Shimano Ultegra 8050 Di2 Medium Cage Rear Derailleur

Shimano have made continuous upgrades to the Ultegra Di2 group, the new R8050 Medium cage not only offers superb performance but more cassette ratio options. 

GS long cage derailleur has the capacity for a 11-34 cassette, increasing the gear selection available. 

The new low-profile design of Shimano Shadow RD increases its shift stability and gives the rear derailleur a sleek and integrated appearance.