Shimano Ultegra FD-R8150 Di2 Front Derailleur 2×12-Speed Braze-On Road Bike
See “Will This Fit My Bike?”. Fast, precise front shifts in any condition. Shimano Ultegra Di2 FD-R8150 Front Derailleur — 2×12-Speed. MPN IFDR8150F • Braze-On • Electronic Di2. Semi-wireless Di2 — wireless shifter signal, battery-powered derailleur.