2026
Fourstroke 01 THREE
The 2026 BMC Fourstroke 01 THREE is an XC bike offered in 4 sizes, S to XL. Reach runs from 437 to 500 mm and stack from 584 to 615 mm. It ships with Shimano SLX and DT Swiss X 1900.
Every number on this page was confirmed by at least two independent sources. Where a figure is not verified, the cell says so instead of guessing. Verified against us.bmc-switzerland.com and at least one independent source. Last checked .
Key facts
- Brand
- BMC
- Model
- Fourstroke 01
- Model year
- 2026
- Frame
- THREE
- Type
- XC
- Sizes
- S, M, L, and XL
- Verified measurements
- 40 of 40
- Verified against
- us.bmc-switzerland.com and at least one independent source
- Last checked
Geometry by size
Millimeters unless the row says degrees. Scroll sideways for the larger sizes.
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Reach(mm) | 437mm | 457mm | 477mm | 500mm |
| Stack(mm) | 584mm | 592mm | 600mm | 615mm |
| Head tube angle(°) | 66.75° | 66.75° | 66.75° | 66.75° |
| Seat tube angle(°) | 75.6° | 75.6° | 75.6° | 75.6° |
| Effective top tube(mm) | 574mm | 597mm | 621mm | 649mm |
| Wheelbase(mm) | 1139mm | 1171mm | 1188mm | 1218mm |
| BB drop(mm) | 53mm | 53mm | 53mm | 53mm |
| Standover(mm) | 725mm | 725mm | 725mm | 765mm |
| Seat tube length(mm) | 420mm | 430mm | 460mm | 490mm |
| Head tube length(mm) | 84mm | 93mm | 101mm | 118mm |
40 of 40 measurements verified.✓Verified, two or more sources agree
Stock build
17 partsManufacturer specs are labeled; checkmarks mean two or more sources agree.
Frame
BMC Fourstroke 01
Suspension
RockShox SID SL 3P
RockShox SIDLUXE 3P
Drivetrain
Shimano SLX
Shimano SLX
Shimano Deore
Shimano Deore M6100
Shimano SLX
Shimano SLX
Wheels & Tires
DT Swiss X 1900
Vittoria Mezcal
Brakes
Shimano SLX
Shimano SM-RT54
Cockpit
BMC MFB 02
BMC MSM01
Seatpost & Saddle
X-Fusion Manic
fizik Antares R7
Quick answers
- What sizes does the 2026 BMC Fourstroke 01 THREE come in?
- It comes in 4 sizes: S, M, L, and XL.
- What are the reach and stack of the 2026 BMC Fourstroke 01 THREE in size L?
- In size L, reach is 477 mm and stack is 600 mm.
- What is the head tube angle of the 2026 BMC Fourstroke 01 THREE?
- The head tube angle is 66.75 degrees in every size.
- What does the 2026 BMC Fourstroke 01 THREE ship with?
- The stock build includes BMC Fourstroke 01, RockShox SID SL 3P, Shimano SLX, and DT Swiss X 1900.
- Which years of the BMC Fourstroke 01 are on Quiver?
- Quiver has the BMC Fourstroke 01 for 2026.
Ride a Fourstroke 01? Keep it in Quiver.
Add this bike and it arrives with its geometry and stock parts already filled in. Swap parts as you change them and the build sheet stays true.
Add this bike to my garage Free. Opens Quiver if you have it, or the App Store if you don't.