Shimano 11v Di2 SS RD-R8050 Ultegra Rear Derailleur, Improved thanks to the SHIMANO SHADOW RD design, the SHIMANO ULTEGRA 8000 shifter has a slender appearance and offers optimized shifting performance. The RD-8050 DI2 versions offer the digital precision of the SHIMANO electronic transmission and synchronized transmission.

• Shimano color: Series color.
• Sales model code: RD-R8050.
• Shimano article number: Gearbox.
• Cycling discipline: Road.
• Use: By bike.
• Maximum sprocket teeth: 14T.
• Total capacity: 30T.
• Number of rear gears: 11.
• SGS GS SS cage.
• Short cage.
• Minimum sprocket teeth 25T.
• System type: DI2.