The smallest pit bikes, such as a 50cc can go about twenty five mph (or less if they have a limiter), while the speediest types can go 60+ mph. The top speed mainly depends on how powerful the engine is and what the transmission and gearing are set up for. https://elliottnqidt.look4blog.com/75882438/5-simple-techniques-for-are-electric-unicycles-legal-in-uk