NEW Shimano Dura-Ace RD-R9250F Di2 Rear Derailleur - 12-Speed, Medium Cage, Includes TL-EW300, Black price_changed_on_2023-07-16 and 24" in the back

and 24" in the back for strength and a lower center of gravity

Alloy mast

Slight whale tail and gentle drop to the nose

and reduced brake squeal

NEW Shimano Dura-Ace RD-R9250F Di2 Rear Derailleur - 12-Speed, Medium Cage, Includes TL-EW300, Black price_changed_on_2023-07-16 and 24" in the backThe 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