Cylinder Kit 57mm for 150cc Engine Version B

Chinese 57mm Cylinder Kit Version B.

This Chinese 57mm cylinder kit is the replacement part for many 4-stroke Chinese atvs, dirt bikes, go-karts and scooters. Cylinder kits ship complete with cylinder, 57mm piston, piston rings, piston pin, piston clips, and top end gasket set.  This kit fits 150cc models.  

There are 2 versions of the GY6 150cc engine.  This kit is for version B engine.  PLEASE check measurements and specs BEFORE you order.  Gaskets and fins on jug are also a help in determining the version you have. DOES NOT fit Kazuma 150cc original head exact - off by 1/16 inch, so gaskets do not line up exact on the Kazuma GY6 150cc engine.

 The A engine has 54mm spacing, center-to-center, on the cylinder head stud holes.   The B  engine has 57mm spacing on the cylinder head stud holes.

Cylinder kit description:

• Includes cylinder body (bore 57mm)
• Overall height excluding cylinder lip:  69mm
• Head/Base gaskets NOT included
• Piston kit 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
• Compatible with 150cc 4 stroke