Shimano Deore CS-M5100 11-Speed Cassette
Ride anywhere with smooth and precise HG shifting of the Shimano Deore CS-M5100 11-speed cassette. Rider Tuned gear steps offer maximum cadence control across the varied terrain of mountain biking.
- HG (Hyperglide) technology guides the chain (not included) quickly and directly from one cog to the next without override
- Cogs range from 11 to 51 teeth, with close steps from 11 to 42 teeth to promote smooth, comfortable pedaling
- Perfect for front single and double MTB drivetrains
Imported.
View the Shimano Deore Product LineView all Shimano Bike Cassettes| Best Use | Mountain Biking |
|---|---|
| Material(s) | Steel |
| Speeds | 11-speed |
| Compatible Freehub | Shimano Hyperglide (HG) |
| Weight | Unavailable |
Review this Product
Adding a review will require a valid email for verification
Customer Images
Great 1x11 upgrade
I upgraded an old bike that used to have a 9-speed free hub cassette with this one along with the matching RD-M5100 derailleur and M5100 crankset plus the M5100 shifter. Everything works together very smoothly. I don't even hear the usual chain whirr. Gear shifts are effortless and quick, though they do take a bit more time with the lowest gears. Be sure to set up the derailleur correctly. Without a spoke protector behind the lowest gear, the chain could fall off and get stuck between the cassette and the spokes damaging them if the limit is not set up correctly. Also, since the 51-tooth sprocket is gigantic, there is very little clearance between the derailleur pulley and the cogs so setting up the B screw is also super important. The 51T sprocket is more than enough for climbing, or for easily doing wheelies like my son likes to, even with the 1x11 setup that we have now.
Fantastic Value Upgrade!
This review is about the Shimano M5100 group set as a whole. I made my first foray into mountain biking a few months ago with the purchase of a gently used Orbea MX50 mountain bike. It came with a Shimano Atlus 3x8 group set (3 gears/cogs in front, 8 gears/cogs in back for those as new to this as I recently was). This group set has been a HUGE upgrade. I switched everything to 1x11 which required buying a new crank, sprocket, chain, derailleur, annd shifter. I have plenty of gear range and it is SO MUCH more functional. This group set has really changed my bike for the better! Keep in mind you will probably need to buy some special tools, grease, etc. I did the upgrade myself and it’s pretty involved but if you’re mechanical, it’s definitely a job that can be done in a basement or garage. No regrets at all!
Great upgrade - required extra spacer
I purchased this as a part of the complete Shimano M5100 drivetrain. I upgraded to this from the stock 2x8 drivetrain that came stock on my Cannodale Trail 7 (also purchased from REI). So far I have put 165 miles on the M5100 drivetrain - all on dirt XC trails. Overall, this was a great upgrade and really improved my entry-level trail bike. Between installing this 1x11 and a dropper post, I'm getting a lot more enjoyment out of my Cannondale Trail 7. This drivetrain is WAY quieter than my old 2x, and I don't think I've had my chain come off even once. The gearing is also much better for the kind of XC riding that I do regularly. I will note one important caveat with this drivetrain. Apparently, there is some kind of compatibility issue with this cassette and some rear hubs (mine is WTB). Basically, the independent cogs on the cassette aren't held firmly into place and will rattle around once you ride for a while. This becomes extremely noisy, and can actually cause damage and imprecise shifting. Other people have noted this issue on forums - and I saw two issues speculated as the cause. One was that stock Deore cassette lockring does not have enough threads. The other is that the cassette needs an additional spacer between the hub and cassette. I troubleshooted with a lockring, as well as an additional 1.85mm spacer between the hub and cassette. I found that the issue was indeed a need for an additional spacer. Adding this resolved the issue with loose cogs on my WTB hub. Apart from that initial problem with loose cogs, I give this cassette a thumbs up. For me, this was a very cost-effective upgrade/