Shimano Ultegra FD-R8050 Di2 11-Speed Front Derailleur Model=Drive Unit Connection Cable includes Viper nylon hub guard

includes Viper nylon hub guard and Gong driver guard

Cross Bar Compatibility Aero Vehicle Mount Type Naked Roof

Presta and Shrader valve compatible

} Onyx hubs transfer the precise amount of torque you want to the ground when you need it

Shimano Ultegra FD-R8050 Di2 11-Speed Front Derailleur Model=Drive Unit Connection Cable includes Viper nylon hub guardShimano Ultegra FD R8050 Di2 11 Speed Front Derailleur. Ultegra FD R8050 Front DerailleurSystem communication with rear derailleur combined with programmed chainguide control means minimal chance of chain drop Quick and smooth front shifting under high pedaling torque TECH SPECS Double or Triple Double Drivetrain Speeds 11 Derailleur Capacity 16 Front Derailleur Clamp Braze on Front Derailleur Cable Pull Electronic Front Der Shifter Compatibility