First Components Headset
1 model, 1 verified variant. Only rows checked against First Components’s own page are listed.
A value shown as a set or a range differs between this model’s variants and is never one variant’s spec. A cell marked not stated is a field the maker does not publish, so nothing here checks it.
| Model | Variants | Upper | Lower | Steerer | Price (MSRP) |
|---|---|---|---|---|---|
| First Components C522A-5 Internal Cable Routing Headset | 1 | Assembly IS52/28.6 (S.H.I.S.) | Assembly ZS56/40 (S.H.I.S.) | Tapered (1.5-1.125) | $55.00 |
Source for every row: First Components’s own product pages, last checked on 2026-09-02.
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.