SM-AD91 Di2 clamp for front derailleur

The SM-AD91 clamp is required to mount the Dura Ace Di2 front derailleurs FD-R9150-F/FD-R9050-F and the XT Di2 front derailleur FD-R8050 on frames without a braze-on socket.

Also compatible with the Ultegra Di2 front derailleur FD-6870-F
Other compatible braze-on front derailleurs:  FD-R9100/9000/6800/5800/4700/4600/3500/2400/5801/U5000/U5050/R3000/R2000/5703/4703/4603/R3030/2030/CX70-T/CX70-D
Available in Ø 34,9 mm or 31,8 mm (incl. adapter to 28,6 mm)

Manufacturer’s ref. SMAD91L (Ø 34,9), SMAD91MS (Ø 31,8/28,6 mm)