Amazon.com: SHIMANO XT Di2 RD-M8050 Rear Derailleur One Color, Medium Cage : Everything Else
First Look: Shimano Brings Electronic Di2 Tech Down to Deore XT, Adds Wireless Connectivity and 11-46 Cassette Option - Mountain Bike Feature - Vital MTB
Shimano Makes Electronic Shifting More Affordable With Deore XT Di2, Offers More Drop Bar Configurations and Bluetooth Connectivity - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media
Shimano Introduces DEORE XT Di2 with FREE SHIFT & AUTO SHIFT | IMB | Free Mountain Bike Magazine Online