Description Provide engine for your vehicalsPerfect replacement for your old or worn one and durablitySpecification Material MetalColor As the pictures showSize Bolt Hole Diameter 6 5mmBolt Hole Spacing 79mmShaft Length 19 2mmShaft Diameter 11 2mmNumber of Splines 9Overall length 132 5mmCable Length 47 5cmPackage Size About 13 5cm L X 8 3cm W X 7 3cm H Fitment Fits for 150cc and 125cc Chinese GY6 4 stroke engines QMJ152 157 QMI152 157Fits various unlisted makes models Tank Roketa Baja Schwinn Kazuma United Motors Matrix 150 VentoNote No instructions Professional Installation is highly recommendedPlease check the size measurement chart carefully before making paymentPlease allow 0 5 1 inch difference due to manual measurement 1 inch 2 54cm The color of the actual items may slightly different from the listing images due to different computer screen thanks for your understandingPackage Included 1 X Starter Motor