The XTR M9100 chain for 12-speed Hyperglide+ is super narrow & lightweight yet still maintains the smoothest shifts & maximum durability Shimano have become known for. This chain has a computer designed plate profile optimized to operate seamlessly with Shimano DCE 12-speed chainrings & cassette sprockets, resulting in 1/3 faster shift time than older Hyperglide systems even under load. The Sil-Tec surface treatment technology (PTFE plating) on the Zinc-Alloy plated inner & outer links & rollers ensures smooth running & increases durability. With hollow pins for added weight savings, where every gram counts make your choice XTR.