CP Piston & Ring 100mm Bore 8:2 CR WRX / STI Subaru Turbo EJ255 / EJ257 Models 2004-2021 Forester_1998-2002 The Ksport system uses a

The Ksport system uses a Monotube design in which the oil and gas are separated within the cylinder

by our friends at Invidia

utilizing the latest forging techniques and CNC machinery and backing it up with rigorous quality control makes for a top-notch product every time that emphasizes performance and reliability

2011-2014 Subaru WRX

The Exedy Stage 2 Cerametallic Clutch Kit has been designed to handle the increased power of bolt-on modifications

CP Piston & Ring 100mm Bore 8:2 CR WRX / STI Subaru Turbo EJ255 / EJ257 Models 2004-2021 Forester_1998-2002 The Ksport system uses aPart #: SC7421 CP WRX and STI forged pistons feature superb ring seal, higher vacuum, lower blow by, greater durability and increased horsepower and torque through the power band. Better yet, peak horsepower is retained through the life of the piston rings. This is achieved by lightweight forgings and CP's exclusive machining techniques and processes. CP's commitment to racing is reflected in every piston they produce. CP is dedicated to superior