QMB139 Clutch Set 50cc
107mm Clutch without clutchbell for 50cc 4-stroke GY6 50cc QMB139 engines complete, pre-assembled clutch unit consisting of a rear converter torque driver, torque spring, clutch housing and clutch shoes. A defective clutch unit is the most common cause of cracked belts and makes often advance by humming while driving or judder when starting.This part removed the complicated and trick mounting of the torque spring.

Supplied as shown.