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Shimano XTR CS-M9000 11-speed Cassette

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Item # SHI003A

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Item # SHI003A

Finally, this one goes to 11, too.

Shimano's all-new XTR groupset sees a swarm of huge refinements descend upon the legendary groupset, and one of the stars of the new show is the Shimano XTR CS-M9000 11-speed Cassette. The cassette features an intricate, computer-designed layout of its teeth and shift gates, because Shimano understands that smooth shifting is key to maintaining your rhythm on the trail. Four separate carbon fiber carriers support 11 nickel-plated cogs spread between 11 and 40 teeth. The 35, 31, 27, 24, 21, and 19 cogs are made of titanium to reduce weight and increase durability, and all 11 cogs are heavily machined and drilled to minimize grams without compromising rigidity.

The Shimano XTR CS-M9000 11-speed Cassette is available in only one size (11-40t) and one finish, and Shimano very strongly advises using its 11-speed specific SIL-TEC chain for best performance.

  • Carbon fiber carrier
  • Use with Shimano’s 11-speed SIL-TEC chain
  • Compatible with XTR 11-speed shifters

Tech Specs

Cog Sizes:
11 - 40 t
Cog Material:
[11, 13, 15, 17, 40] steel, [19, 21, 24, 27, 31, 35] titanium
Carrier Material:
carbon fiber
Claimed Weight:
331 g
Recommended Use:
mountain biking
Manufacturer Warranty:
3 years

Reviews & Community


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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.

Thing of Beauty

  • Familiarity: I've put it through the wringer

Shimano hit it out of the park combining Carbon and Metal. Carbon keeps it light and stiff on the carrier, and the metal lets you ride. The beauty gets quickly hidden when you install it on a freehub, but you know it's there. This cassette installs and a standard freehub body without the need of a new version like SRAM does. The down side is you lose the top and bottom gear compared to SRAMs 10-42 with the XTR 11-40 offering. If you want an easier gear, hop down to the heavier XT cassette. if you need the 10 and the 42, I've had good results running a SRAM 11 cassette on my XT and XTR bikes.

Middling performance from a high end par

  • Familiarity: I've put it through the wringer

I've been riding this cassette for about 1000 miles and am ambivalent about its performance. Shimano insists on their .13 gear ramping being perfect for mountain biking and I just don't agree. The range is too tightly spaced and doesn't feel as natural as what SRAM is putting out on their 10:42 offerings. I expected to like my XTR 1x11 setup but find it's just been less reliable and doesn't offer the same consistency I got with my 2x10 XT setup. Shifting isn't as crisp and I get persistent skipping, neither of which I expected in a flagship parts group. Overall I'd suggest either saving money with XT 8000 or spending more to get a SRAM drivetrain.

Well Geared

  • Familiarity: I've put it through the wringer

This cassette allows for nice even feeling steps when shifting from cog to cog. If you are running a 1 x10 conversion you'll notice that there are some gaps in the gears (the feeling like you are between gears). If you are concerned about cost or if you need a 42T tooth, wait for the XT 8000 to be released and then upgrade.

Well Geared

Parts are slowly trickling in so hopefully soon. You can contact Backcountry.com and they can tell you when they might be expecting a shipment.

Looks like the XT 8000 cassette is available now in both the 11-40 and 11-42.

Does this cassette need a specific hub? Or can it be used on a normal Shimano hub?

It is compatible with standard 10 speed Shimano freehub, with no special driver body needed. You will need to run a 11 speed chain.

Is the XTR 11-speed cassette compatible with a SRAM shifter/derailleur combo?

We have heard of quite a few people interchanging the cassettes and haven?t yet heard a complaint. Several of the people are industry guys that have been on it over a year. You should be good to use the Shimano cassette on the Sram group.