Piston Diameter: 40mm
Wrist Pin Diameter: 10mm
These engines are available with two different cranks, this one has a 10mm wrist pin, the other one uses a 12mm pin, Make sure you get the correct one
This kit includes: 50cc cylinder, gaskets, clips, wrist pin, piston and rings
Fits: 1E40QMB 1PE40QMB 2 Stroke Engine
Fits on Apirilia Vino, JOG CV ,Polaris, ZUMA & many more!