Description Backorder: This item is currently not in stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.
Rhythm rider.
Shimano's 11-speed XT CS-M8000 features the Rhythm Step gear progression that made its debut on Shimano's top-of-the-line XTR groupset. With these close-step gear ratios calculated in conjunction with Shimano's 11-speed XT cranksets, you'll find smooth transitions from gear-to-gear that keep you climbing and charging without a hitch. The largest cog and spider are made from aluminum to maintain a low weight while the rest of the cogs are made from steel for the strength and durability that Deore XT is known for.
Compatible with Shimano / SRAM 9/10/11-speed freehubs. Will not work with XD drivers. Approximate weight is 440 g (11-42T).
Cog sizes:
11-40: 11, 13, 15, 17, 19, 21, 24, 27, 31, 35, 40
11-42: 11, 13, 15, 17, 19, 21, 24, 28. 32, 37, 42
11-46: 11, 13, 15, 17, 19, 21, 24, 28, 32, 37, 46
Note: 11-46 cassettes are compatible with 1x drivetrains only. If switching from a smaller range cassette, a new chain will likely be required in order to accommodate the larger 46T cog. Compatible replacements include the Shimano XT HG701 Chain and the XTR HG901 Chain .
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
Reviews Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
Great product
0 of 1 customers found this review helpful.
I replaced a worn DuraAce cassette with the Shimano M8000 for more durability in winter months. The fit and efficiency is excellent and Ive not noticed any issues in shifting. Great recommendation for the swap by Seth! Thanks again!
Reviewed 10/19/2017
Was this review useful to you?
Yes /
No Thank you for your feedback.
The stock GRX 815 gearing wasn't cutting it
by DaveM
Santa Clarita, CA
1 of 1 customers found this review helpful.
The standard GRX gearing wasn't cutting in the areas I ride. Hills in all directions, so I started to do some research and a couple of YouTubers said they had success with this cassette and a Wolf Tooth DM. I got both, it took about 1 hour to swap on this cassette, swap in the Wolf Tooth and adjust the B tension clearance.
The shifting is superb and I have zero regrets on upgrading the GRX 815 gearing :)
Reviewed 2/16/2023
Was this review useful to you?
Yes /
No Thank you for your feedback.
11-40 works with GRX 810 rear derailleur
by JeffL
Competitive Racer
Eugene, OR
5 of 5 customers found this review helpful.
I've got a set of bullet proof alloy DT Swiss wheels I use for bikepacking/touring on my gravel bike and I wanted an extra climbing gear for when I'm loaded with gear. Thankfully you can adjust a GRX rear derailleur to accommodate an 11-40 rear cassette.
Reviewed 11/15/2021
Was this review useful to you?
Yes /
No Thank you for your feedback.
Shifts great, very reliable
by Bill
Competitive Racer
Middle Tennessee
2 of 4 customers found this review helpful.
I use the 11-46T on my gravel bike with a 42T 1x front chainring. This cassette is reliable and shifts great.
Reviewed 12/30/2016
Was this review useful to you?
Yes /
No Thank you for your feedback.
Works well
by Anonymous
Cycling Enthusiast
Seattle wa
2 of 2 customers found this review helpful.
Installed with DI2 XT derailleur on a road bike. Does the job for 1x gearing.
Reviewed 2/15/2020
Was this review useful to you?
Yes /
No Thank you for your feedback.
Perfect Shifting
by Anonymous
Cycling Enthusiast
Pocatello, Idaho
1 of 2 customers found this review helpful.
Excellent shifting - Good price on a hard to find item.
Reviewed 9/25/2021
Was this review useful to you?
Yes /
No Thank you for your feedback.
Great upgrade for my gravel bike
by Anonymous
Cycling Enthusiast
Seattle
0 of 1 customers found this review helpful.
Use it on my gravel bike and it has made climbing with a fully loaded bike a lot easier.
Reviewed 7/18/2021
Was this review useful to you?
Yes /
No Thank you for your feedback.
Articles Articles will open in new tab.
Comparing bottom bracket types and standards.
You wanna go fast? Join the ceramic revolution!
Keep things running smoothly on your road, mountain, or commuter bike.
Make your upgrades count. Here's the equipment that will help you ride your bike faster.
Campagnolo vs. Shimano vs. SRAM: demystifying groupsets.
What to consider when selecting a crankset for your road bike.