Dura Ace Di2 RD-R9250

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The DURA-ACE RD-R9250 Di2 12-speed electronic rear derailleur integrates the system's charging port and a wireless connectivity unit, while delivering ultra-fast and precise shifting worthy of the biggest podiums. Its unique cage allows the use of cassettes from 11-30 to 11-34, offering unprecedented versatility to the world's best road groupset.

• The compact SHADOW design incorporates a wireless unit, a charger, a switch, and an LED status indicator.
  
• Extended range capability: compatible with 12 speed 11-30 and 11-34 tooth cassettes.
  
• Ultra-fast rear gear shifting, 58% faster than the RD-R9150.
  
• Integrated D-FLY connectivity.
  
• Smallest sprocket: 34 teeth.

Features