Twostroke 01 FOUR
BMC
Crosscountry
Twostroke 01 FOUR is a carbon cross-country mountain bike (2023), by BMC, from the Twostroke lineup. This model is best for riders who want a more active, performance-leaning off-road feel, with a setup that gives you a sporty, active riding position, and is best for smoother trails and efficient rolling. Standout strengths from the metrics include balanced, versatile speed for everyday riding, a comfort-leaning ride feel over longer rides, and all-round climbing capability rather than a narrow specialty. At the same time, what it gives up slightly is a value score that depends more on priorities than pure price efficiency. Add this bike to compare on MatchBikes.com and see how it stacks up against similar cross-country models.
Rating

Score Summary
Performance
Built for speed and efficiency
Fit
Dialed-in Fit & Comfort
Value
Specifications
General
Frame
Drivetrain
Wheels
Brakes
Cockpit
Seat
Geometry
| Measurement | SM | MD | LG | XL |
|---|---|---|---|---|
| Stack Reach Ratio | 1.4 mm | 1.35 mm | 1.31 mm | 1.29 mm |
| Bottom Bracket Height | 310 mm | 310 mm | 310 mm | 310 mm |
| Front Center | 696 mm | 715 mm | 741 mm | 767 mm |
| Rake | 44 mm | 44 mm | 44 mm | 44 mm |
| Trail | 109 mm | 109 mm | 109 mm | 109 mm |
| Stack | 581 mm | 591 mm | 601 mm | 616 mm |
| Reach | 415.5 mm | 438 mm | 458 mm | 478 mm |
| Top Tube Length | 590 mm | 611 mm | 631 mm | 651 mm |
| Seat Tube Angle | 75 ° | 75 ° | 75 ° | 75 ° |
| Seat Tube Length | 410 mm | 440 mm | 480 mm | 510 mm |
| Head Tube Angle | 67 ° | 67 ° | 67 ° | 67 ° |
| Head Tube Length | 87 mm | 93.5 mm | 106 mm | 122.5 mm |
| Chainstay Length | 418 mm | 418 mm | 418 mm | 418 mm |
| Wheelbase | 1105 mm | 1128 mm | 1154 mm | 1178 mm |
| Bottom Bracket Drop | 64 mm | 64 mm | 64 mm | 64 mm |
| Standover Height | 718 mm | 723 mm | 728 mm | 743 mm |
| Wheels | 29" | 29" | 29" | 29" |
| Rider Min Height | 162 cm | 170 cm | 178 cm | 187 cm |
| Rider Max Height | 172 cm | 180 cm | 189 cm | cm |




























































