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Shimano Ultegra CS-R8000 11 Speed Cassette Shimano Ultegra CS-R8000 11 Speed Cassette
Shimano Ultegra CS-R8000 11 Speed Cassette Shimano Ultegra CS-R8000 11 Speed Cassette
Shimano Ultegra CS-R8000 11 Speed Cassette Shimano Ultegra CS-R8000 11 Speed Cassette
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Shimano Ultegra CS-R8000 11 Speed Cassette Shimano Ultegra CS-R8000 11 Speed Cassette
Shimano Ultegra CS-R8000 11 Speed Cassette Shimano Ultegra CS-R8000 11 Speed Cassette
Shimano Ultegra CS-R8000 11 Speed Cassette Shimano Ultegra CS-R8000 11 Speed Cassette

Shimano Ultegra CS-R8000 11 Speed Cassette

Mfg PartNum:
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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.

High Performance. Low Weight.

The Shimano Ultegra CS-R8000 11-Speed Cassette provides a wide variety of gearing options with a lightweight, durable construction of nickel-plated steel for seasons of corrosion-resistant riding. Utilizing trickled-down design and technology from their Dura Ace series, the R8000 weighs provides top-tier performance at a slight weight penalty. Featuring the same cogs-on-carrier design for the largest 5 cogs, this saves weight and increases strength.

Designed to provide superior rider choice, there's a R8000 cassette to suit nearly every riding style and terrain type.


Gearing and weights:

  • 12t / 25t (243 grams): 12, 13, 14, 15, 16, 17, 18, 19, 21, 23, 25.
  • 11t/ 28t (251 grams): 11, 12, 13, 14, 15, 17, 19, 21, 23, 25, 28.
  • 11t / 30t (269 grams): 11, 12, 13, 14, 15, 17, 19, 21, 24, 27, 30.
  • 11t / 32t (292 grams): 11, 12, 13, 14, 16, 18, 20, 22, 25, 28, 32.

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 

12-25T

Mfg PartNum: ICSR800011225 

11-25T

Mfg PartNum: ICSR800011125 

11-28T

Mfg PartNum: ICSR800011128 

11-30T

Mfg PartNum: ICSR800011130 

11-32T

Mfg PartNum: ICSR800011132 

14-28T

Mfg PartNum: ICSR800011428 

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Reviewed 8/9/2021
by Anonymous
los angeles
Overall Rating
Ultegra R8000 11 speed 11-30

Light, look awsome and function very well! Looking forward for many rides together.

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Reviewed 8/16/2021
by Anonymous
Cycling Enthusiast
Tucson, AZ
Value Rating
Overall Rating
Great product, Great value

100% roadie who isn't afraid of the dirt/water/and other perfect road conditions approves this cassette for all your cycling needs!

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Reviewed 8/27/2019
by Tuabui
Charlotte NC
Overall Rating
Almost seamless

I currently use the Ultegra CS5800 11 speed group set. Actually, this group set comes with the 105 11 speed cassette. My goal was to be able to switch out seamlessly with my current wheels so when I had a chance to buy a similar brand wheel sets but deeper, I bought the CS-R8000 cassette. The installation was simple but you will need a proper torque wrench to fit the Shimano cassette to the proper spec. You may need to adjust the brake pads to make sure there is no rubbing. I did not have to adjust the rear derailleur as the shifting was dead on. The sound coming from the new cassette as the shifting takes place was loud and crisp. The sound level is still crisp but less noticeable as the teeth began to wear and sits precisely on the chain. It feels great riding with a new cassette. I may have eliminated a few grams compared to the 105 cassette. I have put in 200 miles so far and enjoying the new cassette and deep wheels.

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Reviewed 5/21/2021
by Anonymous
Cycling Enthusiast
Santa Cruz Mountains, CA
Value Rating
Overall Rating
Dura Ace quality at Ultegra price point.

Having been devoted to full Dura Ace components and drive chains for over 20 years, I've migrated to full Ultegra without any loss of quality or performance. Even with marginal weight gains, the significant cost savings of Ultegra makes it a no-brainer. If I were a paid pro I'd surely go full Dura Ace, but as an avid high mileage endurance road rider footing my own expenses Ultegra has never disappointed.

