The kmc x9 73 9 speed chain a 9 speed chain that is compatible withshimano sram and campagnolo 9 speed systems features include their xsp treatment x bridge and the bulls eye pin a unique kmc riveting system that provides unsurpassed side plate retention kmc x9 73 9 speed chain features x sp treatment this treatment of pins and plates reduces wear susceptibility caused by the ingress of sand or other debris into the chain bearings hugely enhancing durability pins and