Chain final-drive systems are by far the most common. In this system, a sprocket mounted to the output shaft (i.e., the shaft in the transmitting) is connected to a sprocket mounted on the trunk wheel of the motorcycle by a steel chain. When the transmission turns the smaller front sprocket, power is usually transmitted along the chain to the bigger rear sprocket, which in turn turns the trunk wheel. This type of transmission system in automobile should be lubricated and altered, and the chain stretches and the sprockets wear, requiring periodic replacements.

Belt drives
Belt drives are an alternative solution to chain drives. Early motorcycles often used leather belts, that could be tensioned to provide traction using a spring-loaded pulley and hand lever. Leather-based belts often slipped, specifically in wet weather, therefore these were abandoned for other materials and designs. By the 1980s, improvements in components made belt final-drive transmission system in automobile viable again. Today’s belts are made from cogged rubber and operate quite similar way as metallic chains. Unlike steel chains, they don’t require lubrication or cleaning solvents.

Shaft final-drive
Shaft final-drives are sometimes used. This transmission program in automobile transmits power to the rear wheel with a drive shaft. Shaft drives are popular because they are hassle-free and don’t need as much maintenance as chain-based systems. Nevertheless, shaft drives are heavier and sometimes cause unwanted motion, known as shaft jacking, in the rear of the motorcycle. The other components that produce a motorcycle a motorcycle are part of the chassis.
Advantages and Disadvantages
The major benefits of shaft-drive are lower maintenance and running costs, and cleanliness. Chain-drive bikes require their chains adjusting regularly and they could be expensive to replace when they wear out.
They want lubricating often, especially in bad weather, which may be messy and inconvenient. And chain lube adds to the running costs.
Shaft-drive systems are completely enclosed and so are unaffected by the weather and only require periodic oil changes.

The disadvantages of shaft-drive are that it is a lot heavier when compared to a chain and absorbs more of the engine’s power before it reaches the trunk wheel

Compared to a Chain system

A shaft-drive can also change the actions of the rear suspension – when the throttle is opened and closed quickly the bike may rise and squat because the shaft is wanting to “climb” the cog on the back wheel.

Power Transmission

The chain drive system comprises of two sprockets, one on the gearbox and one on the rear wheel, that are linked by a chain.
In a shaft-driven transmission system in automobile, a shaft connects a gear inside the gearbox to another gear inside a hub on the trunk wheel.
When the engine is sparked, power is transferred along the chain or shaft to the trunk wheel, and the bike movements forward. Either program is commonly referred to as “final drive,” as it is definitely the last group of components employed to deliver power to the rear wheel.

Some manufacturers, notably Harley Davidson, have used belt drives on some of their model line-ups. BMW, Kawasaki, and Suzuki also have attempted the belt drive program.