 1 PSI increments, and a sweeping LED \"needle\" that lines the edge and moves as boost from 0 to up to 50 PSI. The boost gauge's digital readout will automatically increase and decrease in intensity due to the built in ambient light sensing photocell. AEM's digital boost gauges include a 0-5v analog output for use with data loggers and virtually any engine management system, such as the Infinity ECU, Series 2 EMS or AQ-1 Data Logger, making it the perfect solution for users who need to monitor and data log boost at high RPM on tuned engines. Each gauge includes interchangeable silver and black bezels and black and white faceplates to personalize the look of your gauge.","brand":"AEM","offers":[{"title":"Default Title","offer_id":32376782061673,"sku":"30-4406","price":179.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/30_4406__48403.jpg?v=1589391108"},{"product_id":"arp-wheel-stud-kit-honda-80-00","title":"ARP - 80-00 Honda M12x2.85inch 4 Wheel Stud Kit","description":"These extra-long ARP wheel studs are designed for today's thick-centered, high-performance and racing wheels. 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These chromoly steel studs are heat-treated and have a 190,000 psi tensile strength rating.","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376782159977,"sku":"100-7717","price":44.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/100_7717__16729.jpg?v=1589391114"},{"product_id":"wheel-stud-kit-miata","title":"ARP - 94-05 Miata Rear Wheel Stud Kit (4 Studs)","description":"These extra-long ARP wheel studs are designed for today's thick-centered, high-performance and racing wheels. These chromoly steel studs are heat-treated and have a 190,000 psi tensile strength rating.","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376782192745,"sku":"100-7720","price":32.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/100_7720__40191.jpg?v=1589391112"},{"product_id":"arp-flywheel-bolt-kit-mitsubishi","title":"ARP - Mitsubishi 2.0L 4G63 Evo 4-9 Flywheel Bolt Kit","description":"These Pro series flywheel bolt kits from ARP give you all that you need to bolt in your flywheel with confidence. They're much stronger than OEM hardware, are forged from aerospace alloy, and are heat-treated prior to thread rolling and machining. These bolts feature an exclusive, flat 12-point head design and a larger-than-stock shank diameter for increased strength and improved flywheel register.","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376782225513,"sku":"107-2803","price":42.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/107_2803__55669.jpg?v=1589391116"},{"product_id":"arp-rod-bolt-kit-4g63","title":"ARP - 03-06 Evo 8\/9 4G63 8mm Rod Bolt Kit","description":"These ARP High Performance series connecting rod bolts are made from seamless and defect-free 8740 chromoly steel. All ARP rod bolts are heat-treated before grinding and thread rolling and have a large underhead radius for greater strength. Guaranteed to pass magnetic inspection testing, these bolts are nearly five times stronger than OEM bolts. They're used in applications ranging from stock replacement to Circle Track, marine, and drag racing engines.","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376782291049,"sku":"107-6002","price":48.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/107_6002__29923.jpg?v=1589391109"},{"product_id":"arp-honda-pressure-plate-bolt-kit-d-series","title":"ARP - Honda Pressure Plate Bolt Kit (D-Series)","description":"The importance of pressure plate bolts in a racing or high performance street applications cannot be emphasized nearly enough. These fasteners play a key role in both the performance and safety of a vehicle. Because of this, ARP has developed special pressure plate bolts that are application-specific to ensure the optimum grip length. ARP offers High Performance Series bolts that are made from a premium-grade chromoly and hardened to a nominal tensile strength of 180,000 psi. ","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376782323817,"sku":"108-2201","price":19.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/108_2201__54081.jpg?v=1589391118"},{"product_id":"arp-honda-pressure-plate-bolt-kit-b-series-k-series","title":"ARP - Honda Pressure Plate Bolt Kit (B-Series \/ K-Series)","description":"The importance of pressure plate bolts in a racing or high performance street applications cannot be emphasized nearly enough. These fasteners play a key role in both the performance and safety of a vehicle. Because of this, ARP has developed special pressure plate bolts that are application-specific to ensure the optimum grip length. ARP offers High Performance Series bolts that are made from a premium-grade chromoly and hardened to a nominal tensile strength of 180,000 psi. ","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376782356585,"sku":"108-2202","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/108_2202__94936.jpg?v=1589391111"},{"product_id":"arp-replacement-rod-bolt-kit","title":"ARP - General Replacement Steel Rod Bolt Kit","description":"A large number of connecting rod manufacturers have chosen ARP bolts as standard equipment. They’re proud to advertise their products as being equipped with ARP rod bolts. And for good reason. The “weak link” in a connecting rod has always been the bolt, and racers know that nobody builds a better bolt than ARP. However, it is critically important to monitor the stretch of each bolt and replace it when it has permanently elongated by .0005è. Below you will find an extensive listing of aftermarket connecting rods and replacement bolt specifications.   In some instances, you may want to go to an ARP rod bolt made from a better grade of material. This will provide you with improved reliability. However, please understand that when you want bolts made from exotic, super high strength materials, the cost will increase significantly. If you’re on a budget, it’s best to go with the most cost-effective solution. This is typically defined by the loads that are carried by the bolts in terms of piston\/rod weight and the rotational speed of the engine. The most cost effective design is the one in which the bolt strength is just great enough to handle its anticipated load – plus a safety margin for the occasional overloads. Using a material which has far more strength than required is not as cost effective – but will definitely give you an extra margin of safety and longer service life.   You should also know that ARP rod bolts are superior to those from other manufacturers. Especially in the area of fatigue strength. Testing has shown ARP rod bolts to have ten times the fatigue strength of other bolts. In the chart below, you’ll find a bar chart that graphically shows the difference between ARP Pro Series rod bolts and the fastener made by a leading competitor. It’s easy to see why ARP bolts are superior. As such, it makes good sense to rely on ARP for optimum connecting rod service and reliability. Make the most of your racing budget and rely on ARP rod bolts. You’ll find the ARP name proudly stamped on each bolt as your assurance of quality.   *Features*  * Forged in-house at ARP using only the finest quality materials  * Heat-treated using special vertical racks to assure complete 360° penetration  * Threads rolled after heat-treat to provide up to 10-times longer fatigue strength  * Precision CNC-machined to exacting specifications  * Specially designed for optimum reliability in each application   *Wave-Loc Features*  * Wave-Loc surface contacts the rod and cap for optimum alignment and reduction of fluctuating stress – which strengthens the rod itself!  * Provides snug fit for all OEM connecting rods (interference range of .001è to .005è), despite wide range of factory rod bolt hole tolerances.  * Available for most applications.  * Superior material grain flow because of patented Wave-Loc surface design as compared to knurled bolts that have sharp edges and “built-in” stress risers.  * Galling and scoring of the rod is virtually eliminated because there is only smooth contact and absolutely no “digging.”   *Materials Used In ARP Connecting Rod Bolts* *8740 CHROME MOLY:* Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180,000 and 210,000 psi.   *AERMET:* With a typical tensile strength of 290,000-310,000 psi, Aermet is a new martensitic super-alloy that is stronger and less expensive than the super-alloy austenitic materials that follow. Because it is capable of achieving incredibly high clamping loads, it is ideal for short but extreme environments like top fuel, funny car and some short track applications. Although Aermet is a maraging steel that is far superior to other high strength steels in its resistance to stress corrosion, it must be kept well-oiled and not exposed to moisture.   *ARP2000:* ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than 8740. While 8740 and ARP2000 share similar characteristics – ARP2000 is capable of achieving a clamp load at 220,000 psi. ARP2000 is used widely in short track and drag racing as an up-grade from 8740 chrome moly in both steel and aluminum rods. Stress corrosion and hydrogen embrittlement are typically not a problem, providing care is taken during installation.   *L19:* This is a premium steel that is processed to deliver superior strength and fatigue properties. L19 is a very high strength material compared to 8740 and ARP2000 and is capable of delivering a clamp load at 260,000 psi. It is primarily used in short track and drag racing applications where inertia loads exceed the clamping capability of ARP2000. Like most high strength, quench and temper steels – L19 requires special care during manufacturing to avoid hydrogen embrittlement. This material is easily contaminated and subject to stress corrosion. It must be kept well-oiled and not exposed to moisture.   *INCONEL 718:* A nickel based material that is in the high temperature, super-alloy class, it is found to be equally suitable in lower temperature applications. This material delivers tensile strengths in the 210,000-230,000 psi range and exhibits improved fatigue properties. Best of all, Inconel 718 is completely immune to hydrogen embrittlement and corrosion.   *ARP3.5 (AMS5844):* While similar to Inconel 718, these superalloys are found in many jet engine and aerospace applications where heat and stress attack the life of critical components. The high cobalt content of this alloy, while expensive, delivers a material with superior fatigue characteristics and typically tensile strength in the 260,000-280,000 psi range. The immunity to hydrogen embrittlement and corrosion of these materials is a significant design consideration. These materials are primarily used in connecting rods where extremely high loads, high RPM and endurance are important factors – Formula 1, NASCAR and IRL applications.   *CUSTOM AGE 625 PLUS:* This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 260,000-280,000 psi.","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376782454889,"sku":"200-6207","price":79.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/200_6207__00419.jpg?v=1589391118"},{"product_id":"arp-nissan-head-stud-kit-rb25","title":"ARP - Nissan RB20\/20DET RB25\/25DET Head Stud Kit","description":"It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.   For openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.   Following heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.   ARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.   You will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!   Premium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.   You won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.   Clearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.   *HIGH PERFORMANCE SERIES* High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.   *PRO SERIES* All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200,000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.     *Head Studs vs Bolts* On many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.    For most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.    Studs also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.   If everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376782520425,"sku":"202-4301","price":190.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/202_4301__47636.jpg?v=1589391113"},{"product_id":"arp-nissan-head-stud-kit-ka24de","title":"ARP - Nissan 2.4L KA24DE 12pt. Head Stud Kit","description":"It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.   For openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.   Following heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.   ARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.   You will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!   Premium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.   You won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.   Clearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.   *HIGH PERFORMANCE SERIES* High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.   *PRO SERIES* All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200,000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.     *Head Studs vs Bolts* On many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.    For most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.    Studs also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.   If everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376782585961,"sku":"202-4304","price":172.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/202_4304__06584.png?v=1589391119"},{"product_id":"arp-nissan-head-stud-kit-vq35","title":"ARP - 03-08 350Z \/ 03-07 G35 VQ35 Head Stud Kit","description":"It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.   For openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.   Following heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.   ARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.   You will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!   Premium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.   You won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.   Clearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.   *HIGH PERFORMANCE SERIES* High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.   *PRO SERIES* All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200,000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.     *Head Studs vs Bolts* On many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.    For most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.    Studs also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.   If everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376782749801,"sku":"202-4701","price":257.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/202_4701__70454.jpg?v=1589391115"},{"product_id":"arp-toyota-supra-head-stud-kit","title":"ARP - 93-98 Supra\/01-05 IS300 2JZGE Head Stud Kit","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFor openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eYou will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003ePremium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eYou won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eClearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*HIGH PERFORMANCE SERIES*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eHigh Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*PRO SERIES*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eAll Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200,000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*Head Studs vs Bolts*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eOn many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFor most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eStuds also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eIf everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376782782569,"sku":"203-4205","price":212.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/203_4205__35745.jpg?v=1589391121"},{"product_id":"arp-rod-bolt-kit-supra-2jzge","title":"ARP - 93-98 Supra 2JZA80 Rod Bolt Kit","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eA large number of connecting rod manufacturers have chosen ARP bolts as standard equipment. They’re proud to advertise their products as being equipped with ARP rod bolts. And for good reason. The “weak link” in a connecting rod has always been the bolt, and racers know that nobody builds a better bolt than ARP. However, it is critically important to monitor the stretch of each bolt and replace it when it has permanently elongated by .0005˝. Below you will find an extensive listing of aftermarket connecting rods and replacement bolt specifications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eIn some instances, you may want to go to an ARP rod bolt made from a better grade of material. This will provide you with improved reliability. However, please understand that when you want bolts made from exotic, super high strength materials, the cost will increase significantly. If you’re on a budget, it’s best to go with the most cost-effective solution. This is typically defined by the loads that are carried by the bolts in terms of piston\/rod weight and the rotational speed of the engine. The most cost effective design is the one in which the bolt strength is just great enough to handle its anticipated load – plus a safety margin for the occasional overloads. Using a material which has far more strength than required is not as cost effective – but will definitely give you an extra margin of safety and longer service life.