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 at the Paris-Dakar Rally. RK 530UWV: The UWV chain was developed as an alternative to Classic / Vintage bikes, which are OEM equipped with a non-sealed standard chain. By using new UW rings, this chain has an extremely narrow width and now also allows the use of a sealed chain. - UW ring chain - Loss of lubricant is avoided - Reduction of wear due to friction by up to 70% compared to O-ring chains - Ultra thin sealing ring - Extremely narrow width - Up to 4x longer life compared to unsealed standard chains