Argon 18 Nitrogen Pro
Aero road · 6 sizes
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- Bike
- Argon 18 Nitrogen Pro · Aero road · 6 sizes · integrated cockpit
- Geometry
- argon18.com, fetched 29 Aug 2026, re-checked, no differences
- Cockpit
- Generic stem and bar, assumed
- Solved with
- cover 15 mm (assumed), max spacers 40 mm (assumed), stem clamp centre 20 mm (assumed), so every verdict carries ±10 mm at the bar
- Sheet
- 6 September 2026 · 210 bikes, 43 makes, 1,262 sizes in the catalogue
Geometry, every size, from the maker's table
The tinted row is the size drawn beside it. Press a size to draw it.| Size | Stack (mm) | Reach (mm) | Head angle (deg) | Seat angle (deg) | Head tube (mm) | Chainstay (mm) | Wheelbase (mm) | Standover (mm) |
|---|---|---|---|---|---|---|---|---|
| XXS | 486 | 370 | 71.2 | 75 | 81 | 410 | 967 | 682 |
| XS | 508 | 377 | 72.1 | 74.5 | 97 | 410 | 972 | 706 |
| S | 531 | 384 | 72.7 | 74 | 113 | 410 | 975 | 734 |
| M | 555 | 392 | 72.7 | 73.5 | 138 | 410 | 990 | 772 |
| L | 580 | 400 | 72.7 | 73 | 165 | 410 | 1006 | 810 |
| XL | 607 | 409 | 73 | 72.5 | 192 | 410 | 1020 | 848 |
The table runs on to the right: 6 more columns after Reach. Scroll it sideways to read them.
The M drawn to scale from the table, with no build on it. Stack and reach run from the bottom bracket to the top of the head tube; every size is solved from those two. One square is 100 mm.
The maker's cockpit
No stock cockpit I can name, so every size is solved on a generic stem and bar unless you choose one on the sheet.Generic stem and barAssumedNo bar is listed for this frame.
In the maker's words
Kept whole, as I read it off argon18.com.Nitrogen Pro (Dura-Ace Di2 build) with Argon 18's integrated cockpit per build; fork length 376 mm, rake 49 mm (XXS-XS) / 45 mm (S-XL).
Cockpit and seatpost, in the maker's words · 36 words
Nitrogen Pro (Dura-Ace Di2 build) with Argon 18's integrated cockpit per build; fork length 376 mm, rake 49 mm (XXS-XS) / 45 mm (S-XL). Only the 0 mm head tube setting is printed on this page.
OFFICIAL SOURCE: Argon 18 Nitrogen Pro Shimano Dura-Ace Di2 build page, six sizes XXS-XL, decimal commas on many cells (converted). Source: html table (official Argon 18 build page, "Geometry and fit" section, an HTML grid (div cells) in centimetres; converted to mm by script; fetched 2026-08-29
How I read the maker's table
the Nitrogen (non-Pro) page prints the identical grid. Trail not printed (null). UNITS: Argon 18 prints lengths in centimetres to one decimal (some pages with a decimal comma) and angles in degrees; every length was multiplied by 10 to give millimetres. ARGON 3D SYSTEM: the frames take head tube extensions (0 / 15 / 25 / 35 mm depending on model); the page prints H2/H3 head tube lengths and the "Stack 3D (25mm)" / "Reach 3D (25mm)" rows for the extended settings - this file stores the 0 mm (bare) values and the extended stack/reach are in notes. Front centre not published (null). Argon prints fork rake and fork length under a "cm" unit label but sometimes as millimetres (e.g. "51.0" rake, "400.0" fork length): values of 20 or more were taken as millimetres, smaller ones as centimetres. Size labels XXS-XL with Argon's cm equivalents 44-46 / 47-50 / 51-53 / 54-56 / 57-59 / 60-62. Model year not printed (null).
Source: html table (official Argon 18 build page, "Geometry and fit" section, an HTML grid (div cells) in centimetres; converted to mm by script; fetched 2026-08-29, HTTP 200)