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Shimano Deore CS-M5100 11-51T Cassette

What the checker says106will not fit18check before you buy

Run variant by variant through the mountain bike builder’s own engine. Every sentence below is the checker’s, unedited. Nothing here says this part fits your bike; it says what it does and does not fit among the parts we hold.

Checked against 6114 verified mountain bike parts in this catalog. 5348 produced no finding of any kind.

Will not fit

  • Will not fiterror · Rear WheelFreehub mismatch: Shimano Deore CS-M5100 11-51T needs a Shimano HG freehub, but Rear wheel has SRAM XD. On 239 of the 607 verified rear wheels in this catalog.
  • Will not fiterror · Rear WheelFreehub mismatch: Shimano Deore CS-M5100 11-51T needs a Shimano HG freehub, but Rear wheel has Shimano Micro Spline. On 212 of the 607 verified rear wheels in this catalog.
  • Will not fiterror · Rear HubFreehub mismatch: Shimano Deore CS-M5100 11-51T needs a Shimano HG freehub, but Rear wheel has Shimano Micro Spline. On 46 of the 124 verified rear hubs in this catalog.
  • Will not fiterror · Rear DerailleurSpeed mismatch: Derailleur 12s, Cassette 11s. Shifter, derailleur and cassette must be the same speed count. On 39 of the 75 verified rear derailleurs in this catalog.
  • Will not fiterror · Rear HubFreehub mismatch: Shimano Deore CS-M5100 11-51T needs a Shimano HG freehub, but Rear wheel has SRAM XD. On 35 of the 124 verified rear hubs in this catalog.
  • Will not fiterror · ShifterSpeed mismatch: Shifter 12s, Cassette 11s. Shifter, derailleur and cassette must be the same speed count. On 28 of the 53 verified shifters in this catalog.
  • Will not fiterror · Rear DerailleurDrivetrain mismatch: Derailleur = Shimano LinkGlide (CUES), Cassette = shimano-11. Shifter, derailleur, cassette, chain and front derailleur must be one system. On 21 of the 75 verified rear derailleurs in this catalog.

Cassette capacity, Rear Derailleur. 43 more findings from the same check, on up to 1 of the 75 verified rear derailleurs each.

Drivetrain system, Chain. 15 more findings from the same check, on up to 9 of the 45 verified chains each.

Drivetrain system, Rear Derailleur. 12 more findings from the same check, on up to 19 of the 75 verified rear derailleurs each.

Drivetrain system, Shifter. 12 more findings from the same check, on up to 19 of the 53 verified shifters each.

Drivetrain speeds, Rear Derailleur. 4 more findings from the same check, on up to 10 of the 75 verified rear derailleurs each.

Drivetrain speeds, Shifter. 4 more findings from the same check, on up to 7 of the 53 verified shifters each.

Drivetrain system, Front Derailleur. 4 more findings from the same check, on up to 12 of the 34 verified front derailleurs each.

Freehub, Rear Hub. 2 more findings from the same check, on up to 4 of the 124 verified rear hubs each.

Freehub, Rear Wheel. 2 more findings from the same check, on up to 19 of the 607 verified rear wheels each.

Gearbox cassette, Gearbox. 1 more finding from the same check, on up to 6 of the 6 verified gearboxs each.

Open a variant in the builder to see the ones that apply to your own parts.

Check before you buy

    Front derailleur speeds, Front Derailleur. 18 more findings from the same check, on up to 1 of the 34 verified front derailleurs each.

    Open a variant in the builder to see the ones that apply to your own parts.

    The checker compares the dimensions listed in what we check, and what we don’t. “No conflicts found” means no conflict among those dimensions — not a guarantee that a build works. Errors mean it won’t fit; warnings mean it works but check; infos are notes.
    Shimano Deore CS-M5100 11-51T
    Photo: Shimano

    $45.00 MSRP·450 g

    What the maker states

    Speeds
    11-speed (rear index count the maker rates it for)
    System
    Drivetrain system shimano-11
    Freehub
    / driver Shimano HG
    Minimum cog
    Smallest cog 11 teeth
    Maximum cog
    Largest cog 51 teeth
    Source

    Source: the maker’s page. Last checked 2026-07-21.

    Checked against

    The checker ran this model against every verified part below that it has a slot for, the same way it checks a build in the builder. What follows is the verdict it actually produced for that specific pairing — not a recommendation, and not a guarantee any of these parts fits your own bike.

    6 of 1875 counterparts with a page of their own that the checker actually probed this model against, in alphabetical order by brand and model — never by price, popularity or the verdict itself.

    Where this sits

    Previous: Shimano Deore CS-M4100 11-46 (10-speed)Next: Shimano CS-M6100 10-51All Shimano cassettesOpen a variant in the builder to see the ones that apply to your own parts