2-SP Cylinder Head incl Insert YZ65 18-.. (for std)

• Comes with 2 O-Rings
• Carefully designed and tested on our in house dyno and on the track.
• Designed to achieve more mid and top end power without loosing bottom end.
• Made to fit the oem cylinderhead with high precision.
• Follow the instructions that comes with the cylinderhead insert to get the best out of your engine.

Are you looking for some extra power then this will help you achieve your goals.