WSM Piston Kit - Polaris - +.50 mm 50-300-05PK Linear T-Shirt 2019-2022 Yamaha YZ 250 F

2019-2022 Yamaha YZ 250 F - - 2019-2022 Yamaha YZ 450 FX - - 2018-2022 Yamaha YZ 450 F

thumb and fourchettes for comfort and durability

Effective temperature range: 14 ~ 140 °F

Built-in can coozie in the adjustable drawcord

Front metallic TPU patch and embroidered side logo

WSM Piston Kit - Polaris - +.50 mm 50-300-05PK Linear T-Shirt 2019-2022 Yamaha YZ 250 FQuality and construction that meets or exceeds OEM Feature improved E clip design Contain piston, rings, pin and clips Additional rings available separately Order one per cylinder Skirts have a nonabrasive, expansion retarding MOS2 coating to reduce heat and friction for added power and longevity MOS2 coating actually draws heat through piston walls and out the bottom Specially hardened tops add strength to ring grooves