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Shimano Ultegra Di2 Rear Derailleur RD-6770
The Di2 rear derailleur allows you to shift gears quickly and accurately in all conditions. The derailleur is immune to rough circumstances and protected from impact damage by its reinforced inner cage. It has a maximum capacity sprocket range up to 28T for wide-range gearing compatibility.
- Programmed automatic motion
- Electric adjustment
- Saver function protects inner structure from heavy impact
- Wide gear ratio compatible (11-28T compatible)
- Max rear sprocket: 28T
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