The BMC Fourstroke R 01 represents the cutting edge of XC racing technology, full factory possibilities for a race-winning privateer who demands the lightest, fastest full-suspension mountain bike frameset available. Engineered in BMC&';s Impec Lab and sharpened on the race circuit, this 01 Premium Carbon frameset comes race-ready with an included O;hlins TXC2 Air rear shock, giving you the foundation to build your ultimate XCO machine around proven, championship-winning geometry. This is a machine designed for the world&';s fastest XC racers and the most brutal racecourses in pursuit of victory. With a legacy of Olympic, World Championship, and World Cup podiums, the Fourstroke proves that winning is something it excels at. The 01 Premium Carbon construction is an exercise in balancing weight, power transfer, and control-this frameset isn&';t just light, it&';s fast. Every gram has been justified through meticulous attention to detail, from the precise carbon layup matrix to race-approved engineering. The progressive XC race geometry delivers maximum confidence on modern technical race courses without sacrificing razor-sharp responsiveness. A 66.5-degree head angle and extended reach provide stability and control through the steepest, loosest terrain. The optimized APS suspension pivots are tuned for maximum traction and efficiency, with their placement proven on the race track to deliver measurable advantages in both feel and real-world performance. The revolutionary Autodrop integrated dropper seatpost is your secret weapon-a fully automatic, squat-free system that drops and rises with a simple lever push, enabling on-the-fly seatpost adjustment for maximum control and speed on technical XC tracks. Fully guided cable routing and chainstay protection minimize noise, while a rotation-limiting headset prevents frame damage during crashes. The frame accommodates 62mm tire clearance and two full-size bottles, a rare combination on a platform this aggressive. Key Features Frame - BMC Fourstroke R 01, 01 Premium Carbon Suspension - O;hlins TXC2 Air rear shock with APS optimized suspension pivots Weight - 3160g | Size M