Engineered by BMC's Impec Lab with advanced premium composite carbon technology, the Kaius 01 THREE is the ultimate gravel-racing machine. Built on a race-optimized geometry, it delivers the ideal balance of stiffness, lightness, and compliance, maximizing traction on loose terrain, front-end stability, and climbing efficiency. Our ICS cable integration and Aerocore design make it one of the fastest bikes ever crafted for gravel racing. Outfitted with Shimano GRX Di2 and CG 40 SL carbon wheels, the Kaius 01 THREE is ready to elevate your speed and performance on every ride.

Kaius 01 THREE brings gravel racing to its peak. Equipped with Shimano GRX Di2 and our CG 40 SL carbon wheels, it's built for tough terrains and podium finishes.

Features

• Speed Unbound: The innovative premium carbon layup uses ultra high-module fibres for unmatched stiffness resulting in maximum power transfer and minimal weight. Kaius boasts our Tuned Compliance Concept Race Technology for a comfortable ride on rough surfaces.
• Gravel Race-ready: Kaius: the fastest on gravel. The geometry features a longer reach to improve stability and increase traction. It's designed for 1x or 2x drivetrains and complies with SRAM Full Mount for UDH dropout or Hangerless Interface derailleurs.
• Integrated Cockpit System (ICS): The aesthetic simplicity and innovative functionality of the Integrated Cockpit is the epitome of Swiss engineering and design. ICS keeps shifter wires and brake lines in their place: out of sight.
• Aerocore Design: Kaius comes in at the highest level of functional integration with our Aerocore design. This evolved solution integrates the bottle cages into the frame to optimize aerodynamic performance.

Specifications

Frame	Kaius 01 Premium Carbon with Aerocore Design; ICS Technology Stealth Cable Routing; UDH (Universal Derailleur Hanger) Dropout; TCC Race Compliance Level; Flat Mount Disc; 12 × 142 mm Thru-Axle
Fork	Kaius 01 Premium Carbon; ICS Technology Stealth Cable Routing; TCC Race Compliance Level; Stealth Dropout Design; Flat Mount Disc; 12 × 100 mm Thru-Axle
Stem	BMC RSM 01; Integrated Cockpit System Technology
Handlebar	BMC HB D4 03, 0, 12; Alloy 6061; Endurance Geometry; 125 mm drop; 70 mm reach; 12° flare
Seatpost	Kaius 01 Premium Carbon D-Shaped Seatpost; 15 mm offset; D-Fender compatible
Saddle	Fizik Vento Argo X3; Kium rails; 140 mm width
Crankset	Shimano GRX FC-RX820-2
Chainrings	48/31T
Power Meter	4iiii Precision Gen3+ Power Meter (Non-Drive Side)
Cassette	Shimano Ultegra CS-R8101
Cassette Size	11–34T
Chain	Shimano CN-M8100
Front Derailleur	Shimano GRX Di2 FD-RX825
Rear Derailleur	Shimano GRX Di2 RD-RX825
Shifters	Shimano GRX Di2 ST-RX825
Drivetrain	2 × 12-speed
Bottom Bracket	Shimano Ultegra Press-Fit SM-BB72-41B
Brake Levers / Calipers	Shimano GRX BR-RX820 Hydraulic Disc
Brake Rotors	Shimano RT-CL800 Centerlock
Rotor Size (Front / Rear)	160 mm / 160 mm
Rims	CG 40 SL Carbon; Tubeless Ready; 40 mm depth
Hubs (Front / Rear)	CG 40 SL
Tires	Pirelli Cinturato Gravel H; 40 mm
Tubeless Setup	Tubeless-ready rims and tubeless tires
Included Accessories	Aerocore Design carbon bottle cages
Tire Clearance	44 mm measured tire
Weight (without pedals)	8.3 kg (Size 54, as pictured with all accessories)
ASTM Classification	Level 2
System Weight Limit	120 kg