Purchase the BMC Kaius 01 Two before July 31. 2026 and recieve a complimentary $900 Boulder Nordic & Cycle Sport gift card.
BMC performance gravel
KAIUS 01 TWO
A purpose-built gravel race bike combining aerodynamic integration, high-speed stability, 52 mm tire clearance and SRAM Force XPLR AXS 1×13 shifting.
Race platform
Speed without sacrificing control
Aerodynamic efficiency
Aerocore frame shaping and the second-generation ICS Carbon Aero cockpit reduce drag while preserving a stable, usable gravel-racing position.
Race-tuned handling
A revised front end, consistent 72 mm trail and size-specific fork rake balance quick steering with composure at speed.
Modern gravel clearance
The frame accepts measured tires up to 52 mm, supporting more traction, lower pressures and control over rough race courses.
Technology
Engineered for high average speeds
01 Premium Carbon
A race-oriented carbon layup targets efficient power transfer while maintaining useful compliance over broken surfaces.
ICS Carbon Aero Gen 2
The one-piece cockpit integrates cables and uses 12-degree flare for control in the drops.
Force XPLR AXS 1×13
Wireless electronic shifting, a full-mount derailleur and 10–46t cassette provide broad range and simple race-day operation.
CG 39 Carbon wheels
A 39 mm-deep tubeless carbon wheelset combines aerodynamic support with a star-ratchet rear hub.
Fit
Sizing guide
Rider-height guidance is a starting point. Confirm final size and cockpit fit with Boulder Nordic & Cycle Sport.
| Size | 47 | 51 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|
| Rider height | <166 cm | 166–174 cm | 172–180 cm | 178–186 cm | 184–192 cm | >190 cm |
Frame dimensions
Geometry
Frame measurements are in millimeters unless otherwise noted.
| Measurement | 47 | 51 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|
| Rider height | <166 | 166–174 | 172–180 | 178–186 | 184–192 | >190 |
| Reach | 385 | 392 | 396 | 400 | 405 | 409 |
| Stack | 521 | 541 | 561 | 581 | 606 | 631 |
| Bar width | 370/420 | 370/420 | 370/420 | 390/440 | 390/440 | 410/460 |
| BB drop | 79 | 79 | 79 | 79 | 79 | 79 |
| Crank length | 165 | 165 | 170 | 170 | 172.5 | 172.5 |
| Fork rake | 50 | 50 | 50 | 45 | 45 | 45 |
| Head tube | 88 | 109 | 126 | 147 | 173 | 199 |
| Head angle | 70.8° | 70.8° | 70.8° | 71.6° | 71.6° | 71.6° |
| Rear center | 425 | 425 | 425 | 425 | 425 | 425 |
| Seat angle | 74.3° | 74.3° | 73.8° | 73.8° | 73.8° | 73.8° |
| Seat tube | 429 | 449 | 471 | 485 | 509 | 533 |
| Standover | 739 | 758 | 779 | 795 | 815 | 838 |
| Stem length | 80 | 80 | 90 | 100 | 100 | 110 |
| Top tube | 531 | 544 | 559 | 569 | 587 | 598 |
| Trail | 72 | 72 | 72 | 72 | 72 | 72 |
| Wheelbase | 1010 | 1024 | 1027 | 1032 | 1045 | 1058 |
Build details
Specifications
Frame
Kaius 01 Gen 2, 01 Premium Carbon with Aerocore Design, ICS stealth cable routing, full-mount UDH, TCC Race compliance, flat-mount disc, 12×142 mm thru-axle
Fork
Kaius 01 Gen 2, 01 Premium Carbon, ICS stealth routing, TCC Race compliance, flat-mount disc, 12×100 mm thru-axle
Cockpit
ICS Carbon Aero Gen 2 one-piece carbon cockpit, 135 mm drop, 81 mm reach, 12° flare
Bar tape
BMC Tacky, 3 mm
Seatpost
Teammachine SLR 01 Gen 5 Premium Carbon aero seatpost; 0 mm offset sizes 47–51, 10 mm sizes 54–61
Saddle
Fizik Vento Argo X3, Kium rails, 140 mm
Crankset
SRAM Force AXS Wide, 42t
Power meter
SRAM Force XPLR AXS, single-sided
Cassette
SRAM Force XPLR, 10–46t
Rear derailleur
SRAM Force XPLR AXS, full-mount
Shifters
SRAM Force AXS
Gearing
1×13
Bottom bracket
SRAM DUB T47 85.5 Road Wide
Brakes
SRAM Force AXS hydraulic; CenterLine X 160/160 mm rotors
Wheels
BMC CG 39 Carbon, tubeless ready, 39 mm depth
Hubs
CG 39, star-ratchet, straight-pull, Center Lock
Tires
Continental Terra Competition Race Rapid, tubeless, 45 mm
Tire clearance
52 mm measured tire
Included
Aerocore bottle cages; Garmin, Wahoo and GoPro-compatible mount
Weight
7.8 kg, size 54 as pictured with accessories, without pedals
ASTM classification
Level 2
System weight limit
120 kg
Specifications and component availability may change without notice. Published weight is for size 54 as pictured with accessories and without pedals.
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