36- Big Twin Riveraprimo vehicles equipped with a belt drive system with the specifications shown on the right. Front pulleys:47 or 48 pulleys, rear pulleys:76
37-84 Big Twin Liberaprimo vehicles equipped with the belt drive system with the specifications shown on the right. Front pulleys:33 or 34, Rear pulleys:49
Vehicles equipped with the belt drive system of the 65-78 Big Twin Liberaprimo with the specs shown on the right. Front pulleys:41 pulleys, Rear pulleys:61
36-84 Big Twin Rivera Primo vehicles equipped with a belt drive system with the following specifications. Front pulleys:39 rear pulleys, Rear pulleys:62, Front pulleys:40, Rear pulleys:62, Front pulleys:41, Rear pulleys:61
