Chain final-drive systems are by far the most common. In this technique, a sprocket installed to the output shaft (i.e., the shaft in the tranny) is connected to a sprocket attached to the trunk wheel of the motorcycle by a steel chain. When the tranny turns the smaller front sprocket, power is transmitted along the chain to the larger rear sprocket, which in turn turns the trunk wheel. This type of transmission program in automobile must 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 frequently used leather belts, which could be tensioned to give traction using a spring-loaded pulley and hand lever. Leather-based belts often slipped, specifically in wet weather, therefore these were abandoned for various other materials and designs. By the 1980s, developments in materials made belt final-drive tranny system in automobile viable once again. Today’s belts are constructed with cogged rubber and operate much the same way as metallic chains. Unlike metal chains, they don’t need lubrication or cleaning solvents.
Shaft final-drive
Shaft final-drives are sometimes used. This transmission program in automobile transmits capacity to the rear wheel via a drive shaft. Shaft drives are popular because they are practical and don’t need as much maintenance as chain-based systems. Nevertheless, shaft drives are heavier and sometimes may cause unwanted motion, known as shaft jacking, in the rear of the motorcycle. The other components that make 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 frequently plus they can be costly to displace when they wear out.
They want lubricating often, especially in bad weather, which may be messy and inconvenient. And chain lube 
increases the running costs.
Shaft-drive systems are completely enclosed and so are unaffected by the elements and only require 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 trunk wheel
In comparison to a Chain system
A shaft-drive can also change the action of the trunk suspension – when the throttle is opened and closed quickly the bike can 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 connected by a chain.
In a shaft-driven transmission program in automobile, a shaft connects a gear in the gearbox to some other 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 system is often known as “final drive,” as it is usually the last set of components employed to provide power to the trunk wheel.
Some manufacturers, 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.