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Superstar Components Top Cup + Bottom Cup (ZS44/ZS56, tapered) Headset

What the checker says178will not fit

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 6104 verified mountain bike parts in this catalog. 5957 produced no finding of any kind.

Will not fit

    Headset upper, Frame. 69 more findings from the same check, on up to 1 of the 258 verified frames each.

    Headset steerer, Fork. 61 more findings from the same check, on up to 1 of the 490 verified forks each.

    Headset lower, Frame. 48 more findings from the same check, on up to 1 of the 258 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.

    $73.53 MSRP

    What the maker states

    Upper
    Assembly ZS44/28.6 (S.H.I.S.)
    Lower
    Assembly ZS56/40 (S.H.I.S.)
    Steerer
    Tapered (1.5-1.125)
    Source

    Source: the maker’s page. Last checked 2026-07-23.

    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 1881 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

    All Superstar Components headsetsOpen a variant in the builder to see the ones that apply to your own parts