RCM High Performance 11mm Cylinder Head Stud Kit
£359.99
This 11mm performance head stud kit from RCM replaces the standard cylinder head bolts on Subaru EJ-series engines. Made from S99 steel with a manufacturer-stated minimum yield strength of 1080 MPa, supplied with ARP nuts, washers and RCM assembly lubricant.
SKU: RCM1635
EKS Fitment Advice
EKS currently identifies this product as Universal / Service Item
Compatibility of any product, greatly depends on model + year + trim + mods. Most Subaru’s are in different states of tune, so please contact Rich, from EKS to get clarity before purchasing.
Potential Applications
Subaru Impreza 1992-2000 (GC/GF), Subaru Impreza 2001-2002 (GD/GG Bugeye), Subaru Impreza 2003-2005 (GD/GG Blobeye), Subaru Impreza 2006-2007 (GD/GG Hawkeye), Subaru Impreza / WRX STI 2008-2013 (GR/GV), Subaru WRX STI 2014-2021 (VA/VAB), Subaru WRX 2021+ (VB), Subaru Forester 1996-2002 (SF), Subaru Forester 2003-2005 (SG early), Subaru Forester 2006-2007 (SG facelift), Subaru Forester 2008-2013 (SH), Subaru Forester 2014-2018 (SJ), Subaru Forester 2019+ (SK), Subaru BRZ 2012-2020 (ZC6), Subaru BRZ 2021+ (ZD8), Subaru Legacy 1992-2003, Subaru Legacy 2003-2009 (BL/BP), Subaru Legacy 2009-2014 (BM/BR), Subaru Legacy 2014+ / Outback related
Full List of EKS Fitment Evidence Types
For context, here are all categories of fitment according to EKS.
- Direct Fitment: means the product is currently listed as fitting the model/generation shown.
- Shared / Application Fitment: means the product may suit shared Subaru platforms, engines, turbos, drivetrains, brakes, cooling/intake setups or modified applications.
- Universal / Service Item: means the product is broadly useful for Subaru servicing, maintenance, workshop use or general ownership.
- Needs Confirmation: means the product appears relevant, but final fitment may depend on extra details.
Product Description
The RCM 11mm performance head stud kit replaces the standard cylinder head bolts, using S99 steel studs with a manufacturer-stated certified minimum yield strength of 1080 MPa. This is intended to increase clamping force on the cylinder head gaskets compared with the OE bolts, helping to reduce head movement under boost.
Supplied with ARP nuts and washers, along with an RCM assembly lubricant formulated with Graphite DJ technology to assist accurate installation torque.
Please contact Scooby Upgrades to confirm compatibility with your vehicle before ordering.

























