# technical specification

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

• Kits comprises of:

• X12 Extreme studs.
• X12 Heat treated nuts.
• X12 Heat treated washers.
• X1 Sachet of moly grease.
• X1 Fitting instruction guide.

# key 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 cylinder head lift under boost.

• Highly recommended for engines running up to and around 450bhp

# confirmed applications

All EJ20, EJ22 & EJ25 engines.

If you are unsure of fitment then please check your engine code or contact our sales department

# shipping

Box Dimensions

Dimensional Weight

Actual Weight

25X11X10 cm

0.5 kg

3.3 kg