CP RB25DET Pistons STD Bore 8.5:1 SC7307

Please note we do not recommend a standard bore piston with anything other than a new block that has been measured and confirmed it will take a standard bore piston.  Any standard bore pistons that are special ordered in will be non-returnable so recommend double checking with your engine builder first.

CP offers over 140 shelf part pistons from the Sport Compact shelf line with a wide range of bore sizes and compression ratios for the most popular engines. Each of these pistons was designed through extensive research and development with the cooperation of some of the biggest names in motorsports.

These pistons are already designed for oversized valves and high lift camshafts.

All of our pistons represent the highest quality and are engineered for maximum power. Pistons come with Rings, pins, and locks.


In most cases, these are a direct replacement for your stock pistons.

CP pistons have been regarded as "the worst kept secret in motorsport" - and for good reason.

Features include:

Forged from high strength 2618 Alloy
Super lightweight designs
Fully CNC machined and balanced to within 1 gram
Wrist pins included at no extra cost
Double pin oilers, force fed from oil ring
Pick lock grooves for easy lock removal
Huge range of sizes and applications for most imports