Cylinder Kit for GY6 150cc Version BK074-CKIT-57B
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 & 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" 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