The Assault AirBike Elite has been designed to give you the closest to a gym or box experience as you can have from home. With a massive steel frame, solid steel cranks, corrosion resistance, and a solid aluminum seat post and slider, there is no question that this bike will go for years. Designed for strength, durability, and hardcore use, you will find yourself coming back day after day for more burn. In fact, we say this bike doesn't just bring on the burn. It brings on the inferno.