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Shimano XT CS-M8000 Cassette
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Item # SHI007V

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  • Silver, 11-40 ($65.11)
  • Silver, 11-42 ($64.37)
  • Silver, 11-46 ($78.39)
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Item # SHI007V


Wheel fast.

Keep your wheels rolling down the trail with the Shimano XT CS-M8000 Cassette. Packed with 11 gears of fun, this cassette features a combination of aluminum and steel cogs to keep weight down while staying tough enough to handle all the torque you can throw at it.

While the XT cassette holds onto a little bit of extra weight compared to its XTR sibling, the CS-M8000 stands out as a perfect choice for riders looking for top-level quality at a more affordable price point. Shimano engineers this cassette with rhythm step gear progression, ensuring precise shifting every time to eliminate pesky distractions such as ghost or missed shifts out on the mountain.

The Shimano XT CS-M8000 Cassette is available in two sizes to accommodate differing ride styles and needs, and the enormous 40, 42, or 46t cogs are knee-savers with one-by drivetrains. Both the 11-40t and 11-42t options feature a wide cassette sprocket and optimized gear steps to move the chain smoothly across their ranges and get you smoothly across varied terrain.

  • A cassette that solves the budget vs bling conundrum
  • Blend of aluminum and steel cogs sheds weight where possible
  • Gearing increments ensure you've always got the right gear
  • Compatible with Shimano or SRAM 11-speed drivetrains

Tech Specs

Cog Sizes:
11 - 40t, 11 - 42t, 11 - 46t
Cog Material:
aluminum and steel
Hub Type:
Shimano or SRAM 11-speed Compatible
Recommended Use:
mountain bike
Manufacturer Warranty:
2 years

Reviews & Community


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  • Familiarity: I've used it several times

What a great cassette ,durable great price what also you can ask...

Reliable, seems to be long wearing

  • Familiarity: I've put it through the wringer

Reliable, even wear, works with any 11 speed chain. 12 speed would be great but this is a tremendous value.

46 was what I needed

  • Familiarity: I've put it through the wringer

The 46 tooth is just enough of a granny to make almost any climb doable.
switched from a 42 tooth and it was a great choice.

Shimano value and quality-thumbs up

  • Familiarity: I've put it through the wringer

The shear volume of great reviews on the XT lineup speaks for itself. I'm running an XT 1x11 (46t) drivetrain and love it. Yes, there is a pretty large jump between the 37t and 46t granny gear but its nothing that's gonna ruin your ride. The 46t cassette I bought is the most cost effective drivetrain upgrade out there. You can retrofit your 10spd HG freehubed bike into an 11 spd 1x gear monster with just a shifter, cassette and chainring...that's all you need. Yes, there are prettier, shinier, more goldier cassette options out there, but for shear bang-for-the-buck upgrades, nothing beats the XT drivetrain. Good stuff to get your goods going.

Good but cheap 1X11 solution

  • Familiarity: I've put it through the wringer

This is great solution for anyone who wants a good but cheap 1X11 solution. Shimano cassette is made of great materials/construction, crisp, and effortless shifts. This cassette it does the job well, like shimano XT components typically do.

Great componentry

  • Familiarity: I've used it several times

Shimano makes the best the 42T (up from the XTR 40T). Smooth shifting, easy install, etc. Run a Shimano chain w/quick link.

The Workhorse Groupset

  • Familiarity: I've put it through the wringer

I think that the XT groupset is one of the best you can buy at this point. They are fairly light, very reliable, and will last forever. Not to mention, it's super affordable! Easy to install and also really easy to maintain. Might not be the ultra light race set up you want, but is just flat out reliable.

Best Cassette for my Bike

  • Familiarity: I've used it several times

This was the best thing I could have done for my Surly Krampus. The stock 1 x 10 was tough to use for climbing. When I switched to 1 x 11 it helped tremendously for climbing and extended the amount of time I could spend on my bike. There is just barely enough clearance with my plus sized tires (29 x 3). The bike Gearheads really helped me in getting the right set up. Consulting them before buying may really save you a lot of time and frustration for your next set up.

That's a big cog you got there.

  • Familiarity: I've put it through the wringer

Who would have thought that one day the large cog would be bigger than your brake rotor. I was skeptical of 1x for a long time but riding it on a long bikepack in Baja made me a believer. The jumps between gears are a bit big in some cases but the shifting is smooth and the low end gearing is great for hauling a loaded bike up long mountain passes

the gearing you've always wanted

  • Familiarity: I've put it through the wringer

I bought my wife the 11-46 because she excels at downhill riding far more than the uphill stuff. Now she can climb anything. Compatibility questions? Hit me up at

11-46 has big jump on the low end...

