1 1/2" 11mm Bolt-On Belt Drive Kit for Harley-Davidson

For precise belt adjustment, aluminum Big Twin kits include a BDL idler pulley to ensure proper belt tension (primary Twin models use the drive adjustment for proper belt tension).
All kits use 31 tooth engine pulleys and 47 tooth clutch pulleys.
1 1/2" 99 tooth belt
36-52 Flathead, 36-47 Knucklehead, 48-54 Panhead
Note: Only for models with kick start.