Shimano 105 RD-R7150

The Shimano 105 RD-R7150 marks a historic milestone as the first-ever electronic rear derailleur in the 105 lineup, bringing high-speed 12-speed Di2 shifting to the "workhorse" of the cycling world. Like its higher-tier siblings (Ultegra and Dura-Ace), the RD-R7150 acts as the communication hub of the drivetrain, featuring an integrated charging port and a wireless transceiver. It is designed with a focus on ease of use and reliability, offering a wide-range capability that handles up to a 36T cassette. This makes it the ultimate choice for enthusiast riders who want the precision of electronic shifting combined with the gear range needed to conquer the steepest alpine climbs.

Key Features

• First-Ever 105 Di2: Provides the same lightning-fast, wireless shifting logic as Shimano's flagship groupsets at a more accessible price point.

• Integrated Wireless & Charging: Houses the system’s brain, featuring a single magnetic charging port and LED indicators for battery life and pairing status.

• Shadow RD Design: The low-profile architecture keeps the derailleur tucked away from potential impact and ensures aerodynamic efficiency.

• 36T Max Low Sprocket: Specifically optimized for wider gear ranges, allowing for a 1:1 or better climbing ratio when paired with a compact crankset.

• E-TUBE PROJECT Compatibility: Fully customizable via smartphone, allowing you to adjust shift speed, multi-shift settings, and Synchro Shift mapping.

Specifications

• Drivetrain Speeds: 12-Speed Di2

• Maximum Low Sprocket: 36T

• Minimum Low Sprocket: 34T

• Total Capacity: 41T

• Pulley Teeth: 11T

• Wiring System: EW-SD300

Typical Components Included

• RD-R7150 Rear Derailleur

• B-Axle Washer

• User Manual

• (Note: EW-EC300 Charging cable sold separately)