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Prototype - Evolving Daily

Shimano XTR M9100 Shifter

What the checker says74will not fit

Run variant by variant through the e-MTB 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 463 verified e-MTB parts in this catalog. 357 produced no finding of any kind. Each variant produces 53 distinct errors and 0 distinct warnings.

Will not fit

  • Will not fiterror · Rear DerailleurDrivetrain mismatch: Shifter = shimano-12, Derailleur = shimano-linkglide. Shifter, derailleur and cassette must be one system. On 21 of the 74 verified rear derailleurs in this catalog. Applies to all 2 variants.
  • Will not fiterror · CassetteDrivetrain mismatch: Shifter = shimano-12, Cassette = shimano-linkglide. Shifter, derailleur and cassette must be one system. On 16 of the 58 verified cassettes in this catalog. Applies to all 2 variants.
  • Will not fiterror · Rear DerailleurSpeed mismatch: Shifter 12s, Derailleur 11s. Shifter, derailleur and cassette must be the same speed count. On 15 of the 74 verified rear derailleurs in this catalog. Applies to all 2 variants.
  • Will not fiterror · Rear DerailleurDrivetrain mismatch: Shifter = shimano-12, Derailleur = sram-eagle. Shifter, derailleur and cassette must be one system. On 12 of the 74 verified rear derailleurs in this catalog. Applies to all 2 variants.
  • Will not fiterror · CassetteSpeed mismatch: Shifter 12s, Cassette 11s. Shifter, derailleur and cassette must be the same speed count. On 11 of the 58 verified cassettes in this catalog. Applies to all 2 variants.
  • Will not fiterror · Rear DerailleurSpeed mismatch: Shifter 12s, Derailleur 10s. Shifter, derailleur and cassette must be the same speed count. On 10 of the 74 verified rear derailleurs in this catalog. Applies to all 2 variants.
  • Will not fiterror · CassetteDrivetrain mismatch: Shifter = shimano-12, Cassette = sram-eagle. Shifter, derailleur and cassette must be one system. On 9 of the 58 verified cassettes in this catalog. Applies to all 2 variants.

Emtb actuation, Rear Derailleur. 42 more findings from the same check, on up to 1 of the 74 verified rear derailleurs each.

Emtb drivetrain system, Rear Derailleur. 10 more findings from the same check, on up to 7 of the 74 verified rear derailleurs each.

Emtb drivetrain system, Cassette. 8 more findings from the same check, on up to 6 of the 58 verified cassettes each.

Emtb drivetrain speeds, Cassette. 4 more findings from the same check, on up to 8 of the 58 verified cassettes each.

Emtb drivetrain speeds, Rear Derailleur. 3 more findings from the same check, on up to 8 of the 74 verified rear 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.

$130.00 to $135.00 MSRP·112 to 117 g

What the maker states

System
Drivetrain system Shimano 12-speed
Speeds
12-speed (rear index count the maker rates it for)
Actuation
Mechanical (cable)
Clamp type
Clamp I-Spec EV (on 1 of 2 variants)

A value shown as a set or a range differs between this model’s variants and is never one variant’s spec.

2 verified variants

VariantClamp typePrice (MSRP)WeightSourceLast checkedBuild
XTR M9100 (2018)not stated$130.00117 gmaker’s page2026-07-13Build with this
XTR M9100 (I-SPEC EV) (2018)Clamp I-Spec EV$135.00112 gmaker’s page2026-08-15Build with this
Source

Source: each variant links the maker’s own page in the table above. Last checked 2026-07-13 to 2026-08-15.

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 242 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 XTR M9250 Di2Shimano XTR M9100 is the last model on that list.All Shimano shiftersOpen a variant in the builder to see the ones that apply to your own parts