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Shimano Ultegra FD-R8000-B Front Derailleur 34.9mm Clamp
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Shimano Ultegra FD-R8000-B Front Derailleur

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Shimano set out to bring their pro-proven performance that riders expect from the Dura Ace series to their Ultegra groupset at an affordable price. The Shimano Ultegra FD-R8000-B Front Derailleur features all of the features of the Dura Ace 9100 series with only minimal weight difference. Featuring the new link construction, this front derailleur provides a significantly lighter shift operation that matches the force curve of the hand more naturally, reducing the effort required for a shift. With the new Link construction, the FD-R8000-B allows for more flexible cable routing design, making it easier to set up and maintain than ever. Designed with ease of use in mind, the FD-R8000-B allows for tool-free adjustment and integrated cable tension setting without the need of specialized tools. The FD-R8000 was also redesigned to perform better with disc-specific frames, fitting wider gear pitch without sacrificing shift quality

Claimed weight: 106 grams.

This Ultegra FD-R8000-B Front Derailleur is available in two clamp sizes, either 34.9mm or 31.8mm (with a 28.6mm adapter). If your frame needs a braze-on derailleur, the FD-R8000-F Front Derailleur will be compatible. If you need help deciding what is compatible with your frame, feel free to Contact Us, and we'll be happy to help.

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.

34.9mm Clamp

Mfg PartNum: IFDR8000BL 

31.8mm Clamp - w/28.6mm adaptor

Mfg PartNum: IFDR8000BSM 

Ordered by Most Relevant First
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1 stars
Reviewed 9/14/2021
by RichRiesAdventure
Cycling Enthusiast
Madison, IN
Value Rating
Overall Rating
great performance but mind the setup

I reconfigured the drive on my gravel bike and needed a new front derailleur. This one worked perfectly, as I expected it to. Note that Shimano changed the setup procedure for road front derailleurs some years ago and if you've not updated your technique to the new protocol, your installation will fail. The new procedure is as simple as the old one but provides much crisper, more precise shifting. Shimano has full setup details online. Anyway, yes I'd buy this again and yes, I recommend it to others.

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Reviewed 11/15/2021
by JeffL
Competitive Racer
Eugene, OR
Value Rating
Overall Rating
Winter Gravel Bike Build

Building a carbon race gravel bike this winter and using the Easton cranks and chainring set up. Due to the narrower Q factor of the Easton set up you use a standard Ultegra front derailleur. Using GRX group set everywhere else. This is an excellent combination as I prefer the narrow Q factor over the wider one on the GRX crank set.

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Reviewed 12/20/2019
by NB Biker
Cycling Enthusiast
South Central TX
Value Rating
Overall Rating
3 of 3 customers found this review helpful.
Shimano Ultegra Front Derailleur.

Shimano quality as you would expect and at a fair price.

Simple enough to install and adjust. Just don't rip off the little red tag hanging from the cage when it comes out of the box because it is a very useful part of the install process.

It has been on the bike for a few months and shifts smoothly and reliably.

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