Shimano Ultegra Derailleur (Spec. Di2) FD-R8050 Double Down Swing

The SHIMANO ULTEGRA R8050 DI2 derailleur offers fast and smooth shifting even with high pedaling loads. The derailleur features programmed chain guide trim settings and can be used in SHIMANO Full or Semi SYNCHRONIZED shifting modes.

• Quick and smooth front shifting with high pedaling power
• Programmed chain guide control
• SHIMANO SYNCHRONIZED SHIFT
• Synchronized and semi-synchronized gearbox program
• Redesigned to accommodate larger chainring pitches without compromising shifting performance
• Reduced rear stay length (410 mm) with 135 mm stop
• The system's communication with the gearbox, together with the programmed chain guide control means minimal risk of the chain falling