54001 1084 starter ring gears conversion kit

This Compu-Fire 1084 starter ring gear conversion kit is a proven way to increase your starting torque by 15% without replacing the entire starter motor. By swapping the stock 66-tooth ring gear for this 84-tooth version and using the included 10-tooth pinion gear, you change the drive ratio to make engine turnover much easier. This is especially helpful on older Big Twins with increased displacement or higher compression. The kit comes complete with the 84-tooth ring gear, 10-tooth pinion, and all necessary installation hardware. It is designed specifically for 1990 to 1993 Big Twin models. It is a cost-effective mechanical upgrade that takes the strain off your electrical system and ensures more reliable starts every time you hit the button.