CP Pistons Yamaha YFZ450R 12.75:1 Pistons 98mm +3mm OS - M1009

Upgrade your Yamaha YFZ450 or YFZ450R with the CP Pistons M1009 forged piston kit designed for 2004–2020 applications. Featuring a 98mm +3mm oversized bore and a 12.75:1 compression ratio, this piston kit is ideal for rebuilt or bored engines requiring increased displacement, improved throttle response, and stronger mid-to-top end power.

Forged from premium aluminum alloy, CP Pistons deliver exceptional strength, precise machining, and thermal stability under high RPM and aggressive riding conditions. Ideal for performance trail riding, dunes, or race-oriented builds, the M1009 piston kit provides consistent compression, long-term durability, and the trusted reliability CP Pistons is known for in Yamaha ATV performance engines.