Shimano GRX Di2 Front Derailleur (FD-RX815) Groupe Over 10 years of aero

Over 10 years of aero product development with a focus on real-world performance has led us to tire development

It makes pedaling more efficient with a wide variety of shoe and pedal styles and the recess cleat makes walking more comfortable

The Dura-Ace PD-R9100 pedals provide the perfect balance of low weight and high rigidity

Bontrager™ (with adapter)

T20 and T25

Shimano GRX Di2 Front Derailleur (FD-RX815) Groupe Over 10 years of aeroThe 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