TheKMC 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 plates, made out of special high quality alloy are less prone to stretching. Chain life is prolonged X-Bridge:This is on the outer plate, configured with precisely articulated angles for quicker and smoother gear shifting and quieter riding ... More info