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eYou should also know that ARP rod bolts are superior to those from other manufacturers. Especially in the area of fatigue strength. Testing has shown ARP rod bolts to have ten times the fatigue strength of other bolts. In the chart below, you’ll find a bar chart that graphically shows the difference between ARP Pro Series rod bolts and the fastener made by a leading competitor. It’s easy to see why ARP bolts are superior. As such, it makes good sense to rely on ARP for optimum connecting rod service and reliability. Make the most of your racing budget and rely on ARP rod bolts. You’ll find the ARP name proudly stamped on each bolt as your assurance of quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*Features*\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Forged in-house at ARP using only the finest quality materials\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Heat-treated using special vertical racks to assure complete 360° penetration\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Threads rolled after heat-treat to provide up to 10-times longer fatigue strength\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Precision CNC-machined to exacting specifications\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Specially designed for optimum reliability in each application\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*Wave-Loc Features*\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Wave-Loc surface contacts the rod and cap for optimum alignment and reduction of fluctuating stress – which strengthens the rod itself!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Provides snug fit for all OEM connecting rods (interference range of .001˝ to .005˝), despite wide range of factory rod bolt hole tolerances.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Available for most applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Superior material grain flow because of patented Wave-Loc surface design as compared to knurled bolts that have sharp edges and “built-in” stress risers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Galling and scoring of the rod is virtually eliminated because there is only smooth contact and absolutely no “digging.”\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*Materials Used In ARP Connecting Rod Bolts*\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*8740 CHROME MOLY:* Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180,000 and 210,000 psi.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*AERMET:* With a typical tensile strength of 290,000-310,000 psi, Aermet is a new martensitic super-alloy that is stronger and less expensive than the super-alloy austenitic materials that follow. Because it is capable of achieving incredibly high clamping loads, it is ideal for short but extreme environments like top fuel, funny car and some short track applications. Although Aermet is a maraging steel that is far superior to other high strength steels in its resistance to stress corrosion, it must be kept well-oiled and not exposed to moisture.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*ARP2000:* ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than 8740. While 8740 and ARP2000 share similar characteristics – ARP2000 is capable of achieving a clamp load at 220,000 psi. ARP2000 is used widely in short track and drag racing as an up-grade from 8740 chrome moly in both steel and aluminum rods. Stress corrosion and hydrogen embrittlement are typically not a problem, providing care is taken during installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*L19:* This is a premium steel that is processed to deliver superior strength and fatigue properties. L19 is a very high strength material compared to 8740 and ARP2000 and is capable of delivering a clamp load at 260,000 psi. It is primarily used in short track and drag racing applications where inertia loads exceed the clamping capability of ARP2000. Like most high strength, quench and temper steels – L19 requires special care during manufacturing to avoid hydrogen embrittlement. This material is easily contaminated and subject to stress corrosion. It must be kept well-oiled and not exposed to moisture.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*INCONEL 718:* A nickel based material that is in the high temperature, super-alloy class, it is found to be equally suitable in lower temperature applications. This material delivers tensile strengths in the 210,000-230,000 psi range and exhibits improved fatigue properties. Best of all, Inconel 718 is completely immune to hydrogen embrittlement and corrosion.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*ARP3.5 (AMS5844):* While similar to Inconel 718, these superalloys are found in many jet engine and aerospace applications where heat and stress attack the life of critical components. The high cobalt content of this alloy, while expensive, delivers a material with superior fatigue characteristics and typically tensile strength in the 260,000-280,000 psi range. The immunity to hydrogen embrittlement and corrosion of these materials is a significant design consideration. These materials are primarily used in connecting rods where extremely high loads, high RPM and endurance are important factors – Formula 1, NASCAR and IRL applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*CUSTOM AGE 625 PLUS:* This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 260,000-280,000 psi.\u003c\/span\u003e\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376782815337,"sku":"203-6005","price":142.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/203_6005__03457.jpg?v=1589391113"},{"product_id":"arp-volkswagen-head-stud-kit-vr6","title":"ARP - Volkswagen VR6 12pt Undercut Head Stud Kit","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFor openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eYou will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003ePremium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eYou won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eClearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*HIGH PERFORMANCE SERIES*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eHigh Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*PRO SERIES*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eAll Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200,000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*Head Studs vs Bolts*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eOn many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFor most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eStuds also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eIf everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376782848105,"sku":"204-4705","price":288.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/204_4705__55016.png?v=1589391123"},{"product_id":"arp-honda-flywheel-bolt-kit-rover-k-series","title":"ARP - Rover K Series Flywheel Bolt Kit","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"panel panel-default\" data-mce-fragment=\"1\"\u003e\n\u003cdiv id=\"collapseThree\" class=\"panel-collapse collapse in\" role=\"tabpanel\" aria-labelledby=\"headingThree\" aria-expanded=\"true\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"panel-body\" data-mce-fragment=\"1\"\u003e\n\u003cp class=\"prod-overview\" data-mce-fragment=\"1\"\u003eFlywheel and Flexplate bolts play an important role in the performance and safety of race cars and street machines alike. That’s why the fastener experts at ARP have developed special bolts that are far superior to OEM hardware. ARP offers two styles of Flywheel\/Flexplate bolts: High Performance and Pro Series. They are both forged from aerospace alloy and heat-treated prior to thread rolling and machining. Both feature an exclusive, flat, 12-point head design and larger than stock shank diameter for increased strength and improved flywheel register. The popular High Performance series is rated at 180,000 psi, and the premium grade Pro Series, originally developed for NASCAR Winston Cup competition, has a 200,000 psi rating. Complete with washers and nuts where applicable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376782913641,"sku":"206-2803","price":43.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/206_2803__61407.jpg?v=1589391116"},{"product_id":"arp-mitsubishi-4g63-head-stud-kit","title":"ARP - 03-06 Evo 8\/9 \/ 95-98 Eclipse 4G63 2nd Gen Head Stud Kit","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFor openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eYou will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003ePremium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eYou won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eClearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*HIGH PERFORMANCE SERIES*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eHigh Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*PRO SERIES*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eAll Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200,000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*Head Studs vs Bolts*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eOn many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFor most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eStuds also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eIf everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376782946409,"sku":"207-4203","price":151.