The front derailleur of the Dura Ace Di2 group is a mechatronic unit that presses the chain precisely and quickly onto the desired chainring. In interaction with the stiff chainrings, with their perfectly coordinated shifting aids, shifting operations are completed in the shortest possible time.

Typical problems with the gears, such as adjusting the derailleur, no longer exist thanks to the electronics! The auto-trim function saves valuable time because the derailleur is readjusted automatically, depending on the gear ratio.

Material: aluminum, titanium, carbon composite

Design: Fastening via soldering base or optional clamp

Compatibility shift lever: 11-speed Shimano Dual Pull ST-R9100, ST-R9120, ST-9000, ST-9001

Compatibility large chainring: 46-55 teeth

Capacity: 2-fold with 16 teeth difference between the largest and smallest sheet

chain line : 43.5 mm

Chain stay angle: 61 ° -66 °

Color: Black