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Shimano Dura-Ace Front Derailleur Braze-On Adaptor SM-AD91 Adapter - 34.9mm
SM-AD91 Adapter - 34.9mm
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Shimano Dura-Ace Front Derailleur Braze-On Adaptor

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Mfg PartNum:
(8 customer reviews)
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Description

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.

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

Specifications

SM-AD91 Adapter - 34.9mm

Mfg PartNum: ISMAD91L 

SM-AD91 Adapter - 31.8mm w/28.6 Adapter

Mfg PartNum: ISMAD91MS 

Reviews

Ordered by Most Relevant First
5 stars
4 stars
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1 stars
(7)
(1)
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(88%)
(13%)
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Perfect
by Andre
Cycling Enthusiast

Perfect, works as intended and looks pretty good as well

Reviewed 5/17/2024
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Great!
by Anonymous
1 of 1 customers found this review helpful.

Works as described. Used it to install new GRX front mech on my Macho Man disc!

Reviewed 6/19/2020
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Exactly what I needed
by Goldmund
Cycling Enthusiast
Brooklyn, NY

Does the job!

Reviewed 2/3/2023
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GRX Required Adapter
by D. Walker
Cycling Enthusiast
Portland, OR
1 of 1 customers found this review helpful.

Recently upgraded to a GRX front derailleur and crankset to get rid of some tire rubbing issues I was having with an older dura ace front derailleur. Problem solved with the upgrade but I wish Shimano made an option to purchase together with the derailleur instead of separate parts.

Reviewed 5/11/2021
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It works
by delbiker
Cycling Enthusiast
south coastal Delaware

It's a derailleur clamp and does what it is supposed to do.

Reviewed 9/22/2020
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Great fit and finish. Does what it is supposed to do.
by HampstenTi
Cycling Enthusiast
Sacramento, Ca

Great Shimano fit and finish. Reasonable price. Functions as it should.

Reviewed 6/18/2020
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High quality part.
by Dale
Cycling Enthusiast
Charleston, WV
0 of 6 customers found this review helpful.

You don't want critical components of your bike to fail while far away from your car. This clamp is critical to mission success. It is built to the exact standards that will not fail you.

Reviewed 3/2/2019
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Works and fits as intended
by Anonymous

Bought to outfit 2002 Lemond steel frame bike. Fit and functioned as intended.

Reviewed 5/31/2021
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