Skip to product information
1 of 1

Ferrea - Acura RSX ( K20) Dual Valve Springs - High-Lift Drag Racing

Ferrea - Acura RSX ( K20) Dual Valve Springs - High-Lift Drag Racing

SKU: S10149

Category: Spring Kits

Regular price $621.76
Regular price Sale price $621.76
Sale Sold out
Shipping calculated at checkout.
No reviews
Harmonics or high-frequency fatigue is present in all racing engines and will usually destroy the valvetrain if not controlled. Properly designed valve springs will control the dominant harmonics, provide the needed stability, and reduce valvetrain component wear. Ferrea valve springs are developed from high-strength alloys, including premium grade chrome silicon steel.Ferrea springs are heat-treated and stress-relieved, which dramatically increases the spring’s life. Their valve springs provide the stability needed for high-lift, high-rpm racing engines, while minimizing the load loss for today’s aggressive valvetrain combinations. ACURA RSX 2.0L (K20) (2001 - 2006) 2.0L - DOHC V-TEC 16 Valve (K20)Type/Material/Application: Dual Spring/PAC Enhanced/High Lift Drag RacingOutside Diameter: 22.86 mm/30.38 mmInside Diameter: 16.86 mm/22.86 mmSeat Pressure: 140 lbs @ 40 mmOpen Pressure: 265 lbs @ 30 mmRate Inch: 317 lbsCoil Bind: 20 mmMax Net Lift: 18.4 mmThis Spring requires either Ferrea Titanium Retainer # E11125 or Ferrea Tool Steel Retainer E20054 and Ferrea Spring Seat Locator # SL1136 (Discard OEM Spring Seat Locator.)  


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations. For international orders, please Contact Us. If you select US shipping rates and are shipping internationally, please be advised you will be contacted to compensate the difference in shipping fees.

Processing will take about 2 to 3 days before your product ships. If an item is not in stock, you will have an update as to when your item will ship within 24 hours. If you have any questions about shipping make sure to email us at or call our reps today at 732-638-5268.

If by any chance, your package that has been delivered by the carrier is lost/stolen, YOU (THE BUYER) are responsible for working with the carrier and us, Tri-State Motorsports to recover your package. You must contact us and the shipping company within 48 hours of delivery for lost/damage claims. You are covered by the basic insurance amount APPROVED by the shipping center. We DO NOT refund or reship product for claims that are denied by the shipping company.


When will my product ship out?

Due to the impact of COVID-19 and the high volume of orders, some orders may take longer than usual to process and ship. Processing takes about 2 to 3 days before your order ships. If you order an item that’s on backorder, you will automatically be refunded for that item.

Refunds are subject to a 20% restocking fee. Cancellations are subject to 10% cancellation/processing fee under no exceptions. If you have any questions about shipping make sure to email us at or call our reps today at 1 (844) 442-8118.

What's the Warranty on our products?

Unless the product is manufactured by Tri-State Motorsports or TSM Race, ALL Warranties go through the Manufacturer directly. Please visit their official website and get in contact with them in regards to your warranty. We will supply you with any invoice or tracking information the manufacturer asks you for.

How can I finance this product with Affirm?

Affirm Loan-Application Process Steps:

1. At checkout, choose Pay with Affirm

2. Affirm prompts you to enter a few pieces of information: Name, email, mobile phone number, date of birth, and the last four digits of your social security number. This information must be consistent and your own!

3. To ensure that you're the person making the purchase, Affirm sends a text message to your cell phone with a unique authorization code.

4. Enter the authorization code into the application form. Within a few seconds, Affirm notifies you of the loan amount you're approved for, the interest rate, and the number of months you have to pay off your loan. You have the option to pay off your loan over three, six, or twelve months. Affirm states the amount of your fixed, monthly payments and the total amount of interest you'll pay over the course of the loan.

5. To accept Affirm's financing offer, click Confirm Loan and you're done.

View full details