MODEL AND SIZING GUIDE
BMC Speedmachine size guide
A TT guide focused on the relationship between the frame and its adjustable contact points.
Guide updated 2026-09-22 · Source-check dates belong to individual entries. Independent editorial review pending.
Match the exact model and its published chart before choosing a size. If two size bands overlap, keep both as candidates. The year can stay unknown until you identify the generation.
Which BMC Speedmachine do you have?
Retain the generation and product identifier, such as the identifier shown in the source URL. Do not deduce a model year from an identifier alone.
Collect a full side photo, the model wording, frame-size sticker, wheel marking and a view of the brakes and fork. Open the original listing for the candidate entry and compare the specification and any photographs it provides. Changed components or matching paint alone cannot prove the generation.
Follow the guide to identifying an unknown model year. Leave the chart unconfirmed until the frame generation and wheel option match.
What is recorded for this model family?
4 catalogue entries: 1 with body ranges and 3 with size labels only. No model year is stated in these entries. These are source records, not a count of distinct frame generations or bikes currently in stock.
A source-check date is not a manufacturing date. Two sources can describe the same bike, and a retailer may list only some of its original sizes. Missing years or dimensions are left unknown.
Your selected entry
The details below belong only to the selected entry.
BMC Speedmachine 01 ONE — Gen 1, 26a-000030
Year not stated · Source checked 2026-09-19 · Manufacturer
The manufacturer leaves the smallest/largest height bands open-ended. These require confirmation. Use the exact pad-position chart, including tilt and spacers, before choosing a TT frame.
| Frame size | Rider height | Inside leg |
|---|---|---|
| S | < 174 | Not published |
| M | 172–185 | Not published |
| L | > 180 | Not published |
| Frame size | Stack | Reach | Standover |
|---|---|---|---|
| S | Not recorded | Not recorded | 766 |
| M | Not recorded | Not recorded | 806 |
| L | Not recorded | Not recorded | 837 |
Stack and reach describe the frame’s vertical and horizontal dimensions to the steering-tube position. Standover is a frame-clearance measurement. Confirm the manufacturer’s measuring convention before comparing different models.
Browse all BMC Speedmachine variants and years
Choose an entry to see its recorded sizing information above. Each selection stays within this model-family guide.
| Exact model and source date | Recorded year | Available evidence | Open record |
|---|---|---|---|
| BMC Speedmachine 01 ONE — Gen 1, 26a-000030Manufacturer · checked 2026-09-19 | Year not stated | Body rangesS / M / L | View chart for BMC Speedmachine 01 ONE — Gen 1, 26a-000030 |
| BMC Speedmachine 01 Four Time Trial Bike White/CarbonRetailer · checked 2026-09-20 | Year not stated | Size labels onlySM / MD / LG | View size labels for BMC Speedmachine 01 Four Time Trial Bike White/Carbon |
| BMC Speedmachine 01 One Triathlon Bike Carbon/Dust GoldRetailer · checked 2026-09-20 | Year not stated | Size labels onlySM / MD / LG | View size labels for BMC Speedmachine 01 One Triathlon Bike Carbon/Dust Gold |
| BMC Speedmachine 01 Three Triathlon Bike Carbon/Neon RedRetailer · checked 2026-09-20 | Year not stated | Size labels onlySM / MD / LG | View size labels for BMC Speedmachine 01 Three Triathlon Bike Carbon/Neon Red |
How to choose between sizes
Check which pad positions are achievable with the actual extensions and spacers. A height shortlist cannot assess aerodynamics or event eligibility.
Measure height and inside leg twice, barefoot. Where both are published, keep each height and inside-leg pair together. Keep all overlapping candidates. If the measurements conflict, sit outside the chart or rely on an open-ended band, seek individual advice rather than extrapolating.
Read the guide to choosing between two bike sizes. Frame stack and reach do not include the whole hand or forearm-pad position, and a height chart cannot establish handling or comfort.
Buying this bike second hand?
Ask which parts have changed, confirm the physical frame label and check the actual component limits. A receipt date may differ from the model year. Photographs help identify the bike; they cannot replace a mechanical inspection.
Use the second-hand bike sizing checklist before travelling to see a listing.