the fastest speed achieved by an electric bike without crashing or falling apart was 238.6 kilometers per hour (148.7 miles per hour). This record was set by the electric bike named "Ack Attack" piloted by rider Mike Akatiff on the Bonneville Salt Flats in Utah, USA, in September 2010. The Ack Attack electric bike is a specially designed vehicle for high-speed runs and holds multiple land speed records for motorcycles.
It's important to note that achieving such high speeds on an electric bike requires specialized engineering, aerodynamics, and safety measures. These record-breaking attempts are conducted in controlled environments under specific conditions and may not reflect the capabilities or recommended usage of commercially available electric bikes. Safety should always be a priority, and it is crucial to follow the speed limits and regulations applicable to electric bikes in your jurisdiction.