Fit into existing 5-speed cases; lower the rpm at cruising speeds
Include a 6-speed gear set (3.24:1 1st gear/.86:1 6th gear), 28-tooth motor sprocket, longer primary chain, fixed spindle-shift drum and anti-overshift ratchet shift pawl assembly
All gears are full-width Baker ground gears; 4th, 5th and 6th gears are helical for silent operation
Include easy-to-follow instructions
Replacement primary shoe available separately; designed for use with tensioner bracket OEM #39990-01