GRX RD-RX815 Di2 Rear Derailleur
- Operates with Shimano Di2 for digital electronic shifting
- Gravel-tuned clutch tension provides smooth and reliable mixed surface shifting
- For 1x drivetrains
- Color:Â Black
- Largest Cog:Â 42
- Rear Derailleur Mount Type:Â Shimano Rear Direct Mount
- Chain Wrap Capacity (teeth):Â 31
- Cage Length:Â Long
- Rear Der/Shifter Compatibility:Â Shimano Road Di2
- Drivetrain Speeds:Â 11
- Weight:Â 318
