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OneUp V3 Dropper Dropper Post

What the checker says204will not fit

Run variant by variant through the gravel 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 818 verified gravel bike parts in this catalog. 803 produced no finding of any kind; that is V3 Dropper 27.2 (120mm). V3 Dropper 30.9 (90mm) clears 752. Each variant produces 15 to 66 distinct errors and 0 distinct warnings.

Will not fit

    Rg seatpost, Frame. 204 more findings from the same check, on up to 1 of the 69 verified frames 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.
    OneUp V3 Dropper 27.2 (90mm)
    Photo: OneUp

    $269.99 MSRP·304 to 415 g

    What the maker states

    Diameter
    30.9 mm diameter (on 3 of 5 variants); 27.2 mm diameter (on 2 of 5 variants)
    Drop
    120 mm of drop (on 2 of 5 variants); 90 mm of drop (on 2 of 5 variants); 150 mm of drop (on 1 of 5 variants)
    Actuation
    Mechanical

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

    5 verified variants

    VariantDiameterDropPrice (MSRP)WeightSourceLast checkedBuild
    V3 Dropper 27.2 (90mm)27.2 mm diameter90 mm of drop$269.99304 gmaker’s page2026-08-14Build with this
    V3 Dropper 27.2 (120mm)27.2 mm diameter120 mm of drop$269.99340 gmaker’s page2026-08-14Build with this
    V3 Dropper 30.9 (90mm)30.9 mm diameter90 mm of drop$269.99325 gmaker’s page2026-08-14Build with this
    V3 Dropper 30.9 (120mm)30.9 mm diameter120 mm of drop$269.99370 gmaker’s page2026-08-14Build with this
    V3 Dropper 30.9 (150mm)30.9 mm diameter150 mm of drop$269.99415 gmaker’s page2026-08-14Build with this
    Source

    Source: each variant links the maker’s own page in the table above. Last checked 2026-08-14.

    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 483 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: OneUp V2 Dropper 27.2OneUp V3 Dropper is the last model on that list.All OneUp dropper postsOpen a variant in the builder to see the ones that apply to your own parts