The BMC Kaius 01 represents the cutting edge of gravel racing performance. Built with racing as its sole purpose, this frameset raises the bar from its legendary predecessor by delivering a 7 percent aerodynamic gain at 40 kph while adding 3 percent additional stiffness without adding weight. For riders ready to build without compromise, the Kaius 01 delivers a platform that stays fast when the course turns rough and the pace stays high. Gravel racing has evolved dramatically, and the Kaius 01 evolves with it. The geometry has been redesigned specifically for modern gravel demands: sharper front-end response for precise steering through technical sections, composed handling at speed, and optimized proportions for the wider tires that define contemporary gravel racing. With 51mm tire clearance, you have total freedom to choose the traction and speed you need for any surface from scorched Spanish deserts to horizonless American gravel. The refined compliance characteristics, engineered through BMC&';s Tuned Compliance Concept, preserve your body from shocks while keeping traction connected to the ground, translating directly into speed across rough terrain. The Halo fork features a wide crown design that pushes airflow efficiently around the wheel and tire while providing generous clearance for aggressive tire choices. The AeroCore downtube applies BMC&';s proven aerodynamic philosophy, sculpted to work faster with your hydration setup. This is aero engineering that accounts for real-world racing conditions. The aero head tube echoes the optimized profile of BMC&';s road racing platforms, while the premium ICS Carbon Aero cockpit keeps cables hidden to maintain clean aerodynamics and reduced air disruption. The AS10 seatpost combines lightweight construction with aerodynamic shaping and compliance tuning, engineered specifically for the demands of gravel racing. Finished in raw carbon with light lacquer, the frameset is supplied with frame, fork, and seatpost, featuring a future-proof Full Mount and UDH interface for total drivetrain flexibility. The stripped-back race aesthetic is ready for custom paint or left as-is for minimalist appeal. Key Features Frame - BMC Kaius 01 Premium Carbon, 51mm tire clearance, Full Mount/UDH interface, Tuned Compliance Concept Tire Clearance - 51mm Weight - 1855g in size 54.