50mm Big Bore Cylinder Rebuild For 139QMB GY6 50cc to 100cc Chinese Scooter ATV

Inner Diameter of Cylinder: 50mm
Outer Diameter of Piston Pin: 13mm
Include Cylinder,Piston,Piston Ring,Piston Pin,Piston Pin Clip,Valve Oil Seal,Gaskets,Tensioner Gasket,Exhaust Gasket,Intake&Exhaust Studs,Exhaust Nut
High Performance Upgrade 50mm Cylinder Rebuild Kit for GY6 49cc 50cc 60cc 80cc 100cc engine
Includes:
1 x GY6 100cc 50mm Cylinder Block
1 x GY6 100cc 50mm Piston
1 x GY6 100cc Piston Pin (Diameter: 13mm)
2 x GY6 100cc Piston Pin Clip
1 x GY6 100cc High Quality Piston Ring set
1 x GY6 100cc Gasket sets (Cylinder Gasket, Cylinder Head Gasket, Tensioner Gasket)
2 x GY6 100cc Valve Oil Seals
2 x GY6 100cc Intake Studs
2 x GY6 100cc Exhaust Studs & Nuts
1 x GY6 100cc Exhaust Gasket