Highside

A highside is a dangerous type of motorcycle crash where the rider is violently thrown over the top of the bike after the rear wheel loses traction and then suddenly regains grip.

This crash typically begins when the rear tire slides sideways due to excessive throttle, improper braking, or slippery conditions. When the tire suddenly regains traction, it creates a violent whipping motion that launches the rider into the air. Unlike a lowside crash where the bike slides out underneath the rider, highsides are more dangerous because of the height and force with which riders are thrown.

Modern racing motorcycles often feature traction control systems specifically designed to prevent highside crashes. In MotoGP and other motorcycle racing series, highsides remain one of the most feared and spectacular crash types.