Shimano Dura Ace Di2 RD-R9250 12 Speed Rear Derailleur
Our fastest ever shifting across SHIMANO's widest ever DURA-ACE gear range, the RD-R9250 is capable of both race wins and personal bests.
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 brings new versatility to the world's best road component group.
Our 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
Mfr Claimed Weight