Shimano SM-AD91 Dura-Ace 9150 Di2 Front Derailleur Adapter 34.9mm or 28.6/31.8mm

Group: Dura Ace Di2 / Ultegra Di2. Dura Ace Di2 FD-R9150-F. Ultegra Di2 FD-R8050-F. Dura Ace FD-R9100-F. SM-AD91 Clamp Band Adapter 34.9mm or 28.6mm/31.8mm. Ultegra FD-R8000-F.

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