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/207_4203__25942.jpg?v=1589391119"},{"product_id":"arp-mitsubishi-evo-x-head-stud-kit-4b11t","title":"ARP - 08+ Evo X Mitsubishi 2.0L (4B11) Turbo Head Stud Kit","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFor openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eYou will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003ePremium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eYou won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eClearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*HIGH PERFORMANCE SERIES*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eHigh Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*PRO SERIES*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eAll Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200,000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*Head Studs vs Bolts*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eOn many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFor most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eStuds also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eIf everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376782979177,"sku":"207-4206","price":209.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/207_4206__29839.jpg?v=1589391117"},{"product_id":"arp-mitsubishi-main-stud-kit-4g63","title":"ARP - 03-06 Mitsubishi Evo Main Stud Kit","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*Main Studs* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eThere are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel-ground washers and high quality nuts. Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in place. The studs are manufactured from 8740 chrome moly steel, heat-treated in-house to 200,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*Main Bolts* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eFar superior to any other main bolt kit offered for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly, all bolts feature generous under-head radius and rolled threads for the utmost reliability. The threads are rolled after heat-treating, which makes them about 1000% longer fatigue life than most main bolts, which are threaded prior to heat-treating. Available in the popular High Performance Series, which, at a nominal rating of 180,000 psi, is a premium replacement for OEM fasteners, or the 200,000 psi nominal rated Pro Series, application-specific main bolts with reduced wrenching head and are designed for use in competition applications. Parallel-ground, hardened washers are included with each kit. \u003c\/span\u003e\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376783077481,"sku":"207-5401","price":83.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/207_5401__17912.jpg?v=1589391121"},{"product_id":"harmonic-damper-bolt-kit","title":"ARP - Honda B16\/B18 Balancer Bolt Kit","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eAs the crankshaft flexes and twists, the balancer absorbs incredible amounts of kinetic energy. To ensure that the balancer is locked in position, ARP has developed these ultra strong 200,000 psi bolts that let you exert maximum clamping force. Special features include 1\/4? thick, wide area washer and an extra tall 12-point head that accepts a deep socket and eliminates the worry of stripping the head. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*Square Drive Balancer Bolts* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eARP offers a special version of its rugged 200,000 psi rated balancer bolt that can accept a standard 1\/2˝ drive ratchet or breaker bar to facilitate rotating the crank assembly. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* 1\/2˝ square drive forged into bolt head, enabling the rotation of an engine with any 1\/2˝ drive tool \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Made from heat-treated 8740 chrome moly steel with heavyduty black oxide finish \u003c\/span\u003e\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376783110249,"sku":"208-2501","price":37.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/208_2501__99175.jpg?v=1589391117"},{"product_id":"arp-honda-flywheel-bolt-kit-d-series","title":"ARP - Honda Flywheel Bolt Kit (D-Series)","description":"Specifications UHL 0.780è Thread Size M12 x 1.0 Wrenching 19mm ","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376783306857,"sku":"208-2801","price":58.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/arp-208-2801_xl__72646.jpg?v=1589391123"},{"product_id":"arp-honda-flywheel-bolt-kit-b-series","title":"ARP - Honda Flywheel Bolt Kit (B-Series)","description":"Specifications  UHL 0.890è   Thread Size M12 x 1.0   Wrenching 19mm   ","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376783405161,"sku":"208-2802","price":61.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/208_2802__90595.jpg?v=1589391118"},{"product_id":"arp-honda-head-stud-kit-d16","title":"ARP - Honda D16A \/ D16Z M10 Head Stud Kit","description":"ARP uses premium grade 8740 alloy that is heat treated to 200,000 p.s.i. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best. Following heat treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. ARP studs are thread rolled after heat treat which gives them about 1000% better fatigue strength than studs that are threaded prior to heat treat (a very common industry practice). It costs more to do it this way because it’s tough on tooling but the results are well worth the extra effort. Part # 208-4301 Application:1992-1995 Honda Civic EX \/ Si 1.6L SOHC VTEC (D16Z6) 1993-1995 Honda Del Sol Si 1.6L SOHC VTEC (D16Z6) JDM D15B VTEC ","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376783437929,"sku":"208-4301","price":150.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/208_4301__37205.jpg?v=1589391125"},{"product_id":"arp-honda-acura-head-stud-kit-b18c1","title":"ARP - Honda\/Acura B18C1 VTEC 12pt Head Stud Kit","description":"ARP - Honda\/Acura Head Stud Kit (B18C1)","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376783470697,"sku":"208-4303","price":180.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/208_4303__34693.jpg?v=1589391120"},{"product_id":"arp-honda-head-stud-kit-h22","title":"ARP - Honda H22 A4 VTEC Head Stud Kit","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFor openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eYou will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003ePremium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eYou won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eClearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*HIGH PERFORMANCE SERIES*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eHigh Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*PRO SERIES*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eAll Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200,000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*Head Studs vs Bolts*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eOn many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFor most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eStuds also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eIf everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376783503465,"sku":"208-4304","price":202.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/208_4305__32075.jpg?v=1589391127"},{"product_id":"arp-honda-head-stud-kit-d16y","title":"ARP - Honda D16Y Head Stud Kit","description":"\u003cp class=\"p1\"\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eFor openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eFollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eYou will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!\u003c\/p\u003e\n\u003cp class=\"p1\"\u003ePremium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eYou won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eClearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e*HIGH PERFORMANCE SERIES*\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eHigh Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e*PRO SERIES*\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eAll Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200,000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e*Head Studs vs Bolts*\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eOn many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.\u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eFor most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.\u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eStuds also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eIf everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376783536233,"sku":"208-4305","price":137.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/208_4305__85680.jpg?v=1589391119"},{"product_id":"arp-honda-fit-l15-head-stud-kit-1-5l","title":"ARP - Honda 1.5L L15 SOHC 4Cyl Head Stud Kit","description":"\u003cmeta charset=\"utf-8\"\u003e\u003ca data-nested-link-target=\"true\" data-mce-fragment=\"1\"\u003eARP - Honda Fit L15 Head Stud Kit (1.5L)\u003c\/a\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376783569001,"sku":"208-4308","price":225.