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.

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

KIT CONTAINS

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