World-class professional racers proved that KMC Chain provides the right DNA leading to the championship! Next to our champions, it is important to offer a chain for all kind of riders. KMC's 11 speed chains are designed to work perfectly on 11x shifting systems. We have the perfect chain for all type of riders. KMC's X11 series offers great advantages on your current 11-speed system, such as very high durability, super light weight and easy to mount connecting link.