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 wrist pins, pin fitted, and locks (except for Subaru).