Shimano GRX Di2 FD-RX815

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 Attributes Chainline 46.9mm Cable Pull Di2 FD Capacity 17T Chainstay Angle 61-66 FD Mount Type Braze-on Swing Down FD Weight 135g Max Chainring 48T Primary Color Grey Speed 11