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Shimano - Ultegra CS-R8000 Cassette

Shimano Ultegra CS-R8000 Cassette

28% Off
$59.99 - $79.99 Original price:$88.99
Changing the size selection, or changing the selected color after selecting a size, may change the associated price

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    • Gray, 11x25
      sale $59.99
    • Gray, 11x28
      sale $69.99
    • Gray, 11x30
      sale $74.99
    • Gray, 11x32
      sale $79.99
    • Gray, 12x25
      sale $64.99
    • Gray, 14x28
      sale $64.99



    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:
    Claimed Weight:
    [11x25] 232g, [11x28] 251g, [11x30] 269g, [12x25] 243g, [14x28] 300g
    Recommended Use:
    Manufacturer Warranty:
    2 years

    Ultegra CS-R8000 Cassette

    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.

    • 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

    Great Addition For Utah Canyons

    • Familiarity: I've put it through the wringer
    • Fit: True to size

    My whole drivetrain is Ultegra. This cassette went on easily and it's great having a larger gear for climbing Utah's canyons. I ratios are still great for downhill and flats. Get one

    It's Ultegra. Do it.

    • Familiarity: I've put it through the wringer
    • Fit: True to size

    Ultegra is long wearing and use it with an Ultegra chain. Runs smoothly. I've never had one break on me. If anything, they wear out over time as any metal parts wear out.

    Can't go wrong with this

    • Familiarity: I've put it through the wringer

    I use these cassettes on both my Ultegra and Dura Ace equipped bikes. Yes, the Dura Ace cassette is lighter but after breaking two DA cassettes I've decided that there is nothing fast about "broken". I'm not a huge power rider either, I just think the DA cassettes are under-built to achieve their lightness. Sure pros use them but they are getting new cassettes put on constantly. So, save yourself some money and get this Ultegra-level cassette which will shift great and not leave you stranded.

    Great cassette 11-32t

    • Familiarity: I've put it through the wringer

    Great reliable cassette at a great price. Easy to install.

    Great Value for Ultegra 11-32T

    • Familiarity: I've used it several times

    Half the price offered by my LBS. Hopefully lasts longer than first. So hope to see same value when in need of new change in 5-6 months.

    This is the official OLD MAN cassette

    • Familiarity: I've used it several times

    The basics: the cassette shifts nicely, like I expect from Shimano. The obvious trade-off from a 27 or 28 is the spread between various gears. The huge upside for my old arse is the lower end, climbing a 10% or whatever grade. Going from a 28 will likely only require adjusting the derailleur stop screw.

    As Advertised

    • Familiarity: I've used it once or twice and have initial impressions

    I love how Competitive Cyclist always has quality components and clothing at competitive prices. Though I should have pulled the trigger a week prior because it was even less, I still felt that I received the best deal at the time from all of their competitors. This cassette will be a match for my new Enve 3.4 disc wheels, to match my current stock wheel/cassette combo.

    Works great, training & racing (11-25)

    • Familiarity: I've put it through the wringer

    Bought two, to have one on the indoor trainer rear wheel and, one for road rides rear wheel setup. Hard to beat for the price and the mid level weight, compared to dura-ace or Sram XD at three times the cost for only 50-70 grams less, save those for race day! Can usually get 2-3 chains worth of life out of one rear cassette and set of front chain rings, then again, I clean my drive line after every ride and lube it, makes a huge difference in life of chain, gears, and how bike shifts.


    • Familiarity: I've used it several times

    I have these combined with Shimano Ultegra SM-RT800 Disc Rotor on my Reynolds 58/62 Carbon Disc Wheelset and appreciate the performance when all combined.

    Ultergra FTW

    • Familiarity: I've put it through the wringer

    Super durable, fairly lightweight, and a bunch of ratios. This cassette always gets the nod when I'm in need.

    Ultegra never disappoints

      Smooth cassette at a nice weight. It's nice it comes in a 11-30. Nice bang for the buck too!

      smooth as butter

      • Familiarity: I've put it through the wringer

      Smooth precise shifting. Purchased 11-25 to replace 11-21 for middle-gear range benefits. Ultegra - highest quality cassette with probably a little more durability than Dura Ace. (Obviously, a little heavier)

      Shimano cassette

      • Familiarity: I've used it several times

      This cassette is very light and works great with my r8000 derailleur. I'm running a 11-28 cassette with a 50/34 crank.

      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.