Shimano GRX Di2 Front Derailleur (FD-RX815) Size:Braze-on It easily adapts to rim

It easily adapts to rim internal profiles and

That was made possible through the stiff structure positioned in the rear part of the brake

An aerodynamically honed stem with adjustable length and angle to optimize your position

but do not tumble dry

Shimano GRX Di2 Front Derailleur (FD-RX815) Size:Braze-on It easily adapts to rimThe 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