The maximum speed a motorcycle can achieve without losing control depends on various factors, including the bike's design, rider's skill level, road conditions, and other external factors. While it is challenging to provide an exact speed, modern high-performance motorcycles can reach speeds well over 200 mph (320 km/h) on suitable racetracks or straight stretches of road.
Even professional riders and racers train extensively to handle these speeds safely. The stability and control of a motorcycle are influenced by factors like aerodynamics, tire grip, suspension, and rider inputs, which become more critical as the speed increases.
In real-world scenarios, the speed at which a motorcycle can maintain control will vary depending on several factors, including the bike's handling characteristics, road conditions, and the rider's experience and skill level. Riding within legal speed limits and adhering to road and traffic conditions is always recommended for safety.