Shimano SM-AD91 Clamp for Dura-Ace / ULTEGRA Braze-on Front Derailleur
Aluminum clamp to mount the Dura Ace and Ultegra (Di2) braze-on front derailleur to frames without a braze-on socket. The 31.8 mm includes the adapter to reduce to 28.6 mm.
Compatibility:
-FD-R9250
-FD-R8150
- FD-R9100
- FD-R9150
- FD-R8000
- FD-R8050