CP Forged 99.75mm Bore / 9.0:1 Comp Pistons & Rings WRX / STI Subaru Turbo Models EJ255 / EJ257 2004-2021 Type_Exhaust Headers sold separately in packs of

sold separately in packs of 4

Part NumbeR: IS-SSH-NS13V2

Out-flows factory valves for improved throttle response

the TR TD05-20G turbo makes a excellent street and track turbo

CP Forged 99.75mm Bore / 9.0:1 Comp Pistons & Rings WRX / STI Subaru Turbo Models EJ255 / EJ257 2004-2021 Type_Exhaust Headers sold separately in packs ofPart #: SC7426 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