RK is the leading manufacturer of drive chains for motorcycles in Japan. For more than 40 years RK supplies all major Japanese motorcycle manufacturers as original equipment. Also in racing RC is the first choice of many teams in MotoGP, Motocross or even at the Paris-Dakar Rally. RK ZXW: The ZXW chain is a development of the GXW series to meet the needs of high-powered street bikes of the latest generation to meet and is characterized by an extremely high tensile strength. The special shape of the XW-rings, the chain is sealed at six sealing points, so the loss of lubricant is avoided under all conditions - the life is prolonged by up to 50% compared with an O-ring chain. - XW-ring chain - Six sealing points, two stabilizers prevent rotation of the rings - Loss of lubricant is avoided - 50% longer life than O-ring chain - Extremely high tensile strength