Shimano Ultegra Di2 FD-R8050 braze-on front derailleur

The new FD-R8050 is redesigned to fit a wider gear pitch without sacrificing shifting performance. Quick and smooth front shifting is guaranteed under all circumstances, even when you’re shifting to the large chainring while riding out of the saddle.

Features

• Shimano synchronized shift.
• Quick and smooth front shifting "under" high pedaling torque.
• Maintains compact and smooth appearance.
• Top gear teeth: 46-53T.
• Chain stay angle: 61-66°.
• Chain line: 43.5
• Speed: 2x11
• Real weight: 130 g

Technology

Synchro Shift
First introduced in XTR Di2 M9050, Shimano’s innovative Synchro Shift is now available with Dura-Ace R9150. Available as a programmable Di2 option, Synchro Shift creates an intuitive experience on the bike through Synchronised front and rear shifting that can be custom programmed by riders.
In addition to traditional “Full” Synchro Shift, riders can optionally select “Semi” Synchro Shift. This intuitive new mode automatically reacts when the rider shifts from one chainring to another, automatically shifting the rear derailleur to minimise the gear step, thus preserving the rider’s rhythm.

Shimano D-Fly SM-EWW01 not compatible.
Shimano battery SM-BTR2-1  not compatible.

Find out more on the packaging of this item.