This 49cc/44mm diameter ported piston is used to up grade your stock piston found in most pocket bikes, gas scooters, mini-quads and other bikes that use the same style engine.

Note: Wrist pins on 44mm/49cc pistons come in two sizes 10mm or 12mm. Please measure your piston and wrist pin before purchasing. 

Fits bikes with this 47-49cc engine