Add some glamour to your bike with KMC's Aurora chain! Perfect shifting and dynamic propulsion with the X-bridge technology with this pro level 12 speed chain. With a slim and lightweight design, this chain is compatible with all 12-speed derailleurs, offers a quiet ride and is one of the most durable on the market. The Non-Directional design makes it independent of direction which allows maximum compatibility on MTB or Race bikes. With its unique stretch-proof treatment, the durability has been enhanced massively by reducing the attrition between the inner plates and pin. As a result, chain life has been significantly prolonged. The upper bridge forms a slant vault parallel to the tip of tooth movement. This vault shape makes the tooth and chain engage much more precisely. X-Bridge The KMC X-Series has been designed with the specific characteristics of the Shimano, SRAM and Campagnolo systems in mind and will meet the most demanding requirements. Elaborately designed and manufactured, the X-Bridge technology, thanks to precisely chamfered plates, allows smooth propulsion and perfect gear changes in all driving situations. Nickel Plate Nickel is an alloying metal that is mainly used for steel refinement. It makes steel resistant to corrosion, increases its hardness and toughness and is very effective as a rust protection. Please note: Due to the colouring process for the Aurora chains, the colour may not be a perfect match to the image shown.