1 1/2"-wide, 11mm belt kits include an extra belt with every kit. For precision belt adjustment, kits for aluminum-primary Big Twins include a BDL idler that makes sure belt tension is correct (tin primary models use tranny adjustment for correct belt tension). All kits use 31-tooth engine pulleys and 47-tooth clutch pulleys. Same as Part #42588 but Specifically for Models with Factory Rear Belt Drive and Belt Drive Inner Primary |
