Piston and Rings for the 40mm diameter piston used in the 43-47cc engines found in most pocket bikes, gas scooters, mini-quads and other bikes that use the same style engines.

Specifications:
Piston
Diameter: 40mm
Overall Height: 41mm
Wrist Pin Diameter: 10mm
Rings
Diameter: 40mm (compressed)

Fits bikes with this 47cc engine

And fits bikes with this 43cc engine

Note: Please measure your piston diameter before placing your order.