The KMC X11SL is an incredibly light 11-speed chain without sacrificing durability. Hollow pins with mushroom riveting keep the weight down and strength high. Bushing-less construction and plate chamfering keep things running smoothly with crisp shifting. Double X bridge outer plates reduce chain flex especially when shifting under load. Designed for Campagnolo 11-speed drivetrains. 112 links. 233 grams. Includes KMC Missing Ling for tool free installation.