Master Link
A master link is used to connect the two ends of a motorcycle drive chain to make an endless loop (in fact, it is often called the connecting link). The master link usually consists of three components; the master link plate which has two pins fitted to it, a side plate, and a retaining clip. If the chain is an O-ring type the master link will come with four sealing O-rings. A master link should always be installed with the open end of the retaining clip facing away from the direction of the chain rotation. Failure to install the master link properly can cause failure of the chain and possible damage to the motorcycle and/or the rider.
