Seller notes

50mm Cylinder Kits for GY6 49CC 50CC 139QMB Engine, Upgrade GY6 100cc Big Bore Rebuilt Cylinder Kits 4 Stroke Motor for Moped Scooter ATV Go Kart. 1.Inner Diameter of Cylinder bore: 50mm, Outer Diameter of Piston Pin: 13mm2.Outer Diameter of Piston: 50mm3.Easy installation, Upgrade your engine from 50cc to 100cc with more power to climb hill4.Include Cylinder,Piston,Piston Ring,Piston Pin,Piston Pin Clip,Valve Oil Seal,Gaskets,Tensioner Gasket,Exhaust Gasket,Intake&Exhaust Studs,Exhaust Nut (Ite...

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