CP Pistons Yamaha SVHO 1812cc Pistons 8.5:1 86mm - M1091

Upgrade your Yamaha SVHO-powered watercraft with the CP Pistons M1091 forged piston kit designed for 2014–2020 SVHO, FZR, and FZS 1812cc supercharged applications. Featuring an 86mm bore and an 8.5:1 compression ratio, this piston kit is engineered for high-boost reliability, controlled cylinder pressure, and durability under sustained marine load.

Manufactured from premium forged aluminum, CP Pistons deliver exceptional strength, thermal stability, and precise machining to withstand extreme heat and boost conditions common in supercharged marine engines. Ideal for stock rebuilds or high-performance SVHO builds, the M1091 piston kit provides consistent compression, improved longevity, and proven reliability for aggressive riding and high-horsepower watercraft applications.