Dura-Ace RD-R9250F Di2 Rear Derailleur - 12-Speed, Medium Cage, Includes TL-EW300, Black

The Shimano Dura-Ace RD-R9250 rear derailleur integrates the system charging port and a wireless connectivity unit all while delivering super fast, precise shifting worthy of any podium. A single cage length shifts cassettes from 11-28 to 11-34, offering exceptional versatility.

• Ultra-fast rear Di2 shifting
• Compact design includes an integrated wireless unit, charger, switch
• Wider range capacity
• Max. low sprocket: 34t
• CFRP rear derailleur plate
• LED status indicator
• Battery indicator, pairing, adjust mode etc.