Shimano Ultegra RD-R8050 Di2 rear derailleur, 11-speed, short cage (SS)
The new Ultegra rear derailleur features Shimano’s Shadow RD design and incorporate these new cockpit functions. The electronic rear derailleur is compact and designed to protect the shifting operation in the event of a crash.
Everything you need to make your ride distinctively yours: The Shimano Ultegra Di2 11-speed Rear Derailleur RD-R8050 SS
The Di2 (RD-8050) or mechanical (RD-R8000) rear derailleur (RD) adopts the Dura-Ace low-profile Shimano Shadow RD design to sit fully under the cassette, tucked away from potential damage. The RD comes in a short cage (SS) design to cover 11-25T to 11-30T and a longer cage (GS) design to cover 11-28T to 11-34T. Both front and rear Di2 derailleurs communicate with each other to operate full or semi Synchronized Shifting mode, allowing the rider to maintain concentration on the road or the race ahead.
Features
- Ergonomic shifting operation without stress
- SHIMANO synchronized shift
- Low profile rear derailleur design
- SHIMANO SHADOW RD
- Race endurance for less damage in crush
- Maintains compact and smooth appearance
- SS Version - for Cassettes up to 30 teeth
Product features
- Use: Road
- Group: Ultegra Di2
- Model: RD-R8050-SS
- Cage: short
- Mount Type: Direct Mount
- Gear rear: 11-speed
- Compatible Chain: HG-EV 11-speed / HG-X 11-speed
- Max. teeth large sprocket: 30T
- Min. teeth large sprocket: 25T
- Max. teeth small sprocket: 14T
- Min. teeth small sprocket: 11T
- Max. Front Difference: 16T
- Total Capacity: 35T
- Compatible: EW-SD50
- Master unit: No
- Firmware update by E-tube Project: Yes
- E-tube port (pcs): 1
- E-tube connector (pcs): 0
Material
- Aluminum
- CFRP
Weight
- 242g (manufacturer information)
Scope of delivery
- 1 Ultegra Di2 11-speed Rear Derailleur RD-R8050 SS
Technology
SEIS SHIMANO ELECTRONIC INTELLIGENT SYSTEM
E-Tube
Two SHIMANO Synchronized Shift modes will be available:
- Full SHIMANO Synchronized Shift: the front derailleur reacts based on the rear derailleur’s shift action. This essentially means that, when activated, there is no need for two separate shifters to control front and rear derailleurs, the two buttons on one shifter will control both derailleurs.
- Semi SHIMANO Synchronized Shift mode: the rear derailleur reacts based on the front derailleur’s shift action, shifting to the next most appropriate rear gear when the rider makes a front shift.
Ultegra R8000
The ULTEGRA Di2 derailleur has an improved ergonomic design for better aerodynamics and compactness
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SHIMANO Synchronized Shifting - resistance in any weather conditions and fast and smooth shifting even at high torque
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Low profile derailleur - thanks to SHIMANO SHADOW RD technology, prevents frequent impacts and destruction
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Groupset | Shimano Ultegra |
Gears | 1x11, 2x11, 3x11 |
Weight | 240 g |
Technologies | Shimano Shadow RD, Synchronized Shifting, Di2 |
Cage | SS short cage |
Capacity | 30 teeth |
Material | aluminium |
product ID | 48196 |
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