Motorcycle sprockets are usually made from steel (longer lasting) or aluminum (lighter). The sprockets need minimal cleaning and lubrication and usually wear ou

Motorcycle sprockets are usually made from steel (longer lasting) or aluminum (lighter). The sprockets need minimal cleaning and lubrication and usually wear out at the same time or after the chain, in my experience. The chain and sprockets are replaced as a set, as using a new chain on a worn sprocket can accelerate wear.