Shimano Dura-Ace RD-R9150

The Shimano Dura-Ace RD-R9150 is the definitive 11-speed electronic rear derailleur, combining professional-grade durability with the lightning-fast precision of Di2 technology. Designed with Shimano's Shadow RD low-profile architecture, it sits closer to the frame to minimize wind resistance and protect the mechanism from damage in the event of a crash. This derailleur offers a stable, consistent shifting feel across the entire cassette, even under extreme pedaling loads. With its programmable Synchro Shift options, it allows for seamless communication with the front derailleur, optimizing your gear steps automatically so you can focus entirely on the race.

Key Features

• Shadow RD Design: The sleek, low-profile layout reduces aerodynamic drag and keeps the derailleur tucked out of harm's way.

• Di2 Precision: Provides instant, accurate gear changes with a single click, eliminating the inconsistencies of mechanical cables.

• Programmable Shifting: Fully compatible with Shimano’s E-TUBE PROJECT for customizing shift speeds and Synchro Shift mapping.

• Race-Ready Durability: Constructed with high-strength carbon fiber and cold-forged aluminum to withstand the rigors of WorldTour racing.

• Wide Compatibility: Supports up to a 30T low sprocket, providing ample range for both flat stages and steep alpine climbs.

Specifications

• Drivetrain Speeds: 11-Speed Di2

• Maximum Low Sprocket: 30T

• Minimum Low Sprocket: 25T

• Total Capacity: 33T

• Pulley Teeth: 11T

• Connectivity: Wired (EW-SD50)

Typical Components Included

• RD-R9150 Rear Derailleur

• B-Axle Washer

• User Manual