The 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 chainring range, has programmed chain guide trim settings, and can be used in full or semi Shimano Synchronized Shift modes.
– Chainline +2.5 mm vs. conventional road FD
– Wide, 17T front range chainring range
– Wider tire clearance
