BMC performance gravel
2027 BMC Kaius 01 TWO
A purpose-built gravel race bike combining refined aerodynamics, high-speed stability, 52mm tire clearance and SRAM Force XPLR AXS 1×13 shifting.
Race speed with more control
Designed from the start for racing, the second-generation Kaius 01 sharpens power transfer while adding stability and confidence over broken ground. BMC reports a 7% aerodynamic improvement at 40km/h, while revised geometry, added compliance and clearance for measured tires up to 52mm broaden its capability on demanding gravel courses.
01 Premium Carbon
The Kaius 01 Gen 2 carbon chassis is tuned for efficient power transfer, low weight and controlled compliance over rough surfaces.
Refined aerodynamics
Aerocore frame shaping and Impec Lab development reduce drag while preserving a practical position for long, fast gravel racing.
Race-tuned geometry
Size-specific fork rake and a consistent 72mm trail target quick steering, predictable front-end grip and confidence at speed.
52mm tire clearance
Clearance for a measured 52mm tire supports greater traction, lower pressures and improved control on increasingly technical courses.
Force XPLR AXS 1×13
Wireless electronic shifting, a full-mount rear derailleur, 42T chainring and 10–46T cassette deliver a wide race-ready range.
7.8kg complete weight
BMC lists the size 54 at 7.8kg as pictured with accessories and without pedals.
Engineered for high average speeds
Every major system on the Kaius 01 TWO supports race efficiency: integrated aerodynamics, controlled compliance, broad tire clearance and a component package selected for speed across loose and changing surfaces.
ICS Carbon Aero Gen 2
The one-piece carbon cockpit integrates cables and uses a 135mm drop, 81mm reach and 12-degree flare for control in an aggressive race position.
TCC Race compliance
Frame and fork construction are tuned to preserve pedaling response while reducing fatigue and maintaining traction over broken ground.
CG 39 carbon wheels
The 39mm-deep tubeless-ready carbon wheelset combines aerodynamic support with straight-pull hubs and a star-ratchet drive system.
Integrated power meter
The SRAM Force XPLR AXS crank includes a single-sided power meter for pacing, training and race analysis.
Aerocore bottle integration
Included Aerocore bottle cages work with the frame profile to support the bike's aerodynamic design.
45mm race tires
Continental Terra Competition Race Rapid tubeless tires balance speed, grip and volume for mixed gravel surfaces.
Sizing guide
BMC rider-height recommendations are a starting point. Rider proportions, mobility and preferred handling all affect final fit.
| Size | 47 | 51 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|
| Rider height | <166cm | 166–174cm | 172–180cm | 178–186cm | 184–192cm | >190cm |
Contact Boulder Nordic & Cycle Sport for fit confirmation before purchase.
Geometry
Frame measurements are in millimeters unless otherwise noted.
| Measurement | 47 | 51 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|
| Reach | 385 | 392 | 396 | 400 | 405 | 409 |
| Stack | 521 | 541 | 561 | 581 | 606 | 631 |
| Head angle | 70.8° | 70.8° | 70.8° | 71.6° | 71.6° | 71.6° |
| Seat angle | 74.3° | 74.3° | 73.8° | 73.8° | 73.8° | 73.8° |
| Top tube | 531 | 544 | 559 | 569 | 587 | 598 |
| Head tube | 88 | 109 | 126 | 147 | 173 | 199 |
| Rear center | 425 | 425 | 425 | 425 | 425 | 425 |
| BB drop | 79 | 79 | 79 | 79 | 79 | 79 |
| Trail | 72 | 72 | 72 | 72 | 72 | 72 |
| Wheelbase | 1010 | 1024 | 1027 | 1032 | 1045 | 1058 |
| Standover | 739 | 758 | 779 | 795 | 815 | 838 |
| Stem length | 80 | 80 | 90 | 100 | 100 | 110 |
| Bar width | 370/420 | 370/420 | 370/420 | 390/440 | 390/440 | 410/460 |
| Crank length | 165 | 165 | 170 | 170 | 172.5 | 172.5 |
Complete specifications
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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