Shimano RD-RX825 GRX Di2 12-Speed Rear Derailleur

The RX825 rear derailleur features Shimano’s pioneering SHADOW RD+ technology. With its convenient on/off switch, SHADOW RD+ makes removing the rear wheel easy when turned off. When on, the drivetrain is under additional tension that makes for a quieter ride and more precise shifting.

Like on Shimano’s road 12-speed Di2 systems, the rear derailleur is also the communication hub of the drivetrain, communicating wirelessly with the shift levers, compatible cycle computers, and E-TUBE PROJECT Cyclist via a smartphone. It also houses the system’s charge port and the multi-function button which allows riders to easily check battery level, pair via Bluetooth, and enter adjustment mode for both derailleurs.

• SHIMANO SHADOW RD+ Chain Stabilization
• Integrated D-FLY connectivity and charging
• 12-speed
• Compatible with 11-34T and 11-36T cassettes
  
• 310 grams

Manufacturers SKU: IRDRX825A
Item Number: RD-RX825