The chain and sprocket system is a crucial part of a motorcycle's drivetrain. It consists of a chain that connects the front and rear sprockets, transferring power from the engine to the rear wheel. Here are some general points about chains and sprockets for motorcycles:

Chain Types:
- Motorcycles typically use roller chains. There are various types, including O-ring, X-ring, and non-sealed chains. Sealed chains (O-ring and X-ring) require less maintenance as they keep the lubrication inside and prevent dirt from entering.
Sprocket Types:
- Motorcycles usually have two sprockets: the front sprocket (attached to the gearbox output shaft) and the rear sprocket (connected to the rear wheel). Sprockets can vary in the number of teeth.
- Changing the number of teeth on the sprockets can affect the bike's performance. A larger front sprocket or a smaller rear sprocket will generally increase top speed but reduce acceleration, and vice versa.
Maintenance:
- Regular chain maintenance is essential for longevity and performance. This includes cleaning, lubricating, and adjusting the chain tension.
Replacement:
- Chains and sprockets wear over time and need replacement. A worn-out chain can cause poor performance and damage the sprockets. It's recommended to replace the entire set (front and rear sprockets along with the chain) for optimal performance.

DUKE/RC 390 CHAIN AND SPROCKET