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

with the exit of warm air from within a key priority

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

The Cobra9 SemiPro has been designed for further customisation by bike fitters

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 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