Chain final-drive systems are the most common. In this technique, a sprocket installed to the output shaft (i.e., the shaft in the transmission) is connected to a sprocket mounted on the trunk wheel of the motorcycle by a metallic 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 rear wheel. This type of transmission program in automobile should be lubricated and adjusted, and the chain stretches and the sprockets use, 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. Natural leather belts often slipped, especially in wet weather, therefore these were abandoned for additional materials and agricultural Chain styles. By the 1980s, advances in materials made belt final-drive tranny system in automobile viable once again. Today’s belts are made of cogged rubber and operate quite similar way as metallic chains. Unlike metallic chains, they don’t need lubrication or cleaning solvents.
Shaft final-drive
Shaft final-drives are sometimes used. This transmission system in automobile transmits capacity to the rear wheel with a drive shaft. Shaft drives are popular because they are convenient 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 trunk of the motorcycle. The various other components that produce a motorcycle a motorcycle are section of the chassis.
Advantages and Disadvantages
The major benefits of shaft-drive are lower maintenance and running costs, and cleanliness. Chain-drive bikes need their chains adjusting regularly and they could be costly to replace when they wear out.
They need lubricating often, specifically in bad weather, which can be messy and inconvenient. And chain lube adds to the running costs.
Shaft-drive systems are fully enclosed and are unaffected by the elements 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 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 trunk wheel.
Power Transmission
The chain drive system is made up of two sprockets, one on the gearbox and one on the trunk wheel, that are connected 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 rear wheel.
When the engine is sparked, power is transferred along the chain or shaft to the trunk wheel, and the bike techniques forward. Either program is commonly 
known as “final drive,” since it is usually the last set of components employed to deliver power to the trunk 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.