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Shimano Ultegra CS-R8000 Cassette

Sale $64.95 - $69.95 22% Off

Item # SHI00FZ

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  • Gray, 11x25 ($64.95)
  • Gray, 11x28 ($64.95)
  • Gray, 11x30 ($69.95)
  • Gray, 11x32 ($69.95)
  • Gray, 12x25 ($69.95)
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Item # SHI00FZ

Description

Just a cog in the wheel.

Shimano's Ultegra group is one of the most popular out there with good reason: it's the perennial favorite when you factor the performance-to-dollars equation. With different demands for drivetrain ranges required for road, gravel, and CX riding, Shimano has created cassette ranges designed to allow the R8000 drivetrain to easily satisfy the needs for a variety of riders. The Ultegra CS-R8000 Cassette ranges as high as 32t, so you can set up the new Ultegra (or Dura-Ace R9100) with the range you need for gravel epics, 4 corner crits, hill climbs, junior nationals, and everything in-between.

Shimano's experience in forging, machining, and engineering allows for an enormous amount of technology that goes into tooth design, shaping, and shifting ramps. The cogs themselves are constructed from a nickel-plated steel that prevents corrosion and is slow to wear. Ultimately this leads to cassettes that shift smoother and more precisely—and last longer—at a price that's friendly to the self-sponsored racer.

The top five cogs are grouped as three and two, respectively, and are riveted to anodized aluminum spiders that add stiffness to improve shifting. The remaining six cogs are individual with spacers between, and an anodized aluminum lockring screws into the freehub to hold the entire assembly together. One spline of the cassette is wider than the others and corresponds with the splines on the freehub, so the cassette cogs can only be installed with the right clocking of the shifting ramps, timing them for perfect chain pick-up and release. This innovation is true to Shimano's Japanese culture, which uses the term "poka-yoke" to refer to features—like these guiding splines—that serve as built-in wards against user error.

Shimano Ultegra cassettes shift so well and are so unnoticeable that even World Tour teams will often sub Ultegra cassettes to get the bikes to the minimum weight limit. Frames and wheels are just so light these days, and adding mass to the cassettes isn't too detrimental to performance, and the Ultegra units shift on par with Dura Ace while actually lasting much longer.

Please note that the new Ultegra RD-R8000 Shadow Rear Derailleur comes in two sizes, short and long cage. Cassettes up to 11-30t are compatible with the short version, while 30t cogs and up require the longer model.

  • Long-lasting racing cogs for the self-sponsored cyclist
  • Reliable, durable steel preforms like Dura-Ace plus a few grams
  • Precisely machined ramps allow for accurate 11-speed shifting
  • Ranges available for crits to climbs to gravel grinds
  • Shimano's Ultegra R8000 drivetrain leads the way for best value in the industry

Tech Specs

Cog Sizes:
11 x 25t, 11 x 28t, 11 x 30t, 11 x 32t, 12 x 25t, 14 x 28t
Cog Material:
nickle-plated steel
Carrier Material:
aluminum
Recommended Use:
cycling
Manufacturer Warranty:
2 years

Weight

Weight

Actual Weight

Actual weights are measured in-house by the Competitive Cyclist team.

Have questions? Chat with a Gearhead

Grams

Oz

Gray, 11x25
223g
7.87oz
Gray, 11x28
242g
8.54oz
Gray, 11x30
271g
9.56oz
Gray, 11x32
287g
10.12oz
Gray, 12x25
n/a
n/a

Claimed Weight

Claimed weights are provided by the vendor.

Have questions? Chat with a Gearhead

[11x25] 232g, [11x28] 251g, [11x30] 269g, [12x25] 243g, [14x28] 300g

Reviews & Community

REVIEWS

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Light, Durable and Quiet

  • Familiarity: I've put it through the wringer

Perfect cassette for the money. Running 11-28 with SRAM Etap and DuraAce Chain. Crisp, precise shifting and seems to run a tad quieter than its 6800 counterpart.

Weight Savings!

  • Familiarity: I've put it through the wringer

I upgraded my 105 5800 to the new Ultegra R8000, and purchased the 11-28 cassette to match my new short cage derailleur. Coming from an 11-32 105 cassette, this upgrade to Ultegra earned me a 60 gram savings! Ultegra 11-28 cassette weighed 246 grams on my PT scale.

A follow up question. Can a 11 30 cassette be used with a short cage 6800 Di2

No. 11-28 is the max range for the short cage

i currently run an 11-30 on my Di2.

the cross chain can cause issue but i haven't had issue whine's paying attend to its been fine for over a year...... that being said its not recommended

For those with the newer ultegra R8000-SS rear mech in now fits up to 11-30t.

I need to replace my 11-28 6800 cassette and chain. Is the R8000 compatible

Absolutely. R8000 cassette and chain are compatible with the older Ultegra 6800 groupset. Please let me know if you have any further questions. igonder@backcountry.com or direct line 801-619-7476

Unanswered Question

Will the 11-28 work with DA 9000?

Finally... a 32!

  • Familiarity: I've used it several times

I gave this cassette as a gift to a family member who was really looking for a little bit more to help climb the canyons around us. Installing is the same as all Shimano cassettes, and the shifting is smooth and crisp! She is extremely happy knowing that she can run the R8000 cassette with her existing 6800, and is now able to go climb the roads just in time for fall.
If you have any questions on the new R8000 gear, please reach out to me.