This Shimano XT M8100 12-Speed is specially designed for the 12-speed Shimano MTB cranks. This blade is relatively light, stiff and has specially designed teeth to allow the chain to run optimally. These chainrings are mounted directly on the crank, which is called Direct-Mount. This mounting makes it easier to switch between chainrings, so that you can set the right gear for every circumstance.
This Shimano XT M8100 12-Speed is specially designed for the 12-speed Shimano MTB cranks. This blade is relatively light, stiff and has specially designed teeth to allow the chain to run optimally. These chainrings are mounted directly on the crank, which is called Direct-Mount. This mounting makes it easier to switch between chainrings, so that you can set the right gear for every circumstance.
This Shimano XT M8100 12-Speed is specially designed for the 12-speed Shimano MTB cranks. This blade is relatively light, stiff and has specially designed teeth to allow the chain to run optimally. These chainrings are mounted directly on the crank, which is called Direct-Mount. This mounting makes it easier to switch between chainrings, so that you can set the right gear for every circumstance.
This Shimano XT M8100 12-Speed is specially designed for the 12-speed Shimano MTB cranks. This blade is relatively light, stiff and has specially designed teeth to allow the chain to run optimally. These chainrings are mounted directly on the crank, which is called Direct-Mount. This mounting makes it easier to switch between chainrings, so that you can set the right gear for every circumstance.
Last updated at 05/11/2026 07:24:17
Shimano Chainring XT SM-CRM85 for FC-M8100-1/8120-1/8130-1 12-Speed 30T
Shimano XT M8100 SM-CRM85 chainring Teeth 30
Delivery between Tue – Wed $40.73
Shimano SM-CRM85 XT Chainring, 30T
Delivery between 13–22 May $12.94
Shimano SM-CRM85 Chainring 30T Deore XT 12-Speed
Delivery between 12–22 May $12.95
Shimano XT SM-CRM85 Chainring 30T FC-M8100/M8120/M8130
Delivery between 12–19 May $9.99
Shimano XT SM-CRM85 Chainring 30T FC-M8100/M8120/M8130
14-day returns
Shimano XT FCM8100 / FCM8130 1x12v plate - 30
Delivery $65.99
Shimano XT SM-CRM85 30T 12sp Chainring (for FC-M8100/ M8120/ M8130)
Delivery between 13–18 May $9.90
SHIMANO - SM-CRM85 FC-M8100-1 Chainring Deore XT Black 12s 30T
Delivery $50
Shimano Deore Xt Crm85 12 Chainring 30t 32t 34t 36t M8100 M8120 M8130
Delivery $26.32
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originally posted on jensonusa.com
Shimano doesn't make good chainrings. Myself and many others on forums have narrowed down problems with our drivetrain resulting from Shimano chain retention being too tight it cause horrible sticking and noise. Even after cleaning everything completely, you will still have issues.I would highly recommend the Wolftooth Camo chainring and the Bash Spider. Best switch ever
originally posted on cambriabike.com
Bought this to replace worn out ring. Very happy with Cambria service and the Shimano chainring performance is flawless as usual.
originally posted on moosejaw.com
I bought this XT chairing to replace my older SLX 30tooth chairing. It was super easy to install and works perfectly. I love XT parts. I think they are the best value out there!! Thank you Moosejaw for quick shipping and a great price !!
| Speed | 12 speed |
| Mount | Direct Mount |
| Compatible Chain | CN-M8100 12 speed |
| Compatible Crankset | FC-M8100-1, FC-M8120-1 and FC-M8130-1 |
| Teeth | 34t, 28t, 36t, 30t |
Shimano Chainring XT SM-CRM85 for FC-M8100-1/8120-1/8130-1 12-Speed 30T
Shimano XT M8100 SM-CRM85 chainring Teeth 30
Delivery between Tue – Wed $40.73
Shimano SM-CRM85 XT Chainring, 30T
Delivery between 13–22 May $12.94
Shimano SM-CRM85 Chainring 30T Deore XT 12-Speed
Delivery between 12–22 May $12.95
Shimano XT SM-CRM85 Chainring 30T FC-M8100/M8120/M8130
Delivery between 12–19 May $9.99
Shimano doesn't make good chainrings. Myself and many others on forums have narrowed down problems with our drivetrain resulting from Shimano chain retention being too tight it cause horrible sticking and noise. Even after cleaning everything completely, you will still have issues.I would highly recommend the Wolftooth Camo chainring and the Bash Spider. Best switch ever
Bought this to replace worn out ring. Very happy with Cambria service and the Shimano chainring performance is flawless as usual.
I bought this XT chairing to replace my older SLX 30tooth chairing. It was super easy to install and works perfectly. I love XT parts. I think they are the best value out there!! Thank you Moosejaw for quick shipping and a great price !!
Bought this with XT direct mount crank. Looks nice and performs smoothly. I did not know that the direct mount needs a new tool to install so if you are doing it yourself, buy the tool as well.
I’ve been riding my mountain bike for three years and after moving to a place that has a lot more climbing, I decided a lower gear would be a nice thing to have. My bike is equipped with Shimano XT 12 speed group set. The low gear before the chainring swap was a 32 X 51. After receiving the 30 tooth ring, I removed the crankset and took it down to the local bike shop, they swapped it out in about 5 minutes. I had to take one link out my chain to accommodate the smaller ring. Going from a 32 to a 30 doesn’t sound like much but it helps.
Looks good, works good. Nothing to see here. It's a pity that 36T size is not available only at the XT level, but that's another story :)After switching to 1x on my front, my bike became 1kg lighter. And that's a really nice additi
Typical Shimano XT quality, not much to complain about. Very high quality manufacturing, and appearance. With the steel chainwheel, it will likely last forever. Weight is 115g for my 32T version.
Less than a year into the life of this chainring and it completely exploded on me. There are little screws that attach the spider to the chainring that sheared off and caused the entire thing to fold in half. The whole design of it seems ridiculous as it’s a direct mount, should be a one piece stamped metal part and that’s it.
Perfect fit. I like the design and the color especially compared to the SLX color which has more of. Metallic blue hue. Worth the $
| Speed | 12 speed |
| Mount | Direct Mount |
| Compatible Chain | CN-M8100 12 speed |
| Compatible Crankset | FC-M8100-1, FC-M8120-1 and FC-M8130-1 |
| Teeth | 34t, 28t, 36t, 30t |
