Terrain Dynamics uses cutting edge technology for real time testing of aerodynamic efficiency. The system measures your CdA (coefficient of drag) as you ride and enables us to conclusively determine the optimal position and equipment combination for you and your bike. Creating real-world changes to your cycling performance.

100 watt Resistance 
Ultralight 1.5 kgs* 
5 Second Setup
Reduced ON-road speeds


The AIRhub™ is a precision electromagnetic braking system. It is contained within a hub that fits into your front forks, just like a normal bicycle wheel. Our patented resistance technology affords you unprecedented control of your training environment. We’ve made it user-friendly and simple to control through our free Smartphone app. The AIRhub™ is easy to travel with and much lighter than a normal stationary trainer*. Train out on the open road; where you want to be.

Developed over four years with a focus on simplicity for the rider, our design is self powered with no batteries or need for replacement parts. 


Your smartphone acts as the brain of the AIRhub™, precisely controlling every action it makes. We've created a number of modes to create the perfect training conditions to suit your ride. The AIRhub™ does all the hard work, leaving you to focus on your riding.

For more information about training with the AIRhub™ click below.

Training modes


Aero Testing professionals from Terrain Dynamics run your testing session. They are equipped with the latest Track Aero System from AlphaMantis, the world leader in Aero Testing. Using this they are able to help you improve your CdA to increase your cycling efficiency.

Step 1

Through our smartphone application you can control the AIRhub™. Add up-to 100 watts to your training while riding. Lower your speed to increase safety and accommodate other riders.

Step 2

The AIRhub™ listens to your heart rate and can apply resistance in real time to keep you at your specified zone. Pick a target heart rate and the AIRhub™ will automatically modify resistance to keep you there. In a big group the AIRhub™ will keep your heart rate up when everyone else is slacking off, it will then drop resistance when you charge to the front. 

Step 3

Increase your Coefficient of Drag to simulate the headwinds. Make adjustments in real time. This can help maintain your threshold and increase climbing ability.

Viiiva heart rate monitor
Bluetooth Low Energy
Quad lock PHONE Case


Matt Burton

Professional Tri-Athlete

"I am a sucker for pain and as an athlete that’s always traveling, AIRhub Resistance training brings consistency and results to my training wherever I go."

Bevan Tarratt

CFO Pura Vida Energy

"I haven’t got time to spend hours out on the road each day. I work 60 hours a week and I want to be fit. AIRhub resistance training helps me train hard, train safe and train efficient."

Andrew Patterson

CAT 1 Rider

"The AIRhub lets me train how I want, when I want. It's perfect to extend the length and intensity of my hill efforts to threshold or above. It's especially useful while riding in a bunch as i’m still able to get my training done while others are riding at a slower pace."


Brad Hall

Cycling Coach

"The device takes the quality of indoor training outdoors. Resistance units enable far better prescription of exercise intensity based on individual physiology. This is why I recommend the AIRhub to anyone wanting to improve as it enables one to do so, ‘without any junk miles’. Easy to use and program, the device is a must for any ability athlete wanting to take their fitness to the next level, and fast."

Angus Burrell

Cycling Coach

"Since testing the AIRhub on varied terrains and courses I have noticed the worth of this system as a training tool for both coaches and athletes. I have found the hub particularly useful for Time Trial training at lower, safer speeds. Coaching at FTP Training, an idea we have always embraced is Quality VS Quantity. For the modern time-crunched cyclist this is a tool that can very easily increase training quality increasing the bang for buck of your training."