WSM Piston Kit - Yamaha - +1 mm 50-520-07PK Replacement Boot Buckle and Screw Set TorqDrive friction disk technology coupled

TorqDrive friction disk technology coupled with EXP and Core technology results in significant advancement in auto performance with exceptional hook-up

A removable spark arrestor will come equipped

GAS GAS MC450F 2021-2022

Finger bridge prevents excessive finger roll and separation during impacts

The improved ride ability in all environments is evident when using this setup

WSM Piston Kit - Yamaha - +1 mm 50-520-07PK Replacement Boot Buckle and Screw Set TorqDrive friction disk technology coupledQuality 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