The top speed of a 650cc motorcycle can vary depending on various factors such as the motorcycle's design, weight, engine performance, aerodynamics, and other factors. Additionally, different models and manufacturers may have different top speed specifications for their 650cc motorcycles.
Generally speaking, most 650cc motorcycles have a top speed ranging from around 110 mph (177 km/h) to 130 mph (209 km/h) in stock form. However, some sport-oriented or high-performance 650cc motorcycles may have higher top speeds, potentially reaching speeds of over 140 mph (225 km/h).
It's important to note that riding at high speeds can be dangerous and is subject to legal restrictions and limitations on public roads. Speed limits and safety regulations should always be followed, and it's crucial to ride responsibly and within the limits of your abilities and the road conditions.