K-Tuned - 8th Gen Civic Si Header  Polished 304 Stainless Steel
K-Tuned - 8th Gen Civic Si Header  Polished 304 Stainless Steel
K-Tuned - 8th Gen Civic Si Header  Polished 304 Stainless Steel
K-Tuned - 8th Gen Civic Si Header  Polished 304 Stainless Steel
K-Tuned - 8th Gen Civic Si Header  Polished 304 Stainless Steel
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K-Tuned - 8th Gen Civic Si Header Polished 304 Stainless Steel

KBH-CSI-K20
Headers
$499.99

Applications: 
  • 06-11 Civic SI models both Coupe and Sedan
Note:
*It is highly recommended to upgrade your rear engine mount to a Hasport rear mount to limit movement.
*Donut gasket can be replaced by OEM Honda part (18229-PCX-003), you will have to reuse the metal ring.

Features: 
- Fits Civic Si with K20Z3 engine. 
- 4-2-1 Tri-Y Design 
- 304 Stainless Steel 
- CNC cut 3/8" thick SS Flanges 
- 2.5" Outlet

K-Tuned 8th Gen Header

The K-Tuned 8th Gen Civic SI Header was specifically designed to optimize the performance and power output of the K20Z3 engine that is found in all 2 and 4 door SI models. The header was developed using a proven 4-2-1 Tri-Y design that delivers power gains almost everywhere in the power band, not just the higher rpm range. Additional performance is accomplished by using large diameter piping to speed up the flow of exiting exhaust gases. We also use stepped piping and smooth transitions that minimize restriction. Fitment past the subframe and sway bar is perfect with extra clearance available for engine movement.

We start with 44mm primaries that smoothly step into 50mm secondaries and finish with a 64mm or 2.5î exit. Like all our stainless headers, it is assembled using mandrel bent, 304 stainless steel tubing and is fully tig welded. We also use a slightly thicker gauge tubing that allows for better weld penetration and additional strength. The CNC cut 3/8" thick flanges are also double welded and then ported for optimum flow at entry and exit. This header directly replaces the OEM 2 piece design and eliminates the catalytic converter so we included a short 2.5" test-pipe with defouler for the secondary O2 sensor.
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Returns Policy

Our return policy varies between products on whether you can return it or not. We do stand by the policy that ALL POSSIBLE returned products will be charged with a 20% Restocking Fee. NO FULL REFUNDS. If you have any questions about returning your items please contact our reps at 732-638-5268 or email returns@onlinetsm.com

Shipping

We stand by our policy of same day shipping on all in stock items if purchased before 4:30 PM (Eastern-Time). If an item is not in stock, you will have an update as to when your item will ship within 24 hours. Below is a map locating where we do our one day shipping to. If you have any questions about shipping make sure to call our reps today at 732-638-5268.

Lost/Stolen Package

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

NOTE: Once the products have been shipped, the order CAN NOT be canceled.

Main Shipping Carrier: UPS

Does this product fit my Vehicle?

Please read the 'Description' tab carefully. We try our best to put vehicle fitment information on all of our products description. If by any chance your vehicle is not listed and you have a question, feel free to ask one of our experts at 1 (844) - 442-8118 . Please have the product SKU ready.

When will this product ship out?

If the product is in-stock and the order is placed before our shipping cut-off time (4:30PM Eastern-Time), your product will ship the same day. If the product is not in stock, you will have an update as to when your item will ship within 24 hours. Click on the 'Shipping & Returns' tab to view the map locating where we do our one day shipping to. If you have any questions about shipping make sure to call our reps today at 1 (844) - 442-8118.

What's the Warranty on this product?

Unless the product is manufactured by Tri-State Motorsports or TSM Race, ALL Warranties go through the Manufacture 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 manufacture 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 autorization 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.

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