Reviewing Shimano's new DEORE XT Di2 drivetrain with AUTO SHIFT automatic mode | E-MOUNTAINBIKE Magazine
Amazon.com : Shimano XTR RD-M9120 XTR 12-Speed Rear derailleur, SGS Long cage, for 10-45T/double Ring : Sports & Outdoors
First Look: Shimano Brings Electronic Di2 Tech Down to Deore XT, Adds Wireless Connectivity and 11-46 Cassette Option - Mountain Bike Feature - Vital MTB