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Create an account- Di2 E-Tube Electronic Shifting
- Sleek integrated appearance
- New low-profile design
- SHIMANO SHADOW RD
- Race endurance
- Optimized slant angle
- Wide compatibility
- RD-SS covers: 11-25T to 11-30T
- RD-GS covers: 11-28T to 11-34T
- Maintain race concentration with more intuitive shift control
- System communication with front derailleur
- SHIMANO Synchronized Shift
- Maximum Low Sprocket: 30T (SS); 34T (GS)
- Minimum Top Sprocket: 11T
- Maximum Front Tooth Difference: 16T
- Total Capacity: 35T (SS); 39T (GS)
- Weight: 242g. (SS type), 249g. (GS type)
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Review Shimano RD-R8050 Ultegra Di2 Rear Derailleur - 11 Speed