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/208_4308__83305.jpg?v=1589391122"},{"product_id":"arp-honda-head-stud-kit-b16","title":"ARP - Honda B16A Head Stud Kit","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eFor openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eFollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e ARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eYou will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing! \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003ePremium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eYou won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eClearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*HIGH PERFORMANCE SERIES* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eHigh Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*PRO SERIES* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eAll Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200,000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*Head Studs vs Bolts* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eOn many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eFor most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eStuds also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eIf everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.\u003c\/span\u003e\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376783601769,"sku":"208-4601","price":178.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/208_4601__25584.jpg?v=1589391120"},{"product_id":"arp-honda-acura-head-stud-kit-k20-k24","title":"ARP - Honda\/Acura K20A (A2 \u0026 A3) Head Stud Kit","description":"Obtaining the optimum cylinder head to block sealing is especially critical in small displacement engines employing high compression pistons or power adders like turbochargers, nitrous oxide and superchargers. That’s why ARP head studs are popular among leading Sport Compact\/Import racers. You should know that ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is precisely heat-treated to 200,000 psi. Following heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.ARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat.  ","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376783667305,"sku":"208-4701","price":185.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/208_4701__41442.jpg?v=1589391126"},{"product_id":"arp-honda-s2000-head-stud-kit-f20c","title":"ARP - Honda F20C Head Stud Kit","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFor openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eYou will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003ePremium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eYou won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eClearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*HIGH PERFORMANCE SERIES*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eHigh Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*PRO SERIES*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eAll Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200,000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e*Head Studs vs Bolts*\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eOn many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eFor most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eStuds also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.\u003c\/p\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eIf everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376783765609,"sku":"208-4702","price":183.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/208_4702__04837.jpg?v=1589391122"},{"product_id":"arp-subaru-head-stud-kit-ej20-ej25","title":"ARP - Subaru WRX EJ20 \u0026 EJ25 Head Stud Kit","description":"Pro series cylinder head studs from ARP are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining and are rated at a whopping 220,000 psi. ARP Pro series kits are also available with 12-point nuts, and all kits come complete with hardened parallel washers for an even load distribution and accurate torque readings.","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376784126057,"sku":"260-4701","price":257.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/260_4701__58730.jpg?v=1589391127"},{"product_id":"main-stud-kit-b18","title":"ARP - Acura B18A1\/B1 Main Stud Kit","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*Main Studs* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eThere are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel-ground washers and high quality nuts. Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in place. The studs are manufactured from 8740 chrome moly steel, heat-treated in-house to 200,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*Main Bolts* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eFar superior to any other main bolt kit offered for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly, all bolts feature generous under-head radius and rolled threads for the utmost reliability. The threads are rolled after heat-treating, which makes them about 1000% longer fatigue life than most main bolts, which are threaded prior to heat-treating. Available in the popular High Performance Series, which, at a nominal rating of 180,000 psi, is a premium replacement for OEM fasteners, or the 200,000 psi nominal rated Pro Series, application-specific main bolts with reduced wrenching head and are designed for use in competition applications. Parallel-ground, hardened washers are included with each kit. \u003c\/span\u003e\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376784158825,"sku":"208-5404","price":111.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/208_5404__13608.jpg?v=1589391123"},{"product_id":"arp-rod-bolt-kit-1-2-6l","title":"ARP - Honda\/Acura 1.2L\u00261.6L M8 Rod Bolt Kit","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eA large number of connecting rod manufacturers have chosen ARP bolts as standard equipment. They’re proud to advertise their products as being equipped with ARP rod bolts. And for good reason. The “weak link” in a connecting rod has always been the bolt, and racers know that nobody builds a better bolt than ARP. However, it is critically important to monitor the stretch of each bolt and replace it when it has permanently elongated by .0005˝. Below you will find an extensive listing of aftermarket connecting rods and replacement bolt specifications. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eIn some instances, you may want to go to an ARP rod bolt made from a better grade of material. This will provide you with improved reliability. However, please understand that when you want bolts made from exotic, super high strength materials, the cost will increase significantly. If you’re on a budget, it’s best to go with the most cost-effective solution. This is typically defined by the loads that are carried by the bolts in terms of piston\/rod weight and the rotational speed of the engine. The most cost effective design is the one in which the bolt strength is just great enough to handle its anticipated load – plus a safety margin for the occasional overloads. Using a material which has far more strength than required is not as cost effective – but will definitely give you an extra margin of safety and longer service life. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eYou should also know that ARP rod bolts are superior to those from other manufacturers. Especially in the area of fatigue strength. Testing has shown ARP rod bolts to have ten times the fatigue strength of other bolts. In the chart below, you’ll find a bar chart that graphically shows the difference between ARP Pro Series rod bolts and the fastener made by a leading competitor. It’s easy to see why ARP bolts are superior. As such, it makes good sense to rely on ARP for optimum connecting rod service and reliability. Make the most of your racing budget and rely on ARP rod bolts. You’ll find the ARP name proudly stamped on each bolt as your assurance of quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e *Features* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Forged in-house at ARP using only the finest quality materials \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Heat-treated using special vertical racks to assure complete 360° penetration \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Threads rolled after heat-treat to provide up to 10-times longer fatigue strength \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Precision CNC-machined to exacting specifications \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Specially designed for optimum reliability in each application\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e *Wave-Loc Features* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Wave-Loc surface contacts the rod and cap for optimum alignment and reduction of fluctuating stress – which strengthens the rod itself! \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Provides snug fit for all OEM connecting rods (interference range of .001˝ to .005˝), despite wide range of factory rod bolt hole tolerances. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Available for most applications. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Superior material grain flow because of patented Wave-Loc surface design as compared to knurled bolts that have sharp edges and “built-in” stress risers. