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

Belt drives
Belt drives are an alternative to chain drives. Early motorcycles often used leather belts, that could be tensioned to provide traction utilizing a spring-loaded pulley and hand lever. Natural leather belts often slipped, especially in wet weather, therefore they were abandoned for other materials and styles. By the 1980s, developments in materials made belt final-drive transmitting system in automobile practical again. Today’s belts are constructed with cogged rubber and operate quite similar way as steel chains. Unlike metallic chains, they don’t require lubrication or cleaning solvents.

Shaft final-drive
Shaft final-drives are occasionally used. This transmission system in automobile transmits power to the back wheel via a drive shaft. Shaft drives are well-known because they are hassle-free and don’t need as much maintenance as chain-based systems. However, shaft drives are heavier and sometimes may cause unwanted motion, known as shaft jacking, in the trunk of the motorcycle. The other components that produce a motorcycle a motorcycle are part of the chassis.
Advantages and Disadvantages
The major advantages of shaft-drive are lower maintenance and running costs, and cleanliness. Chain-drive bikes need their chains adjusting regularly and they can be expensive to replace if they wear out.
They want lubricating often, especially in bad weather, which can 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 need periodic oil changes.

The disadvantages of shaft-drive are that it’s a lot heavier than a chain and absorbs more of the engine’s power before it reaches the rear wheel

In comparison to a Chain system

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

Power Transmission

The chain drive system comprises of two sprockets, one on the gearbox and one on the trunk wheel, that are connected by a chain.
In a shaft-driven transmission program in automobile, a shaft connects a gear in the gearbox to another gear in the 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 moves forward. Either program is commonly known as “final drive,” as it is the last group of components employed to deliver power to the rear wheel.

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