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 linked to a sprocket attached to the rear wheel of the motorcycle by a metal chain. When the transmitting turns the smaller front sprocket, power is transmitted along the chain to the larger rear sprocket, which then turns the trunk wheel. This type of transmission program in automobile must be lubricated and altered, 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, specifically in wet weather, therefore these were abandoned for other materials and designs. By the 1980s, advancements in components made belt final-drive transmission system in automobile practical again. Today’s belts are made from 
cogged rubber and operate much the same way as metal chains. Unlike steel chains, they don’t need lubrication or cleaning solvents.
Shaft final-drive
Shaft final-drives are occasionally used. This transmission system in automobile transmits capacity to the back wheel via a drive shaft. Shaft drives are well-known because they are convenient and don’t require as much maintenance as chain-based systems. However, shaft drives are heavier and sometimes cause unwanted motion, called shaft jacking, in the trunk of the motorcycle. The other components that make 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 need their chains adjusting frequently and they can be costly to replace if they wear out.
They need lubricating often, especially in bad weather, which can 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
Compared 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 may rise and squat since the shaft is wanting to “climb” the cog on the back wheel.
Power Transmission
The chain drive system is made up of two sprockets, one on the gearbox and one on the rear wheel, that are linked 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 referred to as “final drive,” since it is usually the last group of components employed to deliver power to the rear wheel.
Some producers, notably Harley Davidson, have used belt drives on a few of their model line-ups. BMW, Kawasaki, and Leaf Chain Suzuki also have attempted the belt drive program.