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Galling and scoring of the rod is virtually eliminated because there is only smooth contact and absolutely no “digging.” \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*Materials Used In ARP Connecting Rod Bolts* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*8740 CHROME MOLY:* Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180,000 and 210,000 psi. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*AERMET:* With a typical tensile strength of 290,000-310,000 psi, Aermet is a new martensitic super-alloy that is stronger and less expensive than the super-alloy austenitic materials that follow. Because it is capable of achieving incredibly high clamping loads, it is ideal for short but extreme environments like top fuel, funny car and some short track applications. Although Aermet is a maraging steel that is far superior to other high strength steels in its resistance to stress corrosion, it must be kept well-oiled and not exposed to moisture. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*ARP2000:* ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than 8740. While 8740 and ARP2000 share similar characteristics – ARP2000 is capable of achieving a clamp load at 220,000 psi. ARP2000 is used widely in short track and drag racing as an up-grade from 8740 chrome moly in both steel and aluminum rods. Stress corrosion and hydrogen embrittlement are typically not a problem, providing care is taken during installation. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*L19:* This is a premium steel that is processed to deliver superior strength and fatigue properties. L19 is a very high strength material compared to 8740 and ARP2000 and is capable of delivering a clamp load at 260,000 psi. It is primarily used in short track and drag racing applications where inertia loads exceed the clamping capability of ARP2000. Like most high strength, quench and temper steels – L19 requires special care during manufacturing to avoid hydrogen embrittlement. This material is easily contaminated and subject to stress corrosion. It must be kept well-oiled and not exposed to moisture. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*INCONEL 718:* A nickel based material that is in the high temperature, super-alloy class, it is found to be equally suitable in lower temperature applications. This material delivers tensile strengths in the 210,000-230,000 psi range and exhibits improved fatigue properties. Best of all, Inconel 718 is completely immune to hydrogen embrittlement and corrosion. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*ARP3.5 (AMS5844):* While similar to Inconel 718, these superalloys are found in many jet engine and aerospace applications where heat and stress attack the life of critical components. The high cobalt content of this alloy, while expensive, delivers a material with superior fatigue characteristics and typically tensile strength in the 260,000-280,000 psi range. The immunity to hydrogen embrittlement and corrosion of these materials is a significant design consideration. These materials are primarily used in connecting rods where extremely high loads, high RPM and endurance are important factors – Formula 1, NASCAR and IRL applications. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*CUSTOM AGE 625 PLUS:* This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 260,000-280,000 psi. \u003c\/span\u003e\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376784322665,"sku":"208-6001","price":51.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/208_6001__99793.jpg?v=1589391129"},{"product_id":"arp-rod-bolt-kit-s2000","title":"ARP - Honda S2000 Rod Bolt Kit","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eA large number of connecting rod manufacturers have chosen ARP bolts as standard equipment. They’re proud to advertise their products as being equipped with ARP rod bolts. And for good reason. The “weak link” in a connecting rod has always been the bolt, and racers know that nobody builds a better bolt than ARP. However, it is critically important to monitor the stretch of each bolt and replace it when it has permanently elongated by .0005˝. Below you will find an extensive listing of aftermarket connecting rods and replacement bolt specifications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eIn some instances, you may want to go to an ARP rod bolt made from a better grade of material. This will provide you with improved reliability. However, please understand that when you want bolts made from exotic, super high strength materials, the cost will increase significantly. If you’re on a budget, it’s best to go with the most cost-effective solution. This is typically defined by the loads that are carried by the bolts in terms of piston\/rod weight and the rotational speed of the engine. The most cost effective design is the one in which the bolt strength is just great enough to handle its anticipated load – plus a safety margin for the occasional overloads. Using a material which has far more strength than required is not as cost effective – but will definitely give you an extra margin of safety and longer service life.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eYou should also know that ARP rod bolts are superior to those from other manufacturers. Especially in the area of fatigue strength. Testing has shown ARP rod bolts to have ten times the fatigue strength of other bolts. In the chart below, you’ll find a bar chart that graphically shows the difference between ARP Pro Series rod bolts and the fastener made by a leading competitor. It’s easy to see why ARP bolts are superior. As such, it makes good sense to rely on ARP for optimum connecting rod service and reliability. Make the most of your racing budget and rely on ARP rod bolts. You’ll find the ARP name proudly stamped on each bolt as your assurance of quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*Features*\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Forged in-house at ARP using only the finest quality materials\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Heat-treated using special vertical racks to assure complete 360° penetration\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Threads rolled after heat-treat to provide up to 10-times longer fatigue strength\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Precision CNC-machined to exacting specifications\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Specially designed for optimum reliability in each application\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*Wave-Loc Features*\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Wave-Loc surface contacts the rod and cap for optimum alignment and reduction of fluctuating stress – which strengthens the rod itself!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Provides snug fit for all OEM connecting rods (interference range of .001˝ to .005˝), despite wide range of factory rod bolt hole tolerances.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Available for most applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Superior material grain flow because of patented Wave-Loc surface design as compared to knurled bolts that have sharp edges and “built-in” stress risers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Galling and scoring of the rod is virtually eliminated because there is only smooth contact and absolutely no “digging.”\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*Materials Used In ARP Connecting Rod Bolts*\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*8740 CHROME MOLY:* Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180,000 and 210,000 psi.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*AERMET:* With a typical tensile strength of 290,000-310,000 psi, Aermet is a new martensitic super-alloy that is stronger and less expensive than the super-alloy austenitic materials that follow. Because it is capable of achieving incredibly high clamping loads, it is ideal for short but extreme environments like top fuel, funny car and some short track applications. Although Aermet is a maraging steel that is far superior to other high strength steels in its resistance to stress corrosion, it must be kept well-oiled and not exposed to moisture.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*ARP2000:* ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than 8740. While 8740 and ARP2000 share similar characteristics – ARP2000 is capable of achieving a clamp load at 220,000 psi. ARP2000 is used widely in short track and drag racing as an up-grade from 8740 chrome moly in both steel and aluminum rods. Stress corrosion and hydrogen embrittlement are typically not a problem, providing care is taken during installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*L19:* This is a premium steel that is processed to deliver superior strength and fatigue properties. L19 is a very high strength material compared to 8740 and ARP2000 and is capable of delivering a clamp load at 260,000 psi. It is primarily used in short track and drag racing applications where inertia loads exceed the clamping capability of ARP2000. Like most high strength, quench and temper steels – L19 requires special care during manufacturing to avoid hydrogen embrittlement. This material is easily contaminated and subject to stress corrosion. It must be kept well-oiled and not exposed to moisture.