Argon 18 Dark Matter: geometry and sizes
Argon 18 may sell more than one frame under the Dark Matter name, each with its own geometry. These are the ones in the database. Each shows stack and reach for the smallest and largest size. The numbers for every size are on the model page.
The tables show the smallest and largest size, each with stack / reach in millimetres. Both terms are explained in the glossary.
Current Argon 18 Dark Matter versions
| Version | Smallest | Largest |
|---|---|---|
| Dark Matter 2026 gravel · carbon | XXS · 520 / 370 | XL · 629 / 430 |
Older Argon 18 Dark Matter model years
Frame geometry only, no build. Model years are approximate.
| Version | Smallest | Largest |
|---|---|---|
| Dark Matter PF86.5 2019–2025 | XXS · 529 / 357 | XL · 634 / 407 |
| Dark Matter 2024 | XXS · 552 / 348 | L · 632 / 390 |
| Dark Matter 2023 | XXS · 529 / 357 | XL · 634 / 400 |
The same size label on two versions doesn’t mean the same frame. And stack and reach only describe the frame: where the bars end up also depends on the stem, spacers and bars.
There’s no sizing by height here. Everything starts from your position. Enter your position and I’ll work out which versions and sizes match it.