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 range and it has programmed chain guide trim settings and can be used in full or semi SHIMANO SYNCHRONIZED SHIFT modes.
GRX Di2 11 speed front derailleur Delivers quick and smooth front shifting even under high pedaling torque Chainline +2.5 mm vs. conventional road FD for added tire clearance, up to 42mm 17T capacity offers wider gearing options like the 31/48T FC-RX810-2 crankset Programmed chain guide trim settings Can be used in full or semi SHIMANO SYNCHRONIZED SHIFT modes Top gear: 46T to 50T