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*INCONEL 718:* A nickel based material that is in the high temperature, super-alloy class, it is found to be equally suitable in lower temperature applications. This material delivers tensile strengths in the 210,000-230,000 psi range and exhibits improved fatigue properties. Best of all, Inconel 718 is completely immune to hydrogen embrittlement and corrosion.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*ARP3.5 (AMS5844):* While similar to Inconel 718, these superalloys are found in many jet engine and aerospace applications where heat and stress attack the life of critical components. The high cobalt content of this alloy, while expensive, delivers a material with superior fatigue characteristics and typically tensile strength in the 260,000-280,000 psi range. The immunity to hydrogen embrittlement and corrosion of these materials is a significant design consideration. These materials are primarily used in connecting rods where extremely high loads, high RPM and endurance are important factors – Formula 1, NASCAR and IRL applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*CUSTOM AGE 625 PLUS:* This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 260,000-280,000 psi.\u003c\/span\u003e\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376784552041,"sku":"208-6002","price":131.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/208_6002__51141.jpg?v=1589391125"},{"product_id":"arp-rod-bolt-kit-k20","title":"ARP - Honda\/Acura K20A Rod Bolt Kit","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eA large number of connecting rod manufacturers have chosen ARP bolts as standard equipment. They’re proud to advertise their products as being equipped with ARP rod bolts. And for good reason. The “weak link” in a connecting rod has always been the bolt, and racers know that nobody builds a better bolt than ARP. However, it is critically important to monitor the stretch of each bolt and replace it when it has permanently elongated by .0005˝. Below you will find an extensive listing of aftermarket connecting rods and replacement bolt specifications. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eIn some instances, you may want to go to an ARP rod bolt made from a better grade of material. This will provide you with improved reliability. However, please understand that when you want bolts made from exotic, super high strength materials, the cost will increase significantly. If you’re on a budget, it’s best to go with the most cost-effective solution. This is typically defined by the loads that are carried by the bolts in terms of piston\/rod weight and the rotational speed of the engine. The most cost effective design is the one in which the bolt strength is just great enough to handle its anticipated load – plus a safety margin for the occasional overloads. Using a material which has far more strength than required is not as cost effective – but will definitely give you an extra margin of safety and longer service life. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eYou should also know that ARP rod bolts are superior to those from other manufacturers. Especially in the area of fatigue strength. Testing has shown ARP rod bolts to have ten times the fatigue strength of other bolts. In the chart below, you’ll find a bar chart that graphically shows the difference between ARP Pro Series rod bolts and the fastener made by a leading competitor. It’s easy to see why ARP bolts are superior. As such, it makes good sense to rely on ARP for optimum connecting rod service and reliability. Make the most of your racing budget and rely on ARP rod bolts. You’ll find the ARP name proudly stamped on each bolt as your assurance of quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e *Features* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Forged in-house at ARP using only the finest quality materials \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Heat-treated using special vertical racks to assure complete 360° penetration \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Threads rolled after heat-treat to provide up to 10-times longer fatigue strength \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Precision CNC-machined to exacting specifications \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Specially designed for optimum reliability in each application\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e *Wave-Loc Features* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Wave-Loc surface contacts the rod and cap for optimum alignment and reduction of fluctuating stress – which strengthens the rod itself! \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Provides snug fit for all OEM connecting rods (interference range of .001˝ to .005˝), despite wide range of factory rod bolt hole tolerances. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Available for most applications. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Superior material grain flow because of patented Wave-Loc surface design as compared to knurled bolts that have sharp edges and “built-in” stress risers. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Galling and scoring of the rod is virtually eliminated because there is only smooth contact and absolutely no “digging.” \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*Materials Used In ARP Connecting Rod Bolts* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*8740 CHROME MOLY:* Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180,000 and 210,000 psi. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*AERMET:* With a typical tensile strength of 290,000-310,000 psi, Aermet is a new martensitic super-alloy that is stronger and less expensive than the super-alloy austenitic materials that follow. Because it is capable of achieving incredibly high clamping loads, it is ideal for short but extreme environments like top fuel, funny car and some short track applications. Although Aermet is a maraging steel that is far superior to other high strength steels in its resistance to stress corrosion, it must be kept well-oiled and not exposed to moisture. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*ARP2000:* ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than 8740. While 8740 and ARP2000 share similar characteristics – ARP2000 is capable of achieving a clamp load at 220,000 psi. ARP2000 is used widely in short track and drag racing as an up-grade from 8740 chrome moly in both steel and aluminum rods. Stress corrosion and hydrogen embrittlement are typically not a problem, providing care is taken during installation. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*L19:* This is a premium steel that is processed to deliver superior strength and fatigue properties. L19 is a very high strength material compared to 8740 and ARP2000 and is capable of delivering a clamp load at 260,000 psi. It is primarily used in short track and drag racing applications where inertia loads exceed the clamping capability of ARP2000. Like most high strength, quench and temper steels – L19 requires special care during manufacturing to avoid hydrogen embrittlement. This material is easily contaminated and subject to stress corrosion. It must be kept well-oiled and not exposed to moisture. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*INCONEL 718:* A nickel based material that is in the high temperature, super-alloy class, it is found to be equally suitable in lower temperature applications. This material delivers tensile strengths in the 210,000-230,000 psi range and exhibits improved fatigue properties. Best of all, Inconel 718 is completely immune to hydrogen embrittlement and corrosion. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*ARP3.5 (AMS5844):* While similar to Inconel 718, these superalloys are found in many jet engine and aerospace applications where heat and stress attack the life of critical components. The high cobalt content of this alloy, while expensive, delivers a material with superior fatigue characteristics and typically tensile strength in the 260,000-280,000 psi range. The immunity to hydrogen embrittlement and corrosion of these materials is a significant design consideration. These materials are primarily used in connecting rods where extremely high loads, high RPM and endurance are important factors – Formula 1, NASCAR and IRL applications. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*CUSTOM AGE 625 PLUS:* This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 260,000-280,000 psi. \u003c\/span\u003e\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376784584809,"sku":"208-6003","price":131.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/208_6003__33146.jpg?v=1589391129"},{"product_id":"arp-rod-bolt-kit-1-8","title":"ARP - Honda\/Acura 1.28L M9 Rod Bolt Kit","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eA large number of connecting rod manufacturers have chosen ARP bolts as standard equipment. They’re proud to advertise their products as being equipped with ARP rod bolts. And for good reason. The “weak link” in a connecting rod has always been the bolt, and racers know that nobody builds a better bolt than ARP. However, it is critically important to monitor the stretch of each bolt and replace it when it has permanently elongated by .0005˝. Below you will find an extensive listing of aftermarket connecting rods and replacement bolt specifications. