Shimano Dura-Ace Di2 RD-R9250 12-Speed Rear Derailleur
The DURA-ACE RD-R9250 integrates the system charging port and a wireless connectivity unit all while delivering super-fast, precise shifting worth of any podium. A single cage length that is compatible with 28-34T low sprockets bringing new versatility to the world's best road component group.
The fastest ever rear shifting, 58% faster than RD-R9150
Compact design includes an integrated wireless unit, charger, and switch
LED status indicator
Adjust mode, etc.
Wider range capacity
Max. low sprocket: 34T
CFRP rear derailleur plate