The smallest pit bikes, like a 50cc can go about 25 mph (or a lot less if they have a limiter), whilst the quickest types can go sixty+ mph. The best velocity mainly depends upon how strong the engine is and exactly what the transmission and gearing are create for. https://electric-unicycles18383.blogolenta.com/35040575/the-definitive-guide-to-are-electric-unicycles-easy-to-ride