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eIn some instances, you may want to go to an ARP rod bolt made from a better grade of material. This will provide you with improved reliability. However, please understand that when you want bolts made from exotic, super high strength materials, the cost will increase significantly. If you’re on a budget, it’s best to go with the most cost-effective solution. This is typically defined by the loads that are carried by the bolts in terms of piston\/rod weight and the rotational speed of the engine. The most cost effective design is the one in which the bolt strength is just great enough to handle its anticipated load – plus a safety margin for the occasional overloads. Using a material which has far more strength than required is not as cost effective – but will definitely give you an extra margin of safety and longer service life. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eYou should also know that ARP rod bolts are superior to those from other manufacturers. Especially in the area of fatigue strength. Testing has shown ARP rod bolts to have ten times the fatigue strength of other bolts. In the chart below, you’ll find a bar chart that graphically shows the difference between ARP Pro Series rod bolts and the fastener made by a leading competitor. It’s easy to see why ARP bolts are superior. As such, it makes good sense to rely on ARP for optimum connecting rod service and reliability. Make the most of your racing budget and rely on ARP rod bolts. You’ll find the ARP name proudly stamped on each bolt as your assurance of quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e *Features* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Forged in-house at ARP using only the finest quality materials \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Heat-treated using special vertical racks to assure complete 360° penetration \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Threads rolled after heat-treat to provide up to 10-times longer fatigue strength \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Precision CNC-machined to exacting specifications \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Specially designed for optimum reliability in each application\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e *Wave-Loc Features* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Wave-Loc surface contacts the rod and cap for optimum alignment and reduction of fluctuating stress – which strengthens the rod itself! \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Provides snug fit for all OEM connecting rods (interference range of .001˝ to .005˝), despite wide range of factory rod bolt hole tolerances. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Available for most applications. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Superior material grain flow because of patented Wave-Loc surface design as compared to knurled bolts that have sharp edges and “built-in” stress risers. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e* Galling and scoring of the rod is virtually eliminated because there is only smooth contact and absolutely no “digging.” \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*Materials Used In ARP Connecting Rod Bolts* \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*8740 CHROME MOLY:* Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180,000 and 210,000 psi. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*AERMET:* With a typical tensile strength of 290,000-310,000 psi, Aermet is a new martensitic super-alloy that is stronger and less expensive than the super-alloy austenitic materials that follow. Because it is capable of achieving incredibly high clamping loads, it is ideal for short but extreme environments like top fuel, funny car and some short track applications. Although Aermet is a maraging steel that is far superior to other high strength steels in its resistance to stress corrosion, it must be kept well-oiled and not exposed to moisture. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*ARP2000:* ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than 8740. While 8740 and ARP2000 share similar characteristics – ARP2000 is capable of achieving a clamp load at 220,000 psi. ARP2000 is used widely in short track and drag racing as an up-grade from 8740 chrome moly in both steel and aluminum rods. Stress corrosion and hydrogen embrittlement are typically not a problem, providing care is taken during installation. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*L19:* This is a premium steel that is processed to deliver superior strength and fatigue properties. L19 is a very high strength material compared to 8740 and ARP2000 and is capable of delivering a clamp load at 260,000 psi. It is primarily used in short track and drag racing applications where inertia loads exceed the clamping capability of ARP2000. Like most high strength, quench and temper steels – L19 requires special care during manufacturing to avoid hydrogen embrittlement. This material is easily contaminated and subject to stress corrosion. It must be kept well-oiled and not exposed to moisture. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*INCONEL 718:* A nickel based material that is in the high temperature, super-alloy class, it is found to be equally suitable in lower temperature applications. This material delivers tensile strengths in the 210,000-230,000 psi range and exhibits improved fatigue properties. Best of all, Inconel 718 is completely immune to hydrogen embrittlement and corrosion. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*ARP3.5 (AMS5844):* While similar to Inconel 718, these superalloys are found in many jet engine and aerospace applications where heat and stress attack the life of critical components. The high cobalt content of this alloy, while expensive, delivers a material with superior fatigue characteristics and typically tensile strength in the 260,000-280,000 psi range. The immunity to hydrogen embrittlement and corrosion of these materials is a significant design consideration. These materials are primarily used in connecting rods where extremely high loads, high RPM and endurance are important factors – Formula 1, NASCAR and IRL applications. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*CUSTOM AGE 625 PLUS:* This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 260,000-280,000 psi. \u003c\/span\u003e\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":32376784617577,"sku":"208-6401","price":105.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/208_6401__55659.jpg?v=1589391127"},{"product_id":"ati-super-damper-harmonic-balancer-h-series-street","title":"ATI - Super Damper Harmonic Balancer H-Series - Street","description":"Honda H Series The ATI Honda H-Series Super Damper comes with laser-etched timing marks and is a direct replacement for the stock OEM unit. The street damper features a single serpentine belt drive on the outer shell to utilize the factory serpentine belt set-up and comes with a removable bolt-on P\/S pulley. All ATI Super Dampers exceed SFI 18.1 Safety Certification and are approved for competition use. Available for '93 - '01 Honda Prelude 2.2L DOHC and '94 - '02 Honda Accord 2.2 \u0026amp; 2.3L       ALUMINUM SHELL   CRANKSHAFT HUBPART NUMBERS     7.074\" OD   6.780\" OD     2 RING   2 RING   STEEL     TOTAL WEIGHTINERTIA WEIGHT   5.00 lbs3.40 lbs   3.75 lbs2.20 lbs   5.25 lbs3.50 lbs   AVG WEIGHT2.4 lbs    INTERNAL BALANCE DAMPER ASSEMBLY PART NUMBERS    HONDAH SERIES4 CYL    RACE - SMOOTH OUTER SHELL - NO BELT DRIVES  918469 [1]   918467 [1]      916054M     STREET - 400 HP MAX      918468 [2]   916054    ","brand":"ATI","offers":[{"title":"Default Title","offer_id":32376784650345,"sku":"918468","price":408.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/ATI_SUPER_DAMPER__82482.jpg?v=1589391130"},{"product_id":"ati-super-damper-harmonic-balancer-b-series-race","title":"ATI - Super Damper Harmonic Balancer B-Series - Race","description":"ATI’s 7” and 6.325” race versions are built with all-out power in mind. You won’t find drives for A\/C and power steering here. The alternator drive is built into the hub with laser engraved 360° timing marks on outer damper shell. ","brand":"ATI","offers":[{"title":"Default Title","offer_id":32376784683113,"sku":"918471","price":358.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/ATI_SUPER_DAMPER__50571.jpg?v=1589391123"},{"product_id":"autometer-2-1-16-clock-12-hour-z-series","title":"AutoMeter - 2-1\/16\" Clock - 12-Hour Z-SERIES","description":"AutoMeter - 2-1\/16\" Clock - 12-Hour Z-SERIES","brand":"AutoMeter","offers":[{"title":"Default Title","offer_id":32376784781417,"sku":"2632","price":161.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0296\/2355\/0057\/products\/2632__71178.jpg?v=1589391125"}],"url":"https:\/\/onlinetsm.com\/collections\/added-manually-from-turn-14.oembed?page=19","provider":"Tri-State Motorsports","version":"1.0","type":"link"}