Kmc x10 73 10 speed chain extremely durable high performance chain compatible with any 10 speed derailleur system features compatible with any 10 speed derailleur system 12 x 11128 114 links pin length 588mm non directional kmc chainsfor many years kmc has enhanced the technology behind bicycle chains through research development continuous innovation and valuable feedback from the worlds top professional racers kmcs pursuit of perfection has led to repeatedly being honoured with