Welcome to the next generation of road drivetrains. Dura-Ace R9100 is ready to change your idea of how great a racing bicycle can perform.
Electronic shifting offers some of the smoothest and most technologically advanced shifting available. The all-new redesigned Shimano Dura-Ace RD-R9150 Rear Derailleur takes advantage of Shimano's Shadow RD architecture, first introduced for mountain bikes. The low profile not only gives it a sleek look while also providing extra damage protection in case of a crash but improves system stiffness for maximum shift performance. Combined with Shimano's Di2 Synchro Shift customizable programming that automatically handles front and rear shifts to give you perfectly sequential ratios, DURA-ACE Di2 delivers a level of intuitive shift performance never before seen.
Shimano Synchronized Shift Compatible
Compatible with new wide-range 11-30T 11 Speed Dura-Ace Cassette
Simplified shifting options
Shimano Shadow RD low-profile design, also allows for direct mount with special hanger
Pulley maintains consistent distance to cassette for increased shift stability
Tucked design results in less damage in a crash, but maintains compact and smooth appearance
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