Shimano Dura-Ace FD-R9150 Di2 Front Derailleur Braze-on Adaptor 28.6/31.8mm

Shimano Dura-Ace FD-R9150 Di2 Front Derailleur Braze-on Adaptor 28.6/31.8mm Shimano

Shimano Dura-Ace FD-R9150 Di2 Front Derailleur Braze-on Adaptor 28.6/31.8mm

Shimano Dura-Ace FD-R9150 Di2 Front Derailleur Braze-on Adaptor 28.6/31.8mm

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What is the Shimano Dura-Ace FD-R9150 Di2 braze-on adaptor?

This is the braze-on seat tube adaptor for the Shimano Dura-Ace FD-R9150 Di2 front derailleur, allowing the braze-on style derailleur to mount on frames with 28.6mm or 31.8mm round seat tubes. Some frames are built for band-clamp front derailleur attachment rather than braze-on tabs, and this adaptor bridges the gap, letting riders run a braze-on Di2 front derailleur on frames that would otherwise require a clamp-on unit. A small but necessary piece of hardware for certain frame and groupset combinations.

Compatible with Shimano Dura-Ace FD-R9150 Di2 front derailleur. Fits 28.6mm and 31.8mm seat tube diameters. Verify your frame's seat tube diameter and front derailleur mount type before ordering.

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Specifications

  • Type: Braze-on to clamp-band front derailleur adapter
  • Compatible Sizes: 28.6mm, 31.8mm seat tubes
  • Compatible Derailleur: Shimano Dura-Ace FD-R9150 Di2
  • Mount Type: Clamp band adapter

FAQ

What does the braze-on adapter do?

The adapter converts a braze-on front derailleur mount into a clamp-band mount, allowing braze-on derailleurs to be installed on frames without a braze-on tab. The adapter is supplied to fit either 28.6mm or 31.8mm seat tubes.

Is this adapter compatible with all Shimano braze-on Di2 derailleurs?

Yes. This adapter is designed specifically for Shimano braze-on Di2 front derailleurs. It is not compatible with mechanical front derailleurs or non-Shimano braze-on systems.

How do I know which size to use?

Confirm both diameters are supported. The adapter accommodates 28.6mm or 31.8mm seat tubes. Always verify your frame's seat tube diameter before installation.

Best For

Builders mounting a Shimano Dura-Ace FD-R9150 Di2 braze-on front derailleur to a frame requiring a 28.6mm or 31.8mm clamp band adapter.

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