Shimano GRX Di2 Front Derailleur (FD-RX815) Groupe 6mm stack height for improved

6mm stack height for improved stability and injury prevention

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

Interior - Hi-contrast red material with separate ID

Hardened steel for maximum stability

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

Shimano GRX Di2 Front Derailleur (FD-RX815) Groupe 6mm stack height for improvedThe 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