In karting circles, Hartman products are notable for their tubular steel frames, front disc brakes, rack-and-pinion steering, ...

000W performance model that rockets up to 65 mph - which is just about fast enough to make you question your life choices. This is a pimped-out go-kart too, because it even comes with LED ...

While they specialize in making go-karts and minibikes as stupid fast and dangerous as possible, they do all sorts of things relating to small-displacement motors. One of their latest videos is a ...