Description:

Inner Diameter of the Cylinder: is 47mm, Outer Diameter of the Piston Pin: is 13mm. Include Cylinder, Piston, Piston Ring, Piston Pin, Piston Pin Clip, Valve Oil Seal, Gaskets, Tensioner Gasket, Exhaust Gasket, Intake&Exhaust Studs, and Exhaust Nut. Easy installation. High-Performance Upgrade 47mm Cylinder Rebuild Kit for GY6 49cc 50cc 60cc 80cc engine.