BMC Roadmachine: geometry and sizes
BMC may sell more than one frame under the Roadmachine 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 BMC Roadmachine versions
| Version | Smallest | Largest |
|---|---|---|
| Roadmachine 2027 road · carbon | 47 · 525 / 370 | 61 · 645 / 398 |
| Roadmachine 2026 road · carbon | 47 · 525 / 370 | 61 · 645 / 398 |
| Roadmachine 01 2027 road · carbon | 47 · 525 / 370 | 61 · 645 / 398 |
| Roadmachine 01 2026 road · carbon | 47 · 525 / 370 | 61 · 645 / 398 |
Older BMC Roadmachine model years
Frame geometry only, no build. Model years are approximate.
| Version | Smallest | Largest |
|---|---|---|
| Roadmachine X One 2020–2023 | 47 · 516 / 374 | 61 · 644 / 398 |
| Roadmachine 01 (lower stack) 2017–2019 | 47 · 514 / 375 | 61 · 617 / 407 |
| Roadmachine 01 (higher stack) 2017–2019 | 47 · 530 / 369 | 61 · 633 / 402 |
| Roadmachine 03 2017–2018 | 47 · 525 / 376 | 61 · 628 / 408 |
| Roadmachine 02 (lower stack) 2017 | 47 · 514 / 375 | 61 · 617 / 407 |
| Roadmachine 02 (higher stack) 2017 | 47 · 530 / 369 | 61 · 633 / 402 |
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.