Ultegra DI2 FD-R8050 Front Derailleur Braze-on

When using the electronic Shimano DI2 FD-R8050 front derailleur from the Ultegra group in combination with compatible Di2 components, you will get a perfectly set-up electronic shifting system for intuitive and reliable gear changes. The down swinger with a clear design even reliably shifts the chain under high load and also fits a wider gear pitch.
The two modes of the Synchro-Shift technology ensure best shifting precision and performance at any time. Besides, the auto-trim feature will automatically centre the front derailleur precisely around the chain, avoiding chain rub as you move the chain across the cassette.

Details:
· Electronic front derailleur
· Mounting: braze-on or with optional clamp
· Compatible with 11-speed/double
· Total capacity: 16 teeth
· Large chainring: 46 – 53 teeth
· Chain stay angle: 61 – 66°
· Chain line: 43.5 mm
· Compatible with SHIMANO Synchro-Shift
· Auto-Trim
· 1 E-Tube connector
· Compatible cable: EW-SD50
· Material: aluminium, steel, plastic (CFK)
· Weight: approx. 132 g

Please note: To mount the front derailleur to frames without braze-on socket, you need the optionally available front derailleur clamp SHIMANO SM-AD91 (prod. code: 2238032). Only compatible with Shimano Dura Ace and Ultegra Di2 11-speed/double shifters, such as: ST-R9180, ST-R9170, ST-R9160, ST-R9150, ST-9071, ST-9070, ST-R8070, ST-R8060, ST-R8050, ST-6871, ST-6870, ST-R785