The Shimano Ultegra Di2 RD-R8050 Rear Derailleur features a redesigned body that increases shift stability and improves the aesthetics delivering a sleek, integrated appearance.
With the new optimized slant angle of the rear derailleur, the new Di2 ensures smooth, silent, and effortless electronic shifting.
The Shimano Ultegra Di2 RD-R8050 Rear Derailleur Short Cage SS version will accept up to a 30T rear sprocket. Claimed weight: 242g (SS), 249g (GS).