World-class professional racers proved that KMC Chain gives 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 multiple speed chains are compatible with all major shifting systems. Shifting performance, durability and easy mounting are other key words for KMC Chain. We have the perfect chain for all type of riders.There are still many among us who are perfectly satisfied with their 8-speed derailleur system.X8 is the best choice if you value smoothness, shifting performance and durability.Bulls-Eye pin: The unique KMC bulls-eye pin riveting gives unsurpassed side plate retention.X-SP treatment: KMC's extreme stretch-proof treatment of pins and plates makes this chain less susceptible to wear caused by sand or other exterior material invading into the chain bearings. Drastically enhancing durability.High alloy material: Pins and plates, made out of special alloy material, reduces chain stretching and thus prolo