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Shimano Ultegra Rear Wheel

What the checker says89will not fit20check before you buy

Run variant by variant through the road 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 948 verified road bike parts in this catalog. 875 produced no finding of any kind. Each variant produces 35 distinct errors and 8 distinct warnings.

Will not fit

  • Will not fiterror · Rear RotorRear rotor: a 6-bolt rotor does not mount on a Center Lock hub as it is - the two use different rotor interfaces. The part that bridges them is a Center Lock adapter, and the ones makers publish fit one-piece rotors only. A shim or adapter may make other sizes or standards work, but that is a modification, not a fit. On 15 of the 38 verified rotors in this catalog. Applies to all 3 variants.
  • Will not fiterror · Front WheelBrake system mismatch: Front wheel = rim, Rear wheel = disc. Disc and rim-brake parts do not mix on one build. On 7 of the 101 verified front wheels in this catalog. Applies to all 3 variants.
  • Will not fiterror · Front CaliperBrake system mismatch: Rear wheel = disc, Front brake = rim. Disc and rim-brake parts do not mix on one build. On 6 of the 35 verified calipers in this catalog. Applies to all 3 variants.
  • Will not fiterror · Rear CaliperBrake system mismatch: Rear wheel = disc, Rear brake = rim. Disc and rim-brake parts do not mix on one build. On 6 of the 35 verified calipers in this catalog. Applies to all 3 variants.
  • Will not fiterror · Shifter/Brake LeversBrake system mismatch: Levers = rim, Rear wheel = disc. Disc and rim-brake parts do not mix on one build. On 3 of the 25 verified shifter/brake levers in this catalog. Applies to all 3 variants.
  • Will not fiterror · Front TireWheel size mismatch: Rear wheel = 700c, Front tire = 650b. A road or gravel build runs one wheel size end to end. On 2 of the 79 verified tires in this catalog. Applies to all 3 variants.
  • Will not fiterror · Rear TireWheel size mismatch: Rear wheel = 700c, Rear tire = 650b. A road or gravel build runs one wheel size end to end. On 2 of the 79 verified tires in this catalog. Applies to all 3 variants.

Rg freehub, Cassette. 81 more findings from the same check, on up to 1 of the 34 verified cassettes each.

Rg wheel size, Front Wheel. 1 more finding from the same check, on up to 1 of the 101 verified front wheels each.

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

Check before you buy

    Rg tire rim, Rear Tire. 18 more findings from the same check, on up to 2 of the 79 verified tires each.

    Rg tire rim min, Rear Tire. 2 more findings from the same check, on up to 1 of the 79 verified tires 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 Ultegra WH-R8170-C36-TL
    Photo: Shimano

    $850.00 to $960.00 MSRP·831 to 911 g

    What the maker states

    Wheel
    Built for a 700c wheel
    Freehub
    / driver hg-l2
    Rotor mount
    Center-lock
    Internal width
    Internal rim width 21 mm
    Hub
    Spacing 12x142
    Brake system
    Disc

    3 verified variants

    VariantPrice (MSRP)WeightSourceLast checkedBuild
    Ultegra WH-R8170-C36-TL$900.00831 gmaker’s page2026-07-22Build with this
    Ultegra WH-R8170-C50-TL$850.00872 gmaker’s page2026-08-15Build with this
    Ultegra WH-R8170-C60-TL$960.00911 gmaker’s page2026-08-15Build with this
    The rest of what the maker states2 stated·1 not published
    • Tire up to 32 mm (maker-stated maximum).
    • Tire no narrower than 25 mm.

    1 further field the checker looks for is not published by Shimano, so we leave it blank rather than estimate it, and that check stays silent on this rear wheel. It is maximum tire basis. Each is recorded as “not stated by the maker (not checked)”.

    Source: each variant links the maker’s own page in the table above. Last checked 2026-07-22 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 625 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 WH-R501-A-CLNext: Shimano Dura-Ace WH-R9270-C50-TLAll Shimano rear wheelsOpen a variant in the builder to see the ones that apply to your own parts