RK is the leading manufacturer of motorbike drive chains in Japan. For more than 40 years, RK supplies all well-known Japanese motorcycle manufacturers as original equipment. Also in racing RK is the first choice of many teams in the MotoGP, in motocross or even at the Paris-Dakar Rally. RK ZXW: The ZXW chain is a further development of the GXW series to meet the needs of PS-strong street motorcycles of the latest generation and is characterized by an extremely high tensile strength. The special shape of the XW rings seals the chain at six sealing points, avoiding the loss of lubricant under all conditions - extending the service life by up to 50% compared to an O-ring chain. - XW ring chain - Six sealing points, two stabilizers prevent twisting of the rings - Loss of lubricant is avoided - 50% longer life than O-ring chain - extremely high tensile strength