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Reviewed 3/12/2021
by Anonymous
LI, NY
Overall Rating
0 of 1 customers found this review helpful.
Nice update

Having an 11 28t cassette on my trek street bike U found it cumbersome going up steep hills. The 11 30t cassette eased my efforts. I called with questions and was completely satisfied with the expertise i was given. Very happy with my experience.

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Reviewed 12/24/2020
by Cjharrer
Downingtown Pa
Overall Rating
Bought fire indoor trainer

Was just going to buy a 105 cassette fit direct drive trainer, but the sale price of this was cheaper. As expected, great, crisp shifts, no skips and very smooth.

Highly recommend.

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Reviewed 11/5/2020
by Superdupersix
San Diego
Overall Rating
Handles anything thrown its way

Relatively quiet, though a bit heavier. Never had a mis shift, just does as asked. Last ride was a huge climb, 4,500ft elevation in 13mi, no complaints.

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Reviewed 10/24/2020
by Timberwolve17
Central Tx
Overall Rating
Consistent, effective

With most cycling parts, it's about will it make me faster?

I purchased this cassette for a second wheelset. The cassette did not make me faster, but it did let me use my new wheels. Perviously my groupset was shimano 105, and I did not notice any significant differences upgrading to Ultegra.

Would I buy this again? Yes, but only because Dura Ace is such a dramatic jump up in price

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Reviewed 12/6/2018
by Aaron
Cycling Enthusiast
Value Rating
Overall Rating
1 of 1 customers found this review helpful.
awesome

love it... quiet.. use it on sram etap... i think it is better than red cassettes

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Reviewed 8/8/2020
by Anonymous
Overall Rating
Great product

It is well made and worth the extra money over the 105.

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Reviewed 9/17/2018
by Gwpelham
Cycling Enthusiast
Northern Nevada
Value Rating
Overall Rating
3 of 3 customers found this review helpful.
No drop off from DuraAce

Used to replace Dura Ace cassette. Its heavier but no drop off in shifting.

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Reviewed 9/11/2018
by Cat6Junior
Competitive Racer
Georgia
Value Rating
Overall Rating
3 of 3 customers found this review helpful.
Smooth shifting

I have been riding SRAM for the past 10 Years and I changed to Shimano last year. The shifting is smooth as butter and easy on the hands. So far it has been a good change.

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Reviewed 9/14/2018
by Anonymous
Nashville
Overall Rating
1 of 1 customers found this review helpful.
50 miles a week

Upgraded from an 12-25 105 cassette to an 11-28 Ultegra cassette (hills) and can actually feel smoother shifting with all of the rest of the components remaining 105.

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Reviewed 6/15/2020
by EnriqueC
Cycling Enthusiast
Near Memphis TN
Value Rating
Overall Rating
Much better than 6800

Every 8-10k miles or once a year and every other Dura-Ace chain, I get a new cassette. This new 8000 series makes shifting smooth and reliable. It's easy to clean and to install.

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Reviewed 6/5/2020
by Anonymous
Overall Rating
Good performance !

Work perfect with my groupset !

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Reviewed 5/29/2020
by Anonymous
Competitive Racer
Huntsville, AL
Value Rating
Overall Rating
3 of 3 customers found this review helpful.
Does what it's supposed to

Nothing overly special. It's a cassette that works well. Shifting is smooth and cassette is quiet in operation. I am using a KMC X11SL chain with no problems. I've had Dura-Ace cassettes and from a functionality standpoint there is no difference with the Ultegra cassettes.

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Reviewed 1/21/2021
by Bill
Cycling Enthusiast
West Cola.S C
Value Rating
Overall Rating
shimano products are the best

Shimano ultegra is the best without the high price

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Reviewed 1/15/2021
by Anonymous
Windsor
Overall Rating
The best

Simply the best bang for your money. Dura Ace weight savings not worth the price difference.

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Reviewed 12/18/2020
by Anonymous
Cycling Enthusiast
Value Rating
Overall Rating
Great upgrade from 105

Compared to 105, this cassette is lighter and offers smoother shifting. Very happy and I got a great deal. BTD shipped super fast!

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Reviewed 11/27/2020
by Mark
BWI
Overall Rating
1 of 1 customers found this review helpful.
Great range of gears. Shifts smoothly!

Cassette 11-30 used with Durace di2 9000.

The cassette shifts great. Just a little heavy. But is a great price. And yes, the 30 tooth cog works!

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