Bicycle BMC Kaius 01 Three 2025

Engineered by BMCs 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.

Technology:
Speed Unbound
The innovative premium carbon layup uses ultra high-module fibres for unmatched stiffness resulting in maximum power transfer and minim

Race-Ready Gravel Geometry
Kaius was built with one purpose: to be fast on gravel roads. That is why we produced a gravel-specific frame with a longer reach shifting the front wheel forward to improve stability and increase traction on loose surfaces.

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:
Frameset
Frame:
Kaius 01 Premium Carbon with Aerocore Design | ICS Technology Stealth Cable Routing | UDH Dropout Universal Derailleur Hanger | TCC Race Compliance Level | Flat Mount Disc | 12 x 142mm Thru-Axle

Fork:
Kaius 01 Premium Carbon | ICS Technology, Stealth Cable Routing | TCC Race Compliance Level | Stealth Dropout Design | Flat Mount Disc | 12 x 100mm Thru-Axle

Cockpit
Stem:
BMC RSM 01 | Integrated Cockpit System Technology

Handlebar:
BMC HB D4 03, 0, 12 | Alloy 6061 | 125mm drop, 70mm reach, 12° flare

Seat
Seatpost:
Kaius 01 Premium Carbon D-Shaped Seatpost | 15mm Offset | D-Fender Compatible

Saddle:
Fizik Vento Argo X3 | Kium rails | 140mm

Drivetrain
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

Gears:
2 x 12

Bottom Bracket:
SHIMANO Press Fit SM-BB72

Brakes
Brake Levers / Calipers:
SHIMANO GRX BR-RX820

Rotors:
SHIMANO RT-CL800 | Centerlock

Rotor Size F/R:
160 / 160mm

Wheels
Rims:
CG 40 SL Carbon | Tubeless Ready | 40mm

Hubs F/R:
CG 40 SL

Tires:
Pirelli Cinturato Gravel H | 40mm

Tubeless Information:
Tubeless Rim | Tubeless Tires

Accessories
In the Box:
Aerocore Design Carbon Bottle Cages

Additional Information
Tire Clearance:
44mm

Weight without Pedals:
8.3 Kg

ASTM Classification:
Level 2

System Weight Limit:
120kg