Ok so I'm thinking about upgrading to a SLX drivetrain, and I currently have a Shimano Deore Xt 2x10 on my Devinci Troy. The question is whether it is even worth it cause the cassette may be too wide for my chain/seat stay triangle. Definitely need the upgrade as I do enduro riding and the 2x10 is a hassle. Never done this before. I can also just get a new chainring up front and a bigger range 10 cog cassette in the back, but I would like to go to something a lot nicer.

  • Do you mean the 7000 SLX? If so, the 11 and 10 MTB Shimano cassettes have the same width and mount on the same HG freehub body. Jan 16, 2018 at 2:19
  • Yes, they are both shimano, and yeah the 7000 slx. Jan 17, 2018 at 4:13

1 Answer 1


With 11 speed cassettes the compatibility issue is not the width of the dropouts or rear hub, it's will the cassette fit on the freehub body. Some 11 speed systems require a slightly longer freehub body to fit onto.

Shimano MTB 11 speed cassettes will fit onto the same freehub body as a 10 speed (which is actually the Shimano 'Hyperglide' freehub standard that has been in use for decades). It manages this by having closer sprocket spacing and overhanging the back of the freehub body somewhat. The overhang is possible because the large low gear sprockets required on 11 speed systems can clear the spokes.

  • OK thanks, that helps. Just wanted to clarify before I buy. I know I could do better with an XTR but the deal was too hard to pass. Jan 17, 2018 at 4:13

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