Assault AssaultBike Classic
The chain-driven air bike that defined the category — and the one whose 300 lb user limit and drive noise you should check before the price.
Specs
| Resistance | Air, fan |
|---|---|
| Drive system | Chain drive |
| Frame material | Steel, commercial |
| Max user weight | 300 lb |
| Assembled dimensions | 50.9 x 23.3 x 48.4 in |
| Assembled weight | 98.1 lb (44.5 kg) |
| Boxed dimensions | 51.25 x 11.25 x 35.3 in |
| Boxed weight | 109.1 lb (49.5 kg) |
| Energy consumption | No electricity required |
| Assembly | 35 to 45 minutes, tools included |
These figures are copied from Assault Fitness’s own published specs and were last checked on 2026-08-31. Manufacturers revise products without notice, and variants differ. Confirm anything your decision depends on with Assault Fitness before you buy.
Choose this one if
- You want the air bike that most workout programming is actually written for
- You want a conditioning piece that needs no power outlet
- You would rather spend less and accept a chain drive over a belt
The detail
The AssaultBike is the machine most conditioning programming assumes. When a workout says "20 calories on the bike", it was almost certainly written against one of these — which matters, because calorie counts differ enough between air bikes that the same workout is a different workout on a different machine.
Air resistance means it is self-scaling: pedal harder and the fan pushes back harder, with no setting to adjust. That is the whole appeal for interval work, and it is why an air bike hurts in a way an exercise bike does not.
The drive system is the specification to weigh. The Classic is chain-driven, where the Pro X uses a belt. A chain is cheaper and entirely serviceable, but it is louder, it stretches, and it wants occasional lubrication. If the bike lives in a shared space or above someone, the belt models are worth the difference — and either way, an air bike is loud by nature because the fan is the point.
Check the 300 lb user limit before anything else. It is the lowest of the three AssaultBikes — the Pro X allows 330 and the Elite 350 — and it is a hard constraint rather than a guideline.
Needing no electricity is underrated for a garage. There is no outlet to find, nothing to trip a breaker, and nothing that stops working when a firmware update goes wrong. At 98 lb it is also movable by one person, unlike most cardio of this size.