Shimano Dura-Ace Di2 Rear Derailleur RD-R9250 12-Speed

The Shimano Dura-Ace Di2 RD-R9250 is a 12-speed electronic rear derailleur for road bikes, made for riders who want top-level shifting performance. It integrates the system charging port and a wireless connectivity unit, and delivers super-fast, precise shifting worthy of any podium. A single cage length that is compatible with 28-34T low sprockets brings new versatility to the Dura-Ace road component group.

• Faster shifting: the fastest rear shifting Shimano has made, 58% faster than RD-R9150
  
• Wider range: supports a maximum low sprocket of 34T
  
• One cage length: compatible with 28-34T low sprockets
  
• Easy status checks: LED status indicator shows battery level, pairing, and adjustment mode
  
• Built-in connectivity: integrated system charging port and wireless connectivity unit

• Fastest ever rear shifting: Shifts 58% faster than the RD-R9150.
  
• Integrated charging port: The system charging port is built into the Dura-Ace Di2 rear derailleur.
  
• Wireless connectivity unit: Wireless connectivity is integrated into the derailleur.
  
• LED status indicator: Shows the battery indicator, pairing, and adjustment mode status.
  
• Wider range capacity: Supports a maximum low sprocket of 34T.
  
• Single cage length: One cage length fits 28-34T low sprockets.
  
• CFRP rear derailleur plate: The rear derailleur plate is made from carbon fiber reinforced plastic (CFRP).

• Brand: Shimano
  
• Series: Dura-Ace Di2
  
• Model: RD-R9250
  
• Product type: Rear derailleur (electronic)
  
• Speeds: 12
  
• Cage length: Single (compatible with 28-34T low sprockets)
  
• Maximum low sprocket: 34T
  
• Rear derailleur plate: CFRP