Shimano Dura-Ace FD-R9150 Di2 Front Derailleur Braze-on Adaptor 28.6/31.8mm General Tools it delivers the durability and

it delivers the durability and consistent performance that single-speed riding requires

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the edges land where they should and there is no guesswork with a razor blade against a carbon frame

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the extra thickness damps road buzz selectively

Shimano Dura-Ace FD-R9150 Di2 Front Derailleur Braze-on Adaptor 28.6/31.8mm General Tools it delivers the durability andWhat 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