Ban Jing +3mm stroker crank and 1mm cylinder spacer kit for B-case (57mm stud spacing) GY6 125cc and 150cc engines. Total stroke is 60.8mm.
- Overall Length: 285mm
- Flywheel Thread Size: M12x1.25
- Flywheel Thread Length: 16mm
- Drive End Thread Size: M12x1.25
- Drive End Thread Length: 16mm
- Inner Diameter (piston pin hole): 15mm
- Number of Splines: 19
- Main bearings included
- Cylinder Spacer Inner Diameter: 65mm
- Spacer For B-case engines only (57mm cylinder stud spacing)
- All Sales on Performance Items Final