Shimano Shadow RD low-profile design, Shimano brings much needed wide ratio technology from it’s mountain groups to the new Dura Ace rear derailleur.
RD-R9100, SHIMANO SHADOW RD (11-speed) Shimano Shadow RD low-profile design Pulley maintains consistent distance to cassette for increased shift stability Less damage in a crash Maintains compact and smooth appearance Total capacity: 35T Weight: 158g
