SSP-G +3.0mm stroker crank for GY6 engines. Total stroke is 60.8mm. Can be used with A-Case or B-Case engines. Approximate displacement with big bore cylinder kits is as follows:

58.5mm cylinder: 163cc

61mm cylinder: 178cc

63mm cylinder: 189cc

67mm cylinder: 214cc

• 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