Chain final-drive systems are the most common. In this system, a sprocket mounted to the result shaft (i.e., the shaft in the transmitting) is linked to a sprocket attached to the rear wheel of the motorcycle by a metallic chain. When the transmitting turns the smaller front side sprocket, power is certainly transmitted along the chain to the bigger rear sprocket, which in turn turns the rear wheel. This kind of transmission program in automobile should be lubricated and adjusted, 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, which could be tensioned to give traction using a spring-loaded pulley and hand lever. Leather-based belts often slipped, specifically 
in wet weather, so these were abandoned for other materials and designs. By the 1980s, developments in components made belt final-drive tranny system in automobile viable again. Today’s belts are made from 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 sometimes used. This transmission system in automobile transmits power to the rear wheel with a drive shaft. Shaft drives are well-known because they are convenient and don’t need as much maintenance as chain-based systems. Nevertheless, shaft drives are heavier and sometimes may cause unwanted motion, called shaft jacking, in the rear of the motorcycle. The other components that make a motorcycle a motorcycle are area of the chassis.
Advantages and Disadvantages
The major advantages of shaft-drive are lower maintenance and running costs, and cleanliness. Chain-drive bikes require their chains adjusting regularly and they can be expensive to displace when they wear out.
They need lubricating often, especially in bad weather, which can be messy and inconvenient. And chain lube adds to the running costs.
Shaft-drive systems are fully enclosed and so are unaffected by the elements and only need periodic oil changes.
The disadvantages of shaft-drive are that it’s a lot heavier when compared to 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 rear suspension – when the throttle is opened and closed quickly the bike may rise and squat because the shaft is trying 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 within 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 rear wheel, and the bike techniques forward. Either system is often referred to as “final drive,” since 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 also have attempted the belt drive program.