  • Familiarity: I've used it several times

See my prior shimano just works. That said, the 11-46 leaves me a little puzzled. Bought it for a new bikepacking rig set up 1x--that is, a bike I'm going to lash a bunch of stuff too, up to 20lbs of water at a time and go ride singletrack for a few days on end... As such, I'll spend a fair amount of time twiddling between climbing gears and I find myself missing a 42ish gear... The 46 bailout is great. But the next step is 37. For regular mountaing biking or flatlanders wanting a bailout gear, this is probably great as it maintains a nice spread across all the other 10 gears. But for my intended use in the rocky mountain west, I could ditch the 11t in exchange for more choices for climbing.


  • Familiarity: I've put it through the wringer

I really like this Shimano 11 speed i bought two cassette one XT 11-46 for my Warden and SLX 11-42 for my other bike to upgrade from 10 speed.. Instead i modify the 11-46. disassemble 11-42 and added the 42 teeth to 11-46 .. 'Just for fun' and so far so good cassette is working just fine...


Soooo Pat ... are you sayin' you made the 11 speed 11-46 into a 12 speed by adding the 42 teeth to it?? How so?

Hi William,
Sorry for late reply.. Cassette still 11 speed, i did removed the 17t and what i have right now is 11-13-15-19-21-24-28-32-37-42-46.

Finish Needs Improvement

  • Familiarity: I've put it through the wringer

Works great but the finish could stand to be a bit more durable or just make it all one color (cosmetic).

Avg. ride time: 39m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Great cassette

  • Familiarity: I've put it through the wringer

Love the upgrade to 11 speed, and this helped complete the setup. Nothing too exciting about a cassette, but this one does its job well, and doesn't require changing out the freehub body

1 X 11 Upgrade

  • Familiarity: I've used it several times

I have been making my own 1 x 10 systems for a few years now with XT cassettes and a wolf tooth 42t. Finally decided to upgrade to a 1 x 11 system using the XT 46t.

The Shimano XT systems never fail. You may add a few grams of weight over the XTR, but for half the price you can't go wrong with XT. The entire XT product line is bullet proof.

1 X 11 Upgrade
Avg. ride time: 4h 56m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Excelent price-quality-durability ratio

  • Familiarity: I've put it through the wringer

I´ve been using a mix of Shimano 1X11 for 3000 Km (Rear derailleur and shifter XTR M9000, Crank, Chain and Cassette 11-42 XT M8000) and it has working flawlessly, shifting is smooth and quick, even under load on step climbs, So now that my cassette is coming to the end of its life I will stick with this mix. Now shimano relases the 11-46 cassette, I would love to purchase one on this range to increase the number of teeth in my front chainring and gain speed, but would the 11-46 work with XTR RD-M9000 Medium Cage Rear shifter?

The large cage is for 2x and 3x front sprockets where more chain length is needed and the longer cage is used to soak up some of that extra length of chain. I just purchased the 46t set up and the medium cage.

Great product for a great price!

    Picked this up for my new Yeti SB6 build, its the middle of winter here in Park City so I haven't been able to put some miles on it yet. So far it feels great and I'm excited to rip around come spring time!

    Cost effective 11 speed

    • Familiarity: I've used it several times

    If you are looking to upgrade your bike to 11 speed and don't want to or can't get an XD driver for your wheelset, this is the way to go. Have had great success with running it with either Shimano or Sram rear derailleurs.

    Not Eagle range..but way more economical

    • Familiarity: I've put it through the wringer

    I was an early adopter of 1x tech. And with the right chainring, I can get the range I need for almost a 100% of my riding. That said, bikepacking, snow biking and epic long rides find me desiring a little more range (usually reserved for a bail out gear--climbing). As a shimano fan (I've got X0 too) I've used mods on 10 speed to get a wide range rear. And this past year, I used a mod to put a 50t on my shimano 11x42. But--that ramps are so spread out on the 50t that you sometimes notice the delay in the chain jumping up to 50t ring (as it waits to find the ramp--only four on a 50t). Enter--the shimano 11x46t wide range cassette. Its not quite 50t or Eagle but its a fraction of the cost, full shimano manufacturing magic (meaning it will just work) and no aftermarket do-dads to buy and fiddle with to install. This one went on my full suspension XC rig for the epic big mileage days we sometimes do here so I'll be able to granny down on those late day monster climbs.

    Does the job!!!

    • Familiarity: I've put it through the wringer

    I bought this after Shae( She is great) from the bike dept at backcountry recommend it as part of the parts ( Race Face Narrow Wide Chainring, Shimano CN-HG600 11-Speed Chain,Shimano XT RD-M8000 Rear Derailleur, Shimano XT SL-M8000 RapidFire Trigger) to convert my baby (2016 Santa Cruz Heckler) to a 1 x 11. After a 100 miles the cassette is doing great. I got the 11-42 with a 32T chain ring and so far i can climb anything here in Jersey. The cassette is on the heavy but that was not a concern for me. I could not be happier; all done at a very reasonable price. My only regret is that i did not changed sooner to a 1 x11