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Today’s Deals2026 BMC
Kaius 01 FOUR
A carbon frame gravel bike with upper mid-range components and sram rival hydraulic disc brakes.
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Manufacturer Price
$8,399| Weight | 8.3 kg |
|---|---|
| Frame | Carbon |
| Suspension | Rigid |
| Fork | Carbon |
| Wheels | 700c Carbon |
| Drivetrain | 1 × 13 Electronic |
| Groupset | Rival XPLR AXS E1, Rival AXS |
| Brakes | SRAM Rival Hydraulic Disc |
Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.
Compare the full Kaius model range
View Comparison< 167cm
165cm – 174cm
172cm – 180cm
178cm – 186cm
184cm – 192cm
190cm +
None yet.
Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.
Apr 2026 · Zach Overholt
The new Kaius 01 is more aero, stiffer, lighter, and adds more tire clearance. Impressive.
Revised frameset: 1,469g total (998g frame, 400g fork, 134g seatpost), 63g lighter than previous, 3% greater stiffness, 4% weight savings
Aerodynamics: 12% improvement in bike-only aero, 1.05% system-wide speed gains with 45mm tires
Tire clearance up to 52mm with ISO 6mm clearance standards
T47 x 85.5 threaded bottom bracket
External cargo system with top tube bag mounts, Cargo Plate, AeroCore bottle cages, and lower downtube mount
1x specific with 32t-50t chainring compatibility, integrated chain guide, UDH dropout
Geometry adjustments: 5mm shorter reach, 11mm higher stack, 5mm longer chainstays
Available in six sizes (47-61cm) with second-gen ICS Carbon Aero Cockpits
Stiff fork and one-piece cockpit transmit big impacts on rough terrain
No in-tube storage (external only, which may be a con for some)
Apr 2026 · Ronan Mc Laughlin
One of the raciest gravel bikes gets even racier while adding some practicality.
Apr 2026 · Jan Fock
BMC Kaius 01 2026 Review: Aero, Light and Fast, but How Good Is the New Gravel Racer?
Snappy acceleration thanks to low weight
Agile handling
Well-judged compliance
Impressive versatility for a race bike, with generous tire clearance and plenty of mounting points
None
Feb 2025 · Alvin Holbrook
Swiss manufacturer says 'certain fork steerer tubes have separated under heavy duty riding conditions' of its BMC Kaius 01 gravel bike.
May 2023 · Warren Rossiter
BMC’s flagship Kaius model is an ultra-light, racing, aero superbike designed for… gravel
Very light frame
Exceptionally fast in the right conditions
Great specification
Can be a handful on rough technical terrain
Jan 2023 · Sam Challis
The new Kaius makes gravel rides feel like road rides
Fast ride feel off-road
Comfort levels
Good attention to detail
Forward-thinking cockpit design
Quirky on-road handling
Price
Colour
| 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 Hanger Standard: UDH Tire Clearance: 44c Color: Black / Neon Red |
|---|---|
| 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 |
| Bottom Bracket | SRAM Press Fit DUB |
| Stem | BMC RSM 01 | Integrated Cockpit System Technology |
| Handlebar | BMC HB D4 03, 0, 12 | Alloy 6061 | Endurance Geometry | 125mm drop, 70mm reach, 12° flare |
| Saddle | Fizik Vento Argo X5 | 140mm |
| Seatpost | Kaius 01 Premium Carbon D-Shaped Seatpost | 15mm Offset | D-Fender Compatible Type: Rigid |
| Rear Derailleur | SRAM Rival XPLR AXS (RD-RIV-1E-E1) |
|---|---|
| Crank | SRAM Rival XPLR AXS Wide (FC-RIV-1W-E1) |
| Shifters | SRAM Rival AXS (ED-RIV-E1) |
| Cassette | SRAM Rival XPLR (CS-XG-1351-E1) |
| Chain | SRAM Rival (CN-RIV-E1) |
| Brakes | SRAM Rival AXS (ED-RIV-E1) Type: SRAM Rival Hydraulic Disc |
| Rims | CG 40 Carbon | Tubeless Ready | 40mm |
|---|---|
| Tires | Pirelli Cinturato Gravel H | 40mm |
| Disc Rotors | SRAM Paceline | Centerlock |
First added June 21
Last updated June 20