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 MRU:

The MRU chain has been developed for low-power motorcycles that are OEM equipped with a non-sealed standard chain.

- U-ring chain

- Loss of lubricant is avoided

- Ultra thin sealing ring

- Extremely narrow width

- Up to 100% longer life compared to unsealed standard chains