Experience faster, more accurate rear shifting with the new wireless Shimano R7150 Di2 105 12-speed rear derailleur. A more compact design integrates the wireless unit, charging port and function button.
You can check the battery level and Bluetooth/ANT pairing success with your cycle computer/smartphone/tablet. Plus select your preferred shift mode and view adjustment mode information (if you wish to tweak or tune your rear derailleur).

• Compatible with 11-34 and 11-36T cassettes
• Integrated D-FLY connectivity
• Smartphone and tablet connectivity via E-Tube PROJECT app