Brand new big bore top end engine rebuild kit to fit:
Yamaha PW 50 60cc Big Bore (1981-2019).
Upgrade your cylinder from 50cc to 60cc with no modifications necessary from the standard PW50. This is the highest quality aftermarket big bore PW50 top end rebuild you can get on the market. From 40mm to 44mm diameter piston and bore.
The kit includes everything you need to completely rebuild the top end:
- Piston Kit (Piston kit includes Piston, Rings, Circlips, Small End Bearing and Gudgeon Pin.)
- Cylinder Head
- Spark Plug
- Studs and Nuts
44mm Piston diameter.