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Shimano Dura-Ace CS-9100 11-Speed Cassette

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Backorder: This item is currently out of stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

The Shimano Dura Ace CS-9100 11-Speed Cassette features titanium construction on the five largest sprockets and a carbon composite / alloy spider for high-performance at a low weight. Hyperglide tooth profiles ensure precise, reliable shifting with the Shimano 11-speed chains, and the introduction of new 11-30 gearing option means the Dura Ace R9100 group is the most versatile yet.

Claimed weight is 175 g (11-25 cassette).

Cog sizes:

  • 11-25T: 11-12-13-14-15-16-17-19-21-23-25
  • 11-28T: 11-12-13-14-15-17-19-21-23-25-28
  • 11-30T: 11-12-13-14-15-17-19-21-24-27-30
  • 12-25T: 12-13-14-15-16-17-18-19-21-23-25
  • 12-28T: 12-13-14-15-16-17-19-21-23-25-28

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.

Cassette Type: Shimano 11 

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Reviewed 9/24/2020
by cjharrer
Competitive Racer
Downingtown PA
Value Rating
Overall Rating
Shimano Dura-Ace is the standard all groupset should measure up to

I love the look and polish of Campy, but I switched to Shimano Dura-Ace years ago and haven't looked back. It is in my opinion the best high end groupset for the money. Easy to service, easy to maintain, easy to get parts. The Dura-Ace cassette is lighter than Ultegra and 105, does it really matter - to me yes it does. I have high end carbon whees and bike so I want all weight advantages I can get. This cassette with dura-ace chain and derailleur is quick, crisp shifting!

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Reviewed 8/20/2019
by Anonymous
Cycling Enthusiast
Vista, CA
Value Rating
Overall Rating
The best!

I have Dura Ace on both my bikes. A very smooth ride!

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Reviewed 8/16/2019
by OHRider
Cycling Enthusiast
Cleveland, OH
Value Rating
Overall Rating
Shimano parts always work as described and never disappoint.

Transitioning to Shimano Dura-Ace Di2 after many years on Campy mechanical. This cassette forms part of what is a very well designed and reliable drive train.

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Reviewed 2/4/2019
by Stephen
Mi
Overall Rating
Durable, quality cassette

30 cog is perfect for rolling terrain.

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Reviewed 9/7/2017
by Red
Cycling Enthusiast
Woodland Hills, CA
Value Rating
Overall Rating
3 of 4 customers found this review helpful.
Shimano What can i say!!!!

Shimano has always come out with great products and always cutting edge in technology. This cassette by far is the best cassette i've ever used, so light and gotta love that 30 gear...

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Reviewed 1/28/2019
by Anonymous
Overall Rating
Quality as usual

Shimano high end parts are that , high end and a lot of companies try to copy it but shimano know there stuff. Expensive but worth what you pay

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Reviewed 9/25/2017
by Hank
Cycling Enthusiast
Portland
Overall Rating
3 of 3 customers found this review helpful.
High quality part

I needed a second set for my trainer and wanted to match exactly my bike to keep change over time at a minimum. Good price and high quality.

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Reviewed 8/19/2019
by RoboKrause
Manhattan, KS
Overall Rating
Extra for carbon wheel set

Duracesmooth as butter. Had to get an extra for my new carbon wheelset. Didnt wanna keep pulling off my cassette. I do find the 30t a nice bump for those 22% grades I never ride.

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Reviewed 6/22/2017
by Imad
Daily Commuter
Portland, OR
Overall Rating
2 of 2 customers found this review helpful.
seamless, lite shifting, using durace electronic shifters

lots of short, steep climbs and rolling hills

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