Shimano GRX FD-RX815-F 2 x 11 Speed Di2 Braze-On Front Derailleur 50t max Chainring

GRX FD-RX815 Di2 Front DerailleurOperates with Shimano Di2 for digital electronic shiftingChainline is increased by 2.5mm over conventional front derailleurs for greater tire clearance in the front17t front range provides more gear range in the front