REPLACEMENT PRIMARY BELTS FOR BIG TWIN

Weight: 0.56
All replacement primary belts are fiberglass reinforced HTD type rubber belts (except 77511, 77548 & 77533 that are KEVLAR® reinforced) supplied to us straight from the manufacturer to ensure a positive fit every time. If the needed belt length is not known, determine the number of pulley teeth combination and width for the correct belt.
8mm Replacement part. 1937/1964 with open or closed primary and 1979/1984 4 speed with die cast inner primary, kick or electric start. (Bullseye belt +.020" longer than 77501). 1 1/2" wide. Pulley teeth combo 41 & 61, 39 & 62, 40 & 62.
By: BELT DRIVES LTD