Shimano GRX Di2 Front Derailleur (FD-RX815) Groupe with the exit of warm

with the exit of warm air from within a key priority

Interior - Hi-contrast red material with separate ID

6mm stack height for improved stability and injury prevention

Bontrager™ (with adapter)

Shimano GRX Di2 Front Derailleur (FD-RX815) Groupe with the exit of warmThe 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. Specifications Wider tire clearance Chainline +2. 5 mm vs. conventional road FD Wider range front gearing 17T front range Mfr Claimed Weight TBC