KMC chains are very slim designs. In addition to a lower weight, this design convinces by very quiet running and less chain suck. The 10-speed chains are only 6 mm wide, of the narrowest in its class, and forgive also times when the rear derailleur is not 100% precisely adjusted. KMC’s X10-series is 100% compatible with all 10-speed derailleur systems and gives exceptional performance even to the most demanding riders.

11-speed systems are widely established among road and MTB racers. KMC’s X11 chains offer the best shifting performance, easy and safe assembly with missing link CL555R, outstanding durability, and lightweight. KMC X11 series offers great advantages on your Shimano, SRAM, or Campagnolo 11-speed system.