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Shimano Dura-Ace Di2 FD-R9150 Front Derailleur Adaptor SM-AD91 Adapter - 34.9mm
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Shimano Dura-Ace Di2 FD-R9150 Front Derailleur Adaptor

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$16.99
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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.

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.

SM-AD91 Adapter - 34.9mm

Mfg PartNum: ISMAD91L 

SM-AD91 Adapter - 31.8mm w/28.6 Adapter

Mfg PartNum: ISMAD91MS 

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Reviewed 5/31/2021
by Anonymous
Overall Rating
Works and fits as intended

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

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Reviewed 6/19/2020
by Anonymous
Overall Rating
Great!

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

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Reviewed 6/18/2020
by HampstenTi
Cycling Enthusiast
Sacramento, Ca
Value Rating
Overall Rating
Great fit and finish. Does what it is supposed to do.

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

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Reviewed 5/11/2021
by D. Walker
Cycling Enthusiast
Portland, OR
Overall Rating
GRX Required Adapter

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.

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Reviewed 9/22/2020
by delbiker
Cycling Enthusiast
south coastal Delaware
Overall Rating
It works

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

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Reviewed 3/2/2019
by Dale
Cycling Enthusiast
Charleston, WV
Overall Rating
0 of 4 customers found this review helpful.
High quality part.

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.

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