Cylinder Kit 40.5mm for 50cc Yamaha PW50 Engine 133764 Drive face center hole: 19

Drive face center hole: 19 teeth (spline shaft)

110cc and 150cc models

This replacement seat is used on several brands of full size atvs

Rear clutch for 70-125cc engine

Cylinder Kit 40.5mm for 50cc Yamaha PW50 Engine 133764 Drive face center hole: 19Chinese 40. 5mm Cylinder Kit for 50cc Yamaha PW50 Engine. This Chinese 40. 5mm cylinder kit is the replacement part for the Yamaha PW50 dirt bike. Cylinder kits ship complete with cylinder, 40. 5mm piston, piston rings, piston pin, piston clips, and top end gasket set. This kit fits the Yamaha PW50 50cc models. Cylinder kit description: Top end gasket set included [as pictured] Piston kit also included [as pictured] Piston Height: 50mm approx. Piston