The kmc xll sl dlc 11 speed chain x11sl dlc one of the lightest chains in its class the pro39s choice at 243g it39s amongst the lightest chains in its class and unlike others is coated in dlc diamond like coating to reduce abrasive wear its surface hardness is greater than most coatings and this ensures its long term functionality optical stability and higher wear resistance triple x durability also helps gives you unmatched chain life at 116 links long with great mud shedding