What is the BMC Kaius 01 Frameset used for?

The BMC Kaius 01 Frameset is used to build a capable gravel bike ready for long rides, mixed terrain, and fast racing on tougher surfaces.

Why choose the BMC Kaius 01 Frameset?

Choose the BMC Kaius 01 Frameset for a lightweight, stiff carbon platform with integrated bottle cages and clean, aero‑mavourled routing that keeps gear tidy and performance high.

Who is the BMC Kaius 01 Frameset designed for?

It’s designed for riders seeking a premium gravel race platform that handles rough roads with confidence while maintaining efficient, race‑ready performance.

BMC Kaius 01 Frameset Grey

Find Your Size

Step 1: Measure your height

Take off your shoes
Stand with your back straight against a wall
Balance a book on your head to mark your height on the wall
Measure your height by the distance from the floor to the mark

Your height:

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Step 2: Adjust your inseam

Based on your height, we’ve calculated a starting point.
You can measure your inseam by tucking a book between your legs so there is pressure but it isn’t uncomfortable.
Inseam typically falls with 5cm of the average.

Your inseam:

Find Your Size

Your results

For the BMC Kaius 01 Frameset Grey we suggest the following size.

More relaxed More aggressive

XXL

Height: --

Inseam: --

Adjusted Height: --

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PERFECT RIDE GUARANTEE

If you don't love it, you can swap it, up to 30 days from purchase!* Learn more »

FREE BIKE BUILD

We'll build your bike for free when you click and collect at any 99 Bikes store.

FIRST FREE TUNE-UP

Every bike comes with a complimentary free tune-up and safety check. Learn more »

Rigid lightweight build

The Kaius 01 frameset combines low weight with stiffness for confident acceleration and sprint capability.

Integrated aerocore design

Clean lines and bottle integration reduce drag without compromising access.

Versatile gravel performance

Balanced geometry and tyre clearance suit confident all‑weather gravel adventures.

XXL

Not sure what sized bike is best?

Answer a few short questions and we'll make a recommendation on which size is best for you.

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Legend

Available size

Current size

Unavailable size

Suggested sizing

Stack

510

530

550

570

595

620

Reach

390

397

401

405

410

414

Top Tube Length

546

559

569

579

592

604

Seat Tube Length

428

452

468

493

513

533

Seat Tube Angle

73.0

Fork Length

387

Head Tube Length

106

123

144

170

196

Head Tube Angle

71.0

72.0

Handlebar Height

Bottom Bracket Drop

Chainstay Length

Wheelbase

Standover Height

684

722

756

780

798

818

Minimum Seat Height

Maximum Seat Height

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