RK is a leading manufacturer of drive chains for motorcycles in Japan. For more than 40 years, RK has been supplying all well-known Japanese motorcycle manufacturers as original equipment. Also in racing, RK is the first choice of many teams in MotoGP, Motocross or also in the Paris-Dakar Rally.
The RK XSO is an improved form of O-ring chain. Due to the special shape of the X-rings, the chain is sealed at four sealing points, the lubricant cannot escape.
The X-ring also serves as an additional lubricant reservoir. The service life of the chain is extended by about 30%.
Four sealing points
Lubricant cannot escape
Service life is extended by 30% compared to an O-ring chain