Shimano GRX Di2 FD-RX815 Front Derailleur

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
• 135g