Assault AirBike Classic Review: Brutal, Loud and Worth It

The Assault AirBike Classic is the machine that gave the air bike its reputation, and its nicknames. It is the bike you find in the corner of every CrossFit gym, and the one people quietly avoid. Instead of a flywheel and a resistance knob, a 25 inch steel fan provides the resistance, and because you are pushing against moving air, the faster you go the harder it fights back. There are no levels to set and nowhere to hide. It is expensive at around £699, it is extremely loud, and it is one of the best conditioning tools you can buy for a home gym.

The verdict up front is that this machine is worth the money for the right person and a waste of it for everyone else. What you are paying for is durability and honesty: powder-coated steel, 20 sealed cartridge bearings, a 5 year frame warranty, and a resistance system that cannot be cheated. What you are not paying for is refinement, quiet running or a clever screen.

Who it is for

This bike suits people who train in short, hard bursts. If your sessions involve intervals, sprints, conditioning finishers or anything measured in calories and watts rather than miles, the Assault AirBike is close to a perfect tool. It also suits anyone who wants a machine that will outlast them, and heavier riders, thanks to the 159kg limit.

It is the wrong bike for steady, comfortable cardio. If you want to sit and spin for an hour while watching a film, you will hate the noise, the upright riding position and the price. Our best spin bike UK guide covers far better machines for that job. If you want the air bike concept for less money, our best air bike UK guide has cheaper alternatives, though none of them are built like this.

Build and ride feel

The build is the whole argument for this bike. The frame is heavy-duty powder-coated steel, the fan blades are steel rather than plastic, and Assault has put sealed cartridge bearings, twenty of them, into every pivot and moving part. That last detail is the one that matters over years rather than weeks: cheap air bikes develop play, creaks and wobble in the pedal and arm linkages, and this one largely does not. The 5 year frame and 2 year parts warranty tells you what the manufacturer expects of it.

In use it feels planted and mechanical in the best sense. There is no flex when you throw everything at it, the arms and pedals move in a solid, connected way, and at 43kg it stays where you put it. The trade-off is that it is genuinely a pain to move, and the transport wheels only help so much.

The ride itself is unlike a spin bike. You are upright, pushing and pulling the arms while driving the pedals, so your lats, chest, shoulders and legs all work at once. That full-body demand is exactly why it drives your heart rate up so fast and why 20 seconds on it feels considerably longer than 20 seconds.

The resistance, the console and the noise

The resistance system deserves proper explanation because it is the reason to buy this machine. There are no levels. The fan pushes air, and air resists in proportion to how fast you move it, which means the bike is exactly as hard as you decide to make it on that rep, that second. A beginner can warm up gently on it and a national-level athlete can be destroyed by it, on the same machine, with no adjustment. Nothing with a magnetic brake and twenty numbered levels can do that.

It also means the machine is completely honest. You cannot dial the resistance down and pretend. If you slow down, it gets easier, and the console shows exactly what you produced in watts. That combination makes it superb for intervals, and the built-in Tabata and custom interval programmes are genuinely useful rather than marketing filler.

The console is where the Classic shows its age and its price point. It is a clear, high-contrast LCD that tracks watts, RPM, calories, heart rate, distance, time and an odometer, and it runs on batteries. What it does not have is Bluetooth or any app connection, so there is no syncing your sessions to your phone. The newer Pro and Elite models address this. For a £699 machine in 2026, that is a fair criticism, though in practice most people using an air bike are watching the calorie counter and nothing else.

Then there is the noise, and it needs saying plainly rather than softened. This bike is loud. The fan is the resistance, so effort and volume are the same thing: go hard and it roars. It is the most consistent complaint from owners and it is the single most likely reason to regret the purchase. In a garage or a shed it is a non-issue. In a first-floor flat with a neighbour below and a baby asleep next door, it is a genuine problem that no mat or placement will fix.

Is it worth it?

For the right buyer, comfortably. Short, hard interval work of the kind this bike is built for is a very time-efficient way to build cardiovascular fitness, and regular activity of this sort is among the most effective things you can do for your heart (British Heart Foundation on physical activity and heart health). It makes hitting the weekly activity the NHS recommends straightforward, since vigorous activity counts double against the 150 minute moderate target (UK physical activity guidelines), and a hard half hour on a machine that works your whole body burns a serious number of calories (Harvard Health calorie estimates).

It is also one of the best rated air bikes on Amazon, averaging around 4.8 out of 5 across more than two thousand ratings in the larger US market, which is a rare level of consensus for a machine this punishing.

The honest framing is this: £699 buys you a machine you will still own in ten years, which cannot be said for most cardio kit. If you will use it two or three times a week for hard intervals, the cost per session becomes trivial and nothing else does the job as well. If it is going to be an occasional gentle spin, buy something cheaper and quieter. For the wider picture see our best air bike UK guide, our take on whether exercise bikes are good for cardio, and the full exercise bikes section. If you are torn between conditioning machines, rowing machine vs spin bike is a useful comparison.