KMC e12 Chain Description: The KMC e12 chain is a strong and durable chain that was designed for powerful riders, heavy loads, and eBike users. The double X-bridge shaping of the plates in addition to extensive chamfering of the edges of the plates help this chain to mesh better and more quickly to gear teeth, resulting in a much better shifting quality. Solid pins that are mushroom riveted in are rugged and hold up to aggressive shifts under heavy loads. Last but not least, these chains are non-directional and are compatible with 12 speed drivetrains from Campagnolo, Shimano, and SRAM, meaning this chain can be used on a wide range of bicycles. Features: Special high tensile strength design meant to hold up to the high torque of powerful riders, heavy loads, and eBike motors Chain is compatible with Campagnolo, Shimano, or SRAM 12-speed systems Mushroom riveted pins for the highest pin power and allows shifting under heavy loads Double "X" bridge shape allows for better meshing with gear teeth for smoother shifts and better durability Extensive chamfering of the inner and outer plates allow for more accurate shifting Heat treatment enhances the stretch resistance so the chain last longer and goes farther Specifications: Speeds: 12 Speed Links: 136 Chain Width: 5.2mm Chain Connector: Missing Link (Reusable) Pin Type: Solid Color: Silver Weight: 239