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Prototype - Evolving Daily

FSA Gossamer Pro AGX+ 1x Crankset

What the checker says17will not fit12worth knowing

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 848 verified gravel bike parts in this catalog. 757 produced no finding of any kind.

Will not fit

    Rg bb spindle, Bottom Bracket. 17 more findings from the same check, on up to 1 of the 30 verified bottom brackets each.

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

    Worth knowing

    • Worth knowinginfo · FrameBottom bracket: FSA Gossamer Pro AGX+ 1x has a 24mm-road spindle - pick the matching bsa-road-shell / 24mm-road bottom bracket for this frame (sold separately). On 36 of the 74 verified frames in this catalog.
    • Worth knowinginfo · FrameBottom bracket: FSA Gossamer Pro AGX+ 1x has a 24mm-road spindle - pick the matching bb86-shell / 24mm-road bottom bracket for this frame (sold separately). On 14 of the 74 verified frames in this catalog.
    • Worth knowinginfo · FrameBottom bracket: FSA Gossamer Pro AGX+ 1x has a 24mm-road spindle - pick the matching t47-86-shell / 24mm-road bottom bracket for this frame (sold separately). On 8 of the 74 verified frames in this catalog.
    • Worth knowinginfo · FrameBottom bracket: FSA Gossamer Pro AGX+ 1x has a 24mm-road spindle - pick the matching bb386evo-shell / 24mm-road bottom bracket for this frame (sold separately). On 6 of the 74 verified frames in this catalog.
    • Worth knowinginfo · FrameBottom bracket: FSA Gossamer Pro AGX+ 1x has a 24mm-road spindle - pick the matching pf30-shell / 24mm-road bottom bracket for this frame (sold separately). On 2 of the 74 verified frames in this catalog.
    • Worth knowinginfo · FrameBottom bracket: FSA Gossamer Pro AGX+ 1x has a 24mm-road spindle - pick the matching t47-73-shell / 24mm-road bottom bracket for this frame (sold separately). On 2 of the 74 verified frames in this catalog.

    Rg bb advisory, Frame. 6 more findings from the same check, on up to 1 of the 74 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.

    $216.00 MSRP·736 g

    What the maker states

    Bottom bracket
    Bottom-bracket interface 24mm-road
    Chainline
    50 mm
    Chainrings
    1x chainring
    Ring
    Chainring 42 teeth
    Speeds
    11-speed (rear index count the maker rates it for)
    The rest of what the maker states4 not published

    4 further fields the checker looks for are not published by FSA, so we leave them blank rather than estimate them, and those 4 checks stay silent on this crankset. They are ring standard, ring mount as shipped, ring bcd as shipped and ring bolt count as shipped. Each is recorded as “not stated by the maker (not checked)”.

    Source: the maker’s page. Last checked 2026-09-24.

    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 495 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

    FSA Gossamer Pro AGX+ 1x is the first model on that list.Next: FSA Gossamer Pro Modular AGX+ 2xAll FSA cranksetsOpen a variant in the builder to see the ones that apply to your own parts