Shimano Dura-Ace R9250 Di2 Rear Derailleur - 12 Speed
- Shiamno's fastest ever rear shifting, 58% faster than RD-R9150
- Compact design includes an integrated wireless unit, charger, and switch
- Battery indicator
- Pairing
- Adjust mode, etc.
- Max. low sprocket: 34T
- CFRP rear derailleur plate