2026
Fourstroke 01 THREE
The 2026 BMC Fourstroke 01 THREE has frame geometry near the more aggressive end of the range for XC bikes, with a slacker head angle and a shorter rear-center relative to wheelbase. This page lists 4 geometry entries, with reach from 437 to 500 mm and stack from 584 to 615 mm. The Fourstroke 01 THREE build comes with Shimano SLX shifting and DT Swiss X 1900 wheels.
Geometry comparisons use 591 other xc bikes with usable geometry in Quiver. They describe frame geometry, not your hand position or tested ride feel.
Keep a record of your Fourstroke 01 in Quiver. Start with the catalog details available for this bike, then keep track of the parts you change.
Published geometry combines figures confirmed by two or more independent sources with manufacturer data. Sources: fr.bmc-switzerland.com, us.bmc-switzerland.com. Last checked .
Key facts
- Brand
- BMC
- Model
- Fourstroke 01
- Model year
- 2026
- Frame
- THREE
- Type
- XC
- Geometry labels
- S, M, L, and XL
- Drivetrain
- Shimano SLX
- Rear shock
- RockShox SIDLUXE 3P Select+
- Wheels
- DT Swiss X 1900
- Geometry
- Complete for every size
- Manufacturer source
- us.bmc-switzerland.com
- Last checked
Things to know
Geometry-based comparisons with XC bikes, using measurements two or more sources agree on. They describe frame geometry, not a rider's hand position or tested ride feel.
- Less stack relative to reach than 9 in 10 XC bikes on Quiver: stack-to-reach ratio is 1.28, compared with 1.43 for this group. In this comparison, 560 other XC bikes have the same measurement on Quiver.
- Steeper seat angle than 9 in 10 XC bikes on Quiver: 75.6 degrees, where most sit near 74.2. In this comparison, 589 other XC bikes have the same measurement on Quiver.
Geometry by size
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Reach(mm) | 437 | 457 | 477 | 500 |
| Stack(mm) | 584 | 592 | 600 | 615 |
| 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) | 574 | 597 | 621 | 649 |
| Chainstay length(mm) | 432 (from the manufacturer) | 432 (from the manufacturer) | 432 (from the manufacturer) | 432 (from the manufacturer) |
| Wheelbase(mm) | 1139 | 1171 | 1188 | 1218 |
| BB drop(mm) | 53 | 53 | 53 | 53 |
| Standover(mm) | 725 | 725 | 725 | 765 |
| Seat tube length(mm) | 420 | 430 | 460 | 490 |
| Head tube length(mm) | 84 | 93 | 101 | 118 |
Own a Fourstroke 01? Keep track of it in Quiver.
Start with the catalog details available for this bike, then keep track of the parts you change.
Free on the App StoreFree on Google Play Free to download. If you already have Quiver, the button opens it.Stock build
17 parts
Frame
Sources for specifications
Sources: us.bmc-switzerland.comSuspension
Sources for specifications
Sources: us.bmc-switzerland.comSources for specifications
Sources: us.bmc-switzerland.comDrivetrain
Sources for specifications
Sources: bike-test.comSources for specifications
Sources: theloamwolf.com, OEM build page: canyon Spectral 2025 — canyon.com, sunshinebicycle.com, OEM build page: canyon Lux World Cup 2025 — canyon.comSources for specifications
Sources: enduro-mtb.com, polygonbikes.comSources for specifications
Sources: bikeexchange.comSources for specifications
Sources: polygonbikes.comWheels & Tires
Sources for specifications
Sources: OEM build page: canyon Lux 2025 — canyon.com, OEM build page: pivot Mach 4 SL 2022 — bikeexchange.comBrakes
Cockpit
Sources for specifications
Sources: us.bmc-switzerland.comSources for specifications
Sources: us.bmc-switzerland.comSeatpost & Saddle
✓Verified, two or more sources agreeMFrom the manufacturer
Quick answers
- Which size or configuration labels have geometry for the 2026 BMC Fourstroke 01 THREE?
- This page lists geometry under 4 labels: 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 Select, Shimano SLX XT, and DT Swiss X 1900.
- Which years of the BMC Fourstroke 01 are on Quiver?
- Quiver has the BMC Fourstroke 01 for 2026.
Own a Fourstroke 01? Keep track of it in Quiver.
Start with the catalog details available for this bike, then keep track of the parts you change.
Free on the App StoreFree on Google Play Free to download. If you already have Quiver, the button opens it.