KMC makes chains for all aspects of cycling that are known for reliability, smooth shifting performance, and quick installation via the Missing Link system. With the visually-stunning X12-TI Nitride Gold Chain they've made their foray into the realm of 12-speed to accommodate the growing market of wide range mountain bike drivetrains. This chain is alluring, there's no doubt about that, but it's not just about looks. The Ti-Nitride gold coating actually reduces friction and improves durability by shedding mud, water, and grit more easily due to its mildy hydrophobic nature, while also yielding corrosion-resistant properties.As for the construction itself, KMC employs a double X-bridge shape with inner and outer plate chamfering to deliver smooth and fast shifting across the entire cassette. The plates are held together by mushroom riveted pins that maximize pin strength and allow precise shifting under heavy loads. The chain is compatible with SRAM 12-speed mountain drivetrains and is non-directional, so you don't have to worry about which direction the chain or master link is facing during installation.