Wiseco K20 Turbo Pistons Select Part Number:86mm - 9.5:1 - K631M86 This is a replacement long

This is a replacement long block only

BMF camshafts are designed to optimize top-end horsepower and torque

PAC Enhanced valve springs are made in the USA and have gone through anti-fatigue processes for longer life and better valve control than the competition

Optional Steel Rod for endurance racing

Wiseco K20 Turbo Pistons Select Part Number:86mm - 9.5:1 - K631M86 This is a replacement longWiseco brings over 60 years of experience to the import world. These years include developing pistons in Formula 1, Indy Racing League, and NHRA Pro Stock. This racing technology allows Wiseco to bring the latest innovations in piston technology to the Sport Compact market. Valve pocket designs maximizes flow around valves Oversize valves and high lift camshafts can be utilized. Pistons crown shapes designed to promote maximum intake charge efficiency