Free speed

The average saving from an aero bike fit.

Source: AiRO

A digital wind tunnel. Free with every Roman.

Aerodynamic drag is the biggest force you ride against. AiRO measures it, so your fit is based on proof, not guesswork. More power saved in a single fit than most riders gain in a whole season.

AiRO aero bike fit

£350Free

  • Your own Digital Aero Twin
  • Airflow simulated across different positions
  • Set up in your fastest position
  • Included with every Roman bike

AiRO is only available through trained, certified AiRO fitters.

Choose your RomanHow it works
Roman AiRO

In partnership

The wind tunnel, reimagined.

For years, real aero testing meant a wind tunnel few riders would ever see. AiRO changes that. It builds a digital twin of you, sends virtual air flowing around your position, and shows where your speed is hiding.

We've teamed up with AiRO to bring that technology into our fit studio, and into every Roman we build.

Choose your Roman
Airflow simulated around a rider's Digital Aero Twin.
  • 01

    Computational fluid dynamics

    The same airflow science trusted in Formula 1 and WorldTour cycling.

  • 02

    Your Digital Aero Twin

    A 3D model of you, built from your height, weight and a photo, that holds perfectly still every time.

  • 03

    Wind tunnel validated

    Tested against real wind tunnel results, and built on peer-reviewed research.

Standard bike fitting

Just want a regular bike fit?

Book a road, gravel or frame-size fit for any bike with our fitters at trainSharp. Every fit is carried out by experienced riders and coaches.

trainSharp, Shortgate, just outside Lewes, East Sussex

Get in touch now!

Fits available

  • Basic Frame & Size FitFind the right frame size before you buy£90
  • Road Bike FitComfort, power and efficiency on the road£250
  • Gravel Bike FitA stable, comfortable setup for long mixed-terrain rides£250
  • BioRacer TT & Tri Aero Fit (AiRO)Aero efficiency and power for time trials and triathlonfrom £350

Why AiRO

Proof, not guesswork.

Every rider knows aero matters. Until now, finding out what actually makes you faster has been hard.

With your RomanAiRO fit Wind tunnel Field testing Guesswork
Measures your aero drag
Easy to accessIn our studio Hard to access
CostFree with your Roman Expensive ––
Unaffected by weather –
Proof you're faster Depends on conditions

Comparison based on AiRO's published information.

Choose your Roman