Kmc x9 light gold 9 speed chainworld class professional racers have proved that kmc chains provide the right dna to get through the championship it is important to offer a chain for all kind of riders kmcs 9 speed chains are compatible with all major shifting systems shifting performance durability and easy mounting are other key attributers of kmc chains features 12 x 11128 116 links pin length 66mm compatible with any 9 speed derailleur system titanium nitride coating hi performanc