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  • Shimano XTR M9000 SM-CRM91 1x Chainring
  • OptionsShimano -
ShimanoXTR M9000 SM-CRM91 1x Chainring
$129.99

Item # SHI00HM

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  • Black, 30T ($129.99)
  • Black, 32T ($129.99)
  • Black, 34T ($129.99)
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Item # SHI00HM
Description

Kiss the Ring.

Shimano might not be all-in on the 1x movement, but thankfully the Japanese giant does craft product for those of us who prefer the simplicity of a drivetrain with a single chainring. The XTR M9000 SM-CRM91 1x chainring marries Shimano's top-tier XTR crankset with the most precise, smoothest shifting groupset on the trail. Resist the urge to bastardize your otherwise full-XTR build with a third-party vendor and stick with the exactness that can only come from a group engineered in total unison. The same carbon-reinforced titanium construction found on Shimano's flagship rings brings you excellent durability and lightweight performance. The biggest change is in the tooth shapes, which differ slightly from their shifting counterparts. They're custom designed to grab at the inner plates of the chain and work simultaneously with modern clutch rear derailleurs to keep your chain on the ring not matter how rough the trail gets.

  • Shimano's 1x offering for its top-tier group
  • Carbon-reinforced titanium body is light ans stiff
  • Specially shaped teeth retain the chain on rough terrain
  • Compatible with Shimano XTR M9000 crank arms
Tech SpecsWeight
Tech Specs
Material
carbon-reinforced titanium alloy
Number of Rings
1
Teeth
30, 32, 34t
Bolt Circle Diameter
96mm
Connection
chainring bolts
Compatible Components
Shimano XTR cranks
Recommended Use
mountain biking
Manufacturer Warranty
3 years
Weight

Actual Weight

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

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Grams

Oz

Black, 30T
41g
1.45oz
Black, 32T
50g
1.76oz
Black, 34T
66g
2.33oz

Claimed Weight

Claimed weights are provided by the vendor.

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[32t] 78g

Reviews & Community

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Not impressed

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

As far as I'm concerned, the XTR 9000/9020 crankset is the very best mountain bike crankset ever built. They're light, stiff, impact resistant, and absolutely reliable, which is a combination of factors that places them miles ahead of any carbon fiber crank arm, at least for those of us who are prone to crank arm strikes. Unlike the crank arms, this chainring is super flimsy. Mine bent almost immediately, and I still genuinely have no idea what I hit. That's not terribly surprising though, as I've had the same experience with these composite-reinforced Shimano 1x rings in the past. They just don't seem to hold up.

So for those of you running a 1x drivetrain, keep your superior Shimano crankset, but pass on this chainring and get a Wolf Tooth instead. You can thank me later.