RCM Head Stud Kit - 11mm (EJ20, EJ22, EJ25)

The Roger Clark Motorsoprts  11mm Performance Head Stud Kit is highly recommended for any new or rebuilt engine.

Manufactured from S99 Steel with a certified minimum yield strength of 1080 MPa, RCM's new Performance Studs offer a substantially greater force on your cylinder head gaskets when compared to the O. E cylinder head bolts. With a greater pressure placed on your cylinder heads (and in turn your cylinder head gaskets) this greatly reduces the chance of head movement under boost, keeping your precious head gaskets stable and allowing them to continue providing an effective seal from cylinder chambers, oil and waterways.

**This kit is designed to meet or excede the performance of the ARP 2000 head studs. 

 

SKU
RCM1635
$265.25

 

Founded in the early 1991 by multiple RAC winner and British Rally Champion Roger Clark MBE, Roger Clark Motorsport is one of the UK's (and for that matter, global rally's) premier motorsport and product development specialists and tuners. Roger Clark Motorsport specialize in the Impreza platform (the car-of-choice for their unparalleled Time Attack Cars Gobstopper I, Gobstopper II and soon Gobstopper III), and have passed on these high-performance components to the consumer market. We are incredibly proud to be one of the only U.S. distributors able to offer these exceptional Roger Clark Motorsports parts.

The Roger Clark Motorsoprts  11mm Performance Head Stud Kit is highly recommended for any new or rebuilt engine.

Manufactured from S99 Steel with a certified minimum yield strength of 1080 MPa, RCM's new Performance Studs offer a substantially greater force on your cylinder head gaskets when compared to the O. E cylinder head bolts. With a greater pressure placed on your cylinder heads (and in turn your cylinder head gaskets) this greatly reduces the chance of head movement under boost, keeping your precious head gaskets stable and allowing them to continue providing an effective seal from cylinder chambers, oil and waterways.

All kits are supplied with RCM's own assembly lube, which utilizes Graphite DJ technology, ensuring you are able to install to the correct torque figures accurately.

This kit is designed to meet or excede the performance of the ARP 2000 head studs. 

 

Features

  • Vast improvement in clamping pressure when compared to the original cylinder head bolt
  • Increased seal pressure between the cylinder block face, head gasket and cylinder head face
  • Reduces head gasket wear
  • Reduces chance of cylinder head lift under boost
  • Highly recommended for engines running up to and around 350bhp

 

Technical Specifications

  • Cylinder head studs manufactured using Aircraft Grade S99 Steel
  • Cylinder head stud thread pitch (Block): M11X1.25
  • Cylinder head stud thread pitch (Cylinder Head): M11X1.25
  • Cylinder head stud length: 197mm

 

Included in Kit

  • X12 Performance studs
  • X12 Heat treated nuts
  • X12 Heat treated washers
  • X1 pack of Moly Grease
  • X1 Fitting Instruction Guide

 

Fitment

  • EJ20
  • EJ22 
  • EJ25

Note
If you are unsure of fitment then please check your engine code or contact Flatirons Tuning.


warning_symbolWARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to https://www.P65Warnings.ca.gov/passenger-vehicle.

More Information
SKU RCM1635
Product Type Engine
Engine Engine Internals
Brand Roger Clark
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