Wolf Tooth Components GoatLink 11 Compatible with M8000 (XT) and M9000 (XTR) series eleven-speed Shimano rear derailleurs Direct Mount-native frames and SRAM derailleurs are not supported Double chainrings are not currently supported Optimized for using a Shimano XT 8000 or XTR 9000 Rear Derailleur with a 10-42, 10-44, 11-45, 11-46 rear cassette setup Triple chainrings are not supported