Lenzeheide, Switzerland, was the beautiful setting for the introduction of BMC’s new flagship 29er – the Fourstroke FS01. As the name suggests, the Fourstroke is a 4in (100mm) travel, full carbon, 29er, but rather than pigeonholing it as a pure XC bike or marathon racer, BMC is pitching it as a far more versatile machine with the capability to tackle technical terrain and put a smile on your face at the same time. At around 10kg (22lb) it will certainly appeal to the race crowd, though details such hose routing for a RockShox Reverb Stealth and a proprietary chain guide point to a broader remit.
Look out for more details in the August issue of MBR, but in the mean time, here are a few more details and a little video of the Fourstroke in action.
- Frame: full carbon, APS suspension with 100mm travel, post mount disc mount, 12x142mm rear axle, press fit BB90, sag indicator, integrated chain guide and bottom bracket chain catcher, internal RockShox Stealth Reverb routing
- Shock: Fox Float CTD Kashima
- Fork: Fox Float 32 CTD Kashima
- Drivetrain: Shimano XTR 30 speed with Shadow Plus
- Brakes: Shimano XTR Race
- Components: Easton
- Wheels: Easton EA90 XC
Angle finder (size Medium):
- HA: 70
- SA: 73.5
- Chainstay: 445mm
- BB drop: -40mm
- Top tube: 610mm