Shimano Dura Ace 9100 11 Speed Rear Derailleur Mechanical

Shimano DURA ACE 9100 11 Speed Rear Derailleur Mechanical. The Shimano DURA ACE 9100 mechanical rear derailleur is compact, lightweight, and has a sleek appearance. The 9100 mechanical rear derailleur is an 11 speed design with a 30T maximum sprocket, and a total capacity of 35T. It weighs just 158g and has been adapted for race specific frame design. It features the Shimano Shadow construction, which the pulley maintains consistent distance to the cassette for increased shift stability, and it sustains less damage in a crash.