All gears are finish ground on diamond coated tooling after heat treating to produce a super fine surface for holding exact tolerances and eliminating gear mesh noise. Kick starter gears are heavy duty for years of service. Back-cut gear dogs with lead-in ramps on the gear pockets provide smooth shifting with positive engagement. Includes 23 tooth drive sprocket. Provision for electronic speedometer sending unit. Includes instructions and a manufacturer"s statement of origin. Note: Due to the extended length of the kick start side the rear exhaust pipe, oil tank and electric starter mounting brackets may have to be modified. Some inner primary covers require modification to clear the sprocket nut. Case clearancing may be necessary for some starter motors.