CP Piston & Ring Set Bore 100mm Size +0.5mm CR 10:1 WRX / STI Subaru EJ25 Turbo Models 2004-2021 vendor_Centric 100% digital wideband air/fuel ratio

100% digital wideband air/fuel ratio monitoring

Designed for high-RPM valvetrain stability

Our exclusive hex cap Double Adjuster is comprised of electroless nickel plated 4130 Chromoly along with 6061-T6 Aluminum clamps to reduce weight and prohibit corrosion

hoods and painted surfaces and offers a very cool looking carbon fiber look

Lightweight design

CP Piston & Ring Set Bore 100mm Size +0.5mm CR 10:1 WRX / STI Subaru EJ25 Turbo Models 2004-2021 vendor_Centric 100% digital wideband air/fuel ratioPart #: SC7417 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