With its superior strength and durability, KMC X-SuperLight chains (X10SL & X9SL) and X series chains (X8, X9, and X10) are treated with Titanium Nitride Coating, giving our chains a sleek gold finish and superb protection against the elements. Performance is paramount to KMC Chain, which is why we have implemented our X-Bridge designs to the outer plates of the chains, producing the smoothest and quietest shifting performance.