CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (100.5mm) - Size (+1.0mm) - CR (8.2) Set of 4

CP-Carrillo offers over 500 shelf parts from the Sport Compact shelf line with a wide range of sizes for the most popular engine types. Every piston and rod is designed through extensive research and development with the support of some of the biggest names in motorsports. CP pistons are designed for oversized valves, high lift camshafts and available in a variety of compression ratios and bore sizes.