First Components C522A-5 Internal Cable Routing Headset Headset
What the checker says284will 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. 5867 produced no finding of any kind.
Will not fit
- Will not fiterror · FrameHeadset upper cup mismatch: First Components C522A-5 Internal Cable Routing Headset upper is IS52/28.6 but Antidote Carbonjack's upper head tube is ZS44 (S.H.I.S.) - cups press in at their exact bore only. On 2 of the 258 verified frames in this catalog.
Headset upper, Frame. 174 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.
$55.00 MSRP
What the maker states
- Upper
- Assembly IS52/28.6 (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 2026-09-02.
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.
- 5DEV R-SPEC Trail/Enduro Cranks (Crankset) No conflicts found
- 9point8 Fall Line (Dropper Post) No conflicts found
- 9point8 Stout (31.8, 30mm) (Stem) No conflicts found
- ACID SLX 30 front (Front Wheel) No conflicts found
- ACID SLX 30 rear (Rear Wheel) No conflicts found
- Airdrop Edit MX (Frame) Will not fit
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.