Dura-Ace RD-R9250F Di2 Rear Derailleur - 12-Speed, Medium Cage, Includes TL-EW300, Black spring kit Ultra-stiff cluster keeps power at

Ultra-stiff cluster keeps power at the wheels

12mm length

preventing sweat and rubbing

reduce vibration and increase lateral stability

slow flash

Dura-Ace RD-R9250F Di2 Rear Derailleur - 12-Speed, Medium Cage, Includes TL-EW300, Black spring kit Ultra-stiff cluster keeps power atThe 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