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RockShox SIDLuxe Trek IsoStrut (235x32.5) Rear Shock

What the checker says85will not fit10check before you buy5worth knowing

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 5149 verified mountain bike parts in this catalog. 4891 produced no finding of any kind.

  • info · this part aloneHeads-up: the RockShox SIDLuxe Trek IsoStrut (235x32.5) is OEM-only - it ships with the Trek Supercaliber SLR Gen 2 and is not sold separately, so plan on that frame.

Will not fit

  • Will not fiterror · FrameOEM shock: the RockShox SIDLuxe Trek IsoStrut (235x32.5) is only available bundled with the Trek Supercaliber SLR Gen 2 - it is not sold separately. On 257 of the 258 verified frames in this catalog.
  • Will not fiterror · FrameShock mount mismatch: Frame uses a Trunnion shock but Shock is Standard eyelet. On 88 of the 258 verified frames in this catalog.
  • Will not fiterror · FrameShock size mismatch: Frame needs 210x55mm but Shock is 239x40mm. On 29 of the 258 verified frames in this catalog.
  • Will not fiterror · FrameShock size mismatch: Frame needs 230x65mm but Shock is 239x40mm. On 25 of the 258 verified frames in this catalog.
  • Will not fiterror · FrameShock size mismatch: Frame needs 205x65mm but Shock is 239x40mm. On 22 of the 258 verified frames in this catalog.
  • Will not fiterror · FrameShock size mismatch: Frame needs 185x55mm but Shock is 239x40mm. On 20 of the 258 verified frames in this catalog.
  • Will not fiterror · FrameShock size mismatch: Frame needs 190x45mm but Shock is 239x40mm. On 15 of the 258 verified frames in this catalog.
  • Will not fiterror · FrameShock size mismatch: Frame needs 205x60mm but Shock is 239x40mm. On 14 of the 258 verified frames in this catalog.

Hardtail shock, Frame. 56 more findings from the same check, on up to 1 of the 258 verified frames each.

Shock size, Frame. 21 more findings from the same check, on up to 9 of the 258 verified frames each.

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

Check before you buy

    Package only, Frame. 10 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.

    Worth knowing

    • Worth knowinginfo · FrameNote: Intense Tracer 279 ships with the Fox DHX2 Factory (205x65 trunnion), but is also sold frame-only - running the RockShox SIDLuxe Trek IsoStrut (235x32.5) is fine. On 1 of the 258 verified frames in this catalog.
    • Worth knowinginfo · FrameNote: Niner RIP 9 RDO ships with the Fox Float X Factory (210x55 std), but is also sold frame-only - running the RockShox SIDLuxe Trek IsoStrut (235x32.5) is fine. On 1 of the 258 verified frames in this catalog.
    • Worth knowinginfo · FrameNote: Specialized Epic World Cup ships with the RockShox SIDLuxe WCID Ultimate, but is also sold frame-only - running the RockShox SIDLuxe Trek IsoStrut (235x32.5) is fine. On 1 of the 258 verified frames in this catalog.
    • Worth knowinginfo · FrameNote: Vitus Sommet 290 CRX ships with the Fox Float X2 Factory (205x62.5 trunnion, OE), but is also sold frame-only - running the RockShox SIDLuxe Trek IsoStrut (235x32.5) is fine. On 1 of the 258 verified frames in this catalog.
    • Worth knowinginfo · FramePackage match: you are using the RockShox SIDLuxe Trek IsoStrut (235x32.5) that Trek Supercaliber SLR Gen 2 ships with. On 1 of the 258 verified frames in this catalog.
    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.

    $529.00 MSRP·368 g

    What the maker states

    Eye
    Eye-to-eye 239 mm
    Stroke
    40 mm
    Mount
    Standard eyelet
    Spring
    air spring
    OEM only
    OEM only: yes
    Source

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

    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 1859 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: RockShox SIDLuxeNext: RockShox SIDLuxe WCID UltimateAll RockShox rear shocksOpen a variant in the builder to see the ones that apply to your own parts