Chains are an important component in motorcycle drive trains and work with sprockets to complete the power delivery system from the motor to the rear wheels. Each chain is specifically rated, usually by displacement or tensile strength, for each motorcycle application. Choose from entry level, oem replacement or high performance racing chains such as the DID ERV3. Many chains come with a connecting link to complete installation but we usually recommend purchasing an additional connecting link...just in case. The pitch of the chain needs to match the pitch of the sprockets. For instance, a 520 chain needs 520 sprockets for installation. Gold is a popular color choice and, recently, we've started selling chains that are available in red, blue, black, green, and more! RK, EK and DID are among the top chain makers.