When race engineering meets full-gas fun, you get the Fourstroke R 01, our lightest full-suspension mountain bike frameset. Engineered in our Impec Lab and sharpened on the race circuit, this 01 Premium Carbon frameset floats up the climbs while progressive XC race geometry encourages you to charge downhill. But the real dark magic? APS suspension pivots tuned for maximum traction, paired with the ultra-efficient Autodrop integrated dropper seatpost. This frame-only variant comes ready for your dream XCO build. Raw carbon finish with removable decals means custom paint is easy and it includes the fully tunable Öhlins TXC2 Air rear shock. Now go crush it.