BMC Roadmachine 01 geometry
BMC Roadmachine 01 (carbon road) has 6 published frame sizes. Stack 525–645 mm; reach 370–398 mm. Sources, weights and tyre clearance where available.
Road · carbon · Model year not specified
Check the source. The frame version or current availability is not fully confirmed. Check the source notes.
Measurements
Lengths in mm · Angles in degrees Select + beneath a size to compare
| Frame size | 47 | 51 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|
| Stack mm | 525 | 550 | 570 | 595 | 620 | 645 |
| Reach mm | 370 | 379 | 383 | 388 | 393 | 398 |
| Effective top tube mm | 520 | 537 | 546 | 559 | 571 | 581 |
| Seat tube length mm | 414 | 461 | 488 | 508 | 529 | 550 |
| Head tube length mm | 112 | 138 | 154 | 181 | 207 | 233 |
| Head tube angle ° | 71.4 | 71.4 | 72.2 | 72.2 | 72.2 | 72.2 |
| Seat tube angle ° | 74.2 | 74.2 | 74.2 | 74.2 | 74.2 | 74.2 |
| Chainstay length mm | 415 | 415 | 415 | 415 | 415 | 415 |
| Wheelbase mm | 982 | 1000 | 997 | 1010 | 1023 | 1036 |
| Bottom bracket drop mm | 75 | 75 | 75 | 75 | 75 | 75 |
| Bottom bracket height mm | — | — | — | — | — | — |
| Fork length mm | 379 | 379 | 379 | 379 | 379 | 379 |
| Fork offset mm | 50 | 50 | 45 | 45 | 45 | 45 |
| Trail mm | 63 | 63 | 63 | 63 | 63 | 63 |
| Standover height mm | 726 | 762 | 786 | 807 | 828 | 849 |
| Front centre mm | 579 | 596 | 594 | 607 | 620 | 633 |
— Not published in the collected chart. Size labels follow the manufacturer.
Frame and fork weight
- Frame: 963 g · size 54
BMC claimed Gen 3 Roadmachine 01 frame, size 54, at 2024 platform launch; current product uses the same Gen 3 geometry, but finish and hardware may vary.
- Fork: 448 g
BMC claimed Gen 3 Roadmachine 01 fork at 2024 platform launch; finish, steerer and hardware may vary on current product.
Tyre clearance
- Up to 40 mm · 700C
Measured frameset clearance; front derailleur can reduce this limit. Wheel size defaults to 700C for catalogue filtering; not explicitly specified by the source.
- Up to 34 mm · 700C
Measured limit with the front derailleur specified on the source build; other builds require separate verification. Wheel size defaults to 700C for catalogue filtering; not explicitly specified by the source.
Sources
Reviewed 2026-10-01
Measurement and frame notes
- These weights come from the 2024 launch of the same Gen 3 Roadmachine 01 platform; current paint and hardware can change actual mass.
- Weight source: https://www.cyclist.co.uk/news/bmc-roadmachine-2024