Belt width and pulley width must match in every respect for proper function. Width match is important because there should be full contact (traction) between the belt and pulley. 0:00 / 0:00 ...

Applying a V-belt drive in a low-speed, high-torque application: Roller chain and synchronous belt drives, rather than V-belts, are recommended for low-speed, high-torque applications.

V-twin engines are generally narrower than parallel-twin engines, as they are mounted transversely. As this keeps one cylinder behind the other, the overall engine, and thus the whole motorcycle ...