Is 45mph fast for 150cc gokart?

Yes, 45 mph is considered fast for a 150cc go-kart. Most 150cc go-karts typically reach speeds between 30 to 40 mph, depending on their design and weight. Achieving 45 mph may indicate a well-tuned or modified kart, offering an exhilarating experience for drivers. However, safety precautions should always be taken at such speeds.