Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.
We offer FREE DELIVERY of your bike to your home or place of work. Once you've placed your order, our Customer Care team will be in contact to offer a convenient delivery date of your choice.
We've partnered with Pedalsure to offer you 30-DAYS FREE bike insurance on new bikes over £400. Visit our Cycle Insurance page to learn more and claim.
BMC Kaius 01 TWO Disc Gravel Bike
The BMC Kaius 01 TWO is a race-ready, performance disc gravel bike that delivers speed over mixed terrain. The frame is constructed from premium carbon that maximises stiffness while keeping weight to a minimum. Tuned Compliance Concept Race Technology creates a more comfortable ride, helping to soak up the effects of harsh roads and preventing fatigue. Progressive race geometry incorporates a longer reach and shorter stem into the design for improved stability, increased traction and responsive handling.
BMC's Integrated Cockpit System (ICS) 2 not only gives the bike a sleek aesthetic but also reduces weight further, while Aerocore evolved design minimises drag by integrating the bottle cages into the frame. The frame itself features reinforcements in key areas to protect against damage that may be caused by riding fast off-road, such as in the event of rock strikes.
SRAM Rival eTap AXS drivetrain and brakeset incorporate much of the technology of the higher-level wireless electronic offerings without adding much extra weight, delivering impressive performance. Shifting is instant and precise, and the combination of 43/30-tooth chainrings and wide 10-36 tooth cassette ensures there are plenty of gears for steep climbs, fast flats and descents alike. Hydraulic disc brakes allow fast stopping for confidence at speed and in all conditions.
BMC's CRD-400 wheels are ideal for gravel and adventure riding, with the wide, tubeless-ready rim able to accept bigger volume tyres. They're fitted with Pirelli Cinturato Gravel H 40mm tyres that are ideal for smooth rolling and grip on hard-packed surfaces. There's room for 44mm tyres so you can go wider still, and compatibility with both 1x and 2x drivetrains means you can fine-tune the bike to your preferred setup.
- Innovative premium carbon layup uses ultra high-module for unmatched stiffness, resulting in maximum power transfer and minimal weight
- Tuned Compliance Concept Race Technology for a comfortable ride
- Progressive race-tuned gravel geometry with a longer reach and shorter stem, for stability and responsive handling
- Integrated Cockpit System (ICS) 2 for weight savings, high stiffness, clean aesthetics and integrated device mounts for the most popular devices
- Aerocore evolved design integrates the bottle cages into the frame to optimise aerodynamic performance
- Targeted reinforcements protect the frame against the demands of gravel racing
- SRAM Rival eTap AXS drivetrain and hydraulic disc brakes
- BMC CRD-400 wheels and Pirelli Cinturato Gravel H 40mm tyres
- 44mm tyre clearance
|Frame||BMC Kaius 01 Premium Carbon with Aerocore Design, ICS technology, Stealth Cable Routing, integrated Aerocore bottle cages, Stealth dropout design, TCC Race compliance level, flat mount disc, 12x142mm thru-axle|
|Fork||BMC Kaius 01 Premium Carbon, ICS technology, Stealth Cable Routing, TCC Race compliance level, Stealth dropout design, flat mount disc, 12x100mm thru-Axle|
|Stem||BMC ICS2 - Integrated Cockpit Design|
|Handlebar||BMC RAB 02, ergo top shape, compact bend|
|Front Brake||SRAM Rival eTap AXS HRD hydraulic disc, Paceline 160mm rotor|
|Rear Brake||SRAM Rival eTap AXS HRD hydraulic disc, Paceline 160mm rotor|
|Brake Levers||SRAM Rival eTap AXS HRD|
|Front Derailleur||SRAM Rival eTap AXS|
|Rear Derailleur||SRAM Rival eTap AXS wide, 12-speed|
|Shift Levers||SRAM Rival eTap AXS HRD, 12-speed|
|Chain||SRAM Rival, 12-speed|
|Cassette||SRAM Rival AXS XG-1250, 10-36T|
|Crankset||SRAM Rival AXS wide, 43-30T|
|Front Wheel||BMC CRD-400, tubeless-ready|
|Rear Wheel||BMC CRD-400, tubeless-ready|
|Front Tyre||Pirelli Cinturato Gravel H, 700x40mm, clincher|
|Rear Tyre||Pirelli Cinturato Gravel H, 700x40mm, clincher|
|Saddle||Fizik Vento Argo R5|
|Seatpost||BMC Kaius 01 Premium Carbon D-Shaped seatpost, 15mm offset|
|Pedals||Available to be purchased separately|
|Accessories||Aerocore bottle cages|
|Weight Limit||120kg (combined weight of bicycle, rider and cargo)|
|Manufacturer Claimed Weight||1.785kg (frame, fork, seatpost and cockpit, size 54) / frame - 910 grams / fork - 400 grams / seatpost - 160 grams / cockpit - 315 grams|
Built, Checked, Tuned and Tested
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.