150cc GY6B Cylinder & Piston Rebuild Kit [57mm Stud Spacing]

This 150cc cylinder and piston rebuild kit fits most GY6-B models with the 57mm stud spacing. 

Bore diameter is 57mm.

• Includes cylinder body [bore 57mm]
• Cylinder body height: 69mm (not including skirt)
• Piston also included
• Piston Height: 38.5mm
• Piston Diameter: 57mm
• Piston Pin Length: 41.5mm
• Piston Pin Diameter: 15mm
• Bottom hole distance: 63mm
• Center hole distance: 57mm
• Top hole distance: 55mm
• Distance hole to hole across piston area: 78mm