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12-25T
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12-25T
Shimano Ultegra CS-R8000 11 Speed Cassette
Shimano Ultegra CS-R8000 11 Speed Cassette

Shimano
Ultegra CS-R8000 11 Speed Cassette

Mfg PartNum:
$82.99-$88.99
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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.
 

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 

Ordered by Most Relevant First
5 stars
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(30)
(6)
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(83%)
(17%)
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32t is just that little extra
by GDS PDX
Cycling Enthusiast
Portland, Oregon

I got a set of climbing specific wheels and wanted a cassette that would leverage that even further. The 32-11 was a good call. I really don't use the 32 that often (most climbs are fine with the 30) but when you hit a wall and need just a little more leverage and a little more confidence, the 32 is nice to have. I was worried about chain length because my other wheelset has a 30-11, but I have had no problem. If I was moving from a 28 to a 32, I'd probably need an extra link or two, but the 30-32 switch has performed fine on an Ultergra Di2 longcage derailleur.

Reviewed 5/21/2020
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Much better than 6800
by EnriqueC
Cycling Enthusiast
Near Memphis TN

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.

Reviewed 6/15/2020
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Good performance !
by Anonymous

Work perfect with my groupset !

Reviewed 6/5/2020
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THE RIGHT PRICE FOR GOOD VALUE
by THE BRAD
Cycling Enthusiast
ST. LOUIS, MO

I LOVE THE CASSETTE AND SHIMANO HAS BEEN EXCELLENT DRIVE TRAIN FOR ME SINCE 1986

Reviewed 5/28/2020
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Does what it's supposed to
by Anonymous
Competitive Racer
Huntsville, AL

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.

Reviewed 5/29/2020
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Ultegra Quality
by ShayneB
Louisville, KY

Solid cassette at a great price. Installed on a new wheelset. Shifting is smooth and precise. Does everything it is designed to do well.

Reviewed 9/20/2018
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by good Shop
Cycling Enthusiast
good Shop
0 of 1 customers found this review helpful.

good Shop

Reviewed 12/10/2019
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by good Shop
Cycling Enthusiast
good Shop
0 of 1 customers found this review helpful.

good Shop

Reviewed 12/10/2019
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by good Shop
Cycling Enthusiast
good Shop
0 of 1 customers found this review helpful.

good Shop

Reviewed 12/10/2019
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Just great!
by Anonymous
2 of 2 customers found this review helpful.

Best for uphill.

Reviewed 11/28/2019
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awesome
by Aaron
Cycling Enthusiast
1 of 1 customers found this review helpful.

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

Reviewed 12/6/2018
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No drop off from DuraAce
by Gwpelham
Cycling Enthusiast
Northern Nevada
1 of 1 customers found this review helpful.

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

Reviewed 9/17/2018
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Smooth shifting
by Cat6Junior
Competitive Racer
Georgia
2 of 2 customers found this review helpful.

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.

Reviewed 9/11/2018
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50 miles a week
by Anonymous
Nashville
1 of 1 customers found this review helpful.

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.

Reviewed 9/14/2018
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Great range of gears at a good price.
by Merlin
Cycling Enthusiast
Portland, OR
2 of 2 customers found this review helpful.

I wanted the wide gear range available in this cassette and also was glad I could get it at a decent price. I have one of these on another bike and it has lasted a very long time. This one should also last a long time. This is a very good cassette that I'll buy again if the need arises.

Reviewed 6/3/2019
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ongoing maintenance
by Anonymous
Cycling Enthusiast

started to have poor shifting while on the trainer and realized lubrication was not the issue. Worn cassette and idler wheels were actually the culprits. Installed new cassette and idlers-voila! problems solved

Reviewed 1/21/2019
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Great product that I use on all my bikes
by Anonymous
Competitive Racer
0 of 2 customers found this review helpful.

Shimano Ultegra is installed on all my bikes. Never fails me.

Reviewed 1/6/2019
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Shimano, need I say more?
by Anonymous
Cycling Enthusiast
NC

Fitted on my trainer seamlessly. Duplicates my road bike.

Reviewed 12/15/2018
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Fast delivery.
by Anonymous
Competitive Racer

The cassette is lighter than the 105 version and feels like it delivers smoother shifting. Not as light as Dura Ace but more durable and more value for the money spent.

Reviewed 11/29/2018
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Reliable smooth shifts
by Jalan
NewEnglad

Have these on two road bikes. Cannondale Evo Hi Mods- one with DI2 and the other with Dura Ace year. Pretty simple works well all the time with both set ups. Minor weight penalty vs DA cassette but not noticeable. Have one less adult beverage and you made up the weight difference.

Reviewed 11/5/2018
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