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Shimano Dura-Ace CS-R9100 11-Speed Cassette 11-25 Cassette 11spd
11-25 Cassette 11spd
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Shimano Dura-Ace CS-R9100 11-Speed Cassette

(13)

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Mfg PartNum:
$147.04-$292.99
MSRP: $269.99-$292.99
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Description

Meet The New Dura-Ace 9100 Cassette

Upgrade your gearing to the incredible dependability and meticulous engineering of Shimano's Dura-Ace CS-R9100 11-Speed Cassette. 9100 isn't a typo there, it is, in fact, a newly reworked version of Dura-Ace. When the brand introduces a new groupset, you can be sure it's actually boasting improvements you don't have to be in the pro peloton to immediately detect.

Since Dura-Ace is the top-tier drivetrain in the Shimano road lineup, you might be surprised that only the largest five cogs are titanium. That's because—though it's lighter—titanium is generally more prone to wear than nickel-plated steel, and the smaller cogs are more prone to wear than the larger. Because of these material properties, Shimano only uses titanium where the softer metal doesn't create a significant negative impact.

Features:

  • Ride with more intuitive gearing on this improved cassette from Shimano
  • Precisely machined cogs balance weight and durability
  • Carbon and alloy carrier blends low weight and strength
  • Titanium (top 5) and nickel-plated steel (smallest 6) construction
  • Carbon fiber and alloy carrier
  • Available in 11-25t, 11-28t, 11-30t, 12-25t, 12-28t options
  • Compatible with Shimano 11-speed hubs
  • Weight: 187g (11-28t)

Returns: Openbox, B-Stock, and Closeout products can be returned within 60 days for store credit.

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

Cassette Use: Road 

Cassette Type: Shimano 11 

Drivetrain Speed: 11-Speed 

11-25 Cassette 11spd

Mfg PartNum: ICSR910011125 

11-28 Cassette 11spd

Mfg PartNum: ICSR910011128 

11-30 Cassette 11spd

Mfg PartNum: ICSR910011130 

12-25 Cassette 11spd

Mfg PartNum: ICSR910011225 

12-28 Cassette 11spd

Mfg PartNum: ICSR910011228 

Reviews

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Reviewed 9/24/2020
by cjharrer
Competitive Racer
Downingtown PA
Value Rating
Overall Rating
4 of 4 customers found this review helpful.
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
3 of 3 customers found this review helpful.
The best!

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

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Reviewed 3/11/2022
by Jim Shannon
Cycling Enthusiast
Knoxville, TN
Value Rating
Overall Rating
Second Time Around

This is the third cassette & chain of these I've used for Dura-Ace. 1st set I got 9013 miles and 2nd was 8571. Proper maintenance (cleaning and lube) can extend the mileage. When the chain needs replacing, I replace the cassette. Prior to replacing I still was not experiencing any issues. Replaced chain due to recommended measurements.

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Reviewed 8/16/2019
by OHRider
Cycling Enthusiast
Cleveland, OH
Value Rating
Overall Rating
3 of 3 customers found this review helpful.
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
4 of 4 customers found this review helpful.
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
5 of 6 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
2 of 2 customers found this review helpful.
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 6/21/2024
by Raymond
pasadena, CA
Overall Rating
Excellent product at a great price

Known Dura Ace quality at a somewhat affordable price.

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Reviewed 6/21/2024
by Raymond
pasadena, CA
Overall Rating
Excellent product at a great price

Known Dura Ace quality at a somewhat affordable price.

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Reviewed 7/20/2022
by GhostRider
Cycling Enthusiast
East Coast, Long Island
Overall Rating
Have always had good wear on DuraAce cassettes

its a cassette I trust, looks like they have changed the packaging, probably due to supply chain issues

BikeTiresDirect.com Comments
Shimano removed all plastics from their packaging early this year, and have also moved away from their glossy finish outer packaging to a more natural paper stock with a matte finish and more recycled materials.
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Reviewed 9/25/2017
by Hank
Cycling Enthusiast
Portland
Overall Rating
6 of 6 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 6/22/2017
by Imad
Daily Commuter
Portland, OR
Overall Rating
4 of 4 customers found this review helpful.
seamless, lite shifting, using durace electronic shifters

lots of short, steep climbs and rolling hills

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Reviewed 8/19/2019
by RoboKrause
Manhattan, KS
Overall Rating
4 of 4 customers found this review helpful.
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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