inlinePRO K20C1 K20C4 K20C6 K20C8 (M12) XD Head Stud Set (upgrade from M11) - Civic Type R, Accord 2.0T, Integra Type S, RDX 2.0T, TLX 2.0T
No
$349.95
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Inline Performance
inlinePRO K20C1 K20C4 K20C6 K20C8 (M12) XD Head Stud Set (upgrade from M11) - Civic Type R, Accord 2.0T, Integra Type S, RDX 2.0T, TLX 2.0T
IP-HS-M12K20C1
$349.95
Options & pricing
M11 To M12 Transition Tap
Yes
+$129.95
Lowest added cost, on top of the base price of $349.95.
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Fitment help
Description
Our Honda K20C1 K20C4 K20C6 K20C8 M-series M12 Xtreme Duty head studs are made from the Highest Grade Premium American Alloy that have gone through rigorous heat treatment and testing. With a minimum tensile strength of 230kpsi, these are not prone to hydrogen embrittlement like the L19/H11 material and can be handled without worrying about failures. We use a True-beam design all the way through the length of the stud resulting in better clamping force and torque values (it's not necked-down or undercut like others). "Only settle for the Best!"
The kit includes: Studs, nuts, washers, lube, and instructions.
- Engine block must be re-threaded to accept the larger M12 stud using our custom M11 to M12 transition tap kit (sold separately).
- No modification is necessary to the cylinder head (use with stock OEM dowel pins).
Fits the Honda Acura K20C1 K20C4 K20C6 K20C8 2.0 Turbo engines:
- 2017+ Honda Civic Type R (K20C1)
- 2018-2022 Honda Accord 2.0T (K20C4)
- 2024+ Acura Integra Type S (K20C8)
- 2019+ Acura RDX (K20C4)
- 2021+ TLX Base 2.0T (K20C6)
Specifications
| SKU | IP-HS-M12K20C1 |
|---|---|
| Category | Head Studs & Main studs |
| Brand | Inline Performance |
Fitment
This part is listed for the engine families below. If your build is unusual — a swap, a stroker, an aftermarket head — send us the combination and we will confirm fitment before you order.
Shipping & Returns
Orders ship within the United States from our shop in Springfield, Virginia. Weight-based rates are calculated at checkout.
Shipping outside the US? We do not take international orders through the website — call 703-455-5805 or email info@inlinepro.com and we will arrange the order and payment with you directly.
Returns must be approved before shipping, made within 30 days in original condition, and are subject to a 25% restocking fee. No returns on used parts, electronics or special orders.