The advantage of using a chain over a belt drive

It transmits more power than belt.

It has the ability to transmit motion to several shafts by one chain only.

A belt drive requires less maintenance, lasts longer and is cleaner. It also delivers a smoother ride, which is why this type of drive system is most commonly used on cruiser motorcycles. A chain drive, on the other hand, delivers power more economically than a belt drive, and it sends more of the power that the engine produces to the wheel. While they require more maintenance, the improved performance means they are the more common type of drive method.