The 12-speed SHIMANO GRX Di2 groupset features integrated wireless connectivity unit and charging port, ensuring fast and reliable shifting on mixed terrain, and easy charging. The integrated SHADOW RD+ technology eliminates chain noise and ensures precise shifting even on rough terrain. Thanks to the built-in ON/OFF switch, wheel removal is also simplified. The RD-RX825 rear derailleur is compatible with 12-speed 11-34D and 11-36D cassettes and supports fully synchronized or partially synchronized shifting modes for greater customization based on individual needs.
- Fast and reliable shifting on rough terrain
- Adjustable stabilizer eliminates chain noise
- SHIMANO SHADOW RD+
- Clutch tension specifically tuned for Gravel
- Stabilizer ON/OFF switch for terrain matching: ON for Gravel, OFF for smooth surfaces
- LED status indicator
- Battery indicator, pairing, adjustment mode, etc.
- Smallest sprocket: Max. 11D/Min. 11D
- Largest sprocket: Max. 36D/Min. 34D
- Total capacity: 40D