Yamaha XS500 Cast Wheels 1978 O-Ring Chain and Sprocket Kit

Kit contains front and rear sprockets and high quality o-ring chain.

The o-ring chain is named for the rubber o-rings built into the metal rollers of every link.

Chain manufacturers include this feature as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life.

The o-rings fit into the gap between the rollers and the links that surround each roller and hold the entire chain together.

These rubber fixtures form a barrier that holds factory applied lubricating grease inside of the rollers while still applying sufficient lubrication to the chain body.

Further, the rubber o-rings prevent dirt and other contaminants from entering the inside of the chain linkages, where such particles would otherwise cause significant wear.

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