Shimano M8050 XT Di2 Rear Derailleur GS Medium Cage RDM8050GS

##Shimano M8050 XT Di2 Rear Derailleur GS Medium Cage Shift effortlessly with power and accuracy thanks to the Shimano M8050 XT Rear Derailleur, available here in the GS Medium Cage edition. Whether you run a one-by or double chainset, this premium electronic rear derailleur is sure to satisfy even the most discerning mountain biker. When used with a compatible Shimano Di2 XT shifter (sold separately), the gear changes are instant, powerful and superbly accurate. Shimano's Synchroshift system allows for programmable simultaneous shifts with the front derailleur (sold separately), enabling single lever operation for maximum efficiency. Shimano's Shadow Plus technology keeps the mech up and out of harm's way, so you can forge a path down the toughest trails with confidence in the safety of your rear derailleur.