3. Ecosse ES1 Spirit – $3.6 million
When a bike company wants you to take two-week training before trying to ride one of its models, then you know that something is as radical as it can get. This bike designer stepped out of the box when it comes to traditional manufacturing. There is no chassis framework to speak of which means that swingarm and rear suspension are attached to the gearbox, while front suspension is to the engine. This allows the bike to weigh just around 265 pounds. The front suspension consists of twin A-arms, projecting forward, their apices defining a steering axis and carrying an upright from which projects the front-wheel spindle. The lower A-arm is, in effect, a single-sided swingarm.
It has integrated bespoke transverse inline-4 engine, and its rider is positioned in a way that allows the knees to be close to the body for greater ergonomics and control. Another thing to know is that there are only 10 examples of this bike.