Shimano DURA-ACE Di2 Rear Derailleur RD 12-speed RD-R9250F Bike Computer Mount

Shimano DURA-ACE Di2 Rear Derailleur RD 12-speed RD-R9250F Bike Computer MountOVERVIEW Shimano DURA ACE Di2 RD R9250 12 speed Rear Derailleur The Shimano Dura Ace RD R9250 12 speed rear derailleur combines charging port and wireless system in one compact unit to provide a lightning fast and precise shifting performance that is ready to win. With just one cage length, the rear derailleur shifts on cassettes from 11 28T to 11 34T, further enhancing the versatility of the world's best road bike component group. THE SCIENCE OF

keeping your chain cleaner and reducing the need for frequent maintenance

providing an ideal perch for your hands while riding on the hoods

Syncros Carbon parts

Loading width: 118/127/135/150cm

We also have stems

It’s Effective

SRAM’s cassette manufacturing technology provides the greatest durability and lightest weight

it simply stops rust in its tracks

Impressive higher battery amp-hour capacities provide longer run times for unbeatable performance

Volume Control: independent fit adjustment for instep and forefoot

from gravel riding to mountain biking to road racing

better ride feel and a more accurate power measurement