Shimano Ultegra FD-R8050 Di2 11-Speed Front Derailleur

Programmed control of chain guide Full and semi synchronized shifting program System communication with rear derailleur, Programmed control of chainguide works for minimal chance of chain drop Quick and smooth front shifting under high pedaling torque SHIMANO Synchronized shift Redesigned to fit wider gear pitch without sacrificing shifting Shorter length of rear center (410mm) with O.L.D. 135mm