CN-M8100 XT/Ultegra chain with quick link, 12-speed, 126 links Shimano 12-speed Hyperglide+ chains have computer designed plate profiles to operate seamlessly with Shimano DCE 12-speed chainrings and cassette sprockets. Sil-Tec surface treatment technology (PTFE plating) on inner and outer links and rollers that is smooth running and increases durability. This plate profile results in a 1/3 faster shift time than Hyperglide systems, even under load. Outer plate design has been developed to reduce the chance of chain suck. Comes complete with Quick Link which enables fast tool free chain assembly. For use with 12-speed HG+ drivetrains.