Shimano Dura-Ace Front Derailleur Braze-On Adaptor SM-AD91 Adapter - 31.8mm w28.6 Adapter

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This Shimano Front Derailleur Adapter allows Dura-Ace Di2 9150 front derailleurs to be mounted on frames that don't have braze-on mounts built in. The clamp is available in various sizes for compatibility with various seat tube diameters. | Shimano Dura-Ace Front Derailleur Braze-On Adaptor SM-AD91 Adapter - 31.8mm w28.6 Adapter