Roger Clark Motorsport - Head Studs - WRX/STi EJ2.0/2.5L
The RCM 11mm Performance Head Stud Kit is highly recommended for any new or rebuilt engine producing up to or around 350bhp.
Manufactured from S99 Steel with a certified minimum yield strength of 1080 MPa our new Performance Studs offer a substantialy 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.
In the box:
12 X Set of RCM Head Studs - 11mm
12 X Heat treated nuts
12 X Heat treated washers
1 X Sachet of Moly Grease