Or as low as 
Shimano GRX RX815 Di2 Front Derailleur – 11 Speed
The Shimano GRX RX815 Di2 front derailleur delivers quick and smooth front shifting even under high pedaling torque. It’s designed for a wider, 17T front range and it has programmed chain guide trim settings and can be used in full or semi Shimano Synchronized Shift modes.
Features
- Wider tyre clearance
- Chainline +2.5 mm vs. conventional road FD
- Wider range front gearing
- 17T front range
