KMC X-12 DLC Chain 126 Links RedThe KMC X-12 DLC Chain have a titanium-carbon-nitrade coating to give it an extremely hard surface and therefore reduced friction. The result is extra smooth running with optimum shifting behavior. Due to the extreme hardness of the pins, an above-average service life of the entire drive. Compatible with 12 speed Shimano, Sram Eagle, Sram Eagle AXS, and Campagnolo setups. Not compatible with Sram eTAP and Flattop. The Double-X Bridge construction increases efficient shift precision and shifting speed. The Inner and Outer Chamfering increases engagement with chainrings to further increase shifting abilities. The KMC Shield Tech E-Riveting is a patented new riveting tech that utilizes a reinforced pin design with 10% greater pin surface area and significantly increased pin power of 25%. Comes with 126 Links and weighs 238g. Available in Yellow, Blue, and Red.766759712211