The top speed of a motorcycle depends on several factors, including the engine size, the motorcycle's weight, the aerodynamics of the bike, and the gearing.
A 300cc engine is a relatively small engine, but it can still produce a lot of power. The power output of a 300cc engine is typically between 25-35 horsepower. This is enough power to propel a motorcycle to speeds of up to 100-120 mph (160-190+ km/h).
However, the top speed of a 300cc motorcycle is not just limited by the engine power. The weight of the motorcycle also plays a role. A heavier motorcycle will have a lower top speed than a lighter motorcycle.
The aerodynamics of the motorcycle also affect its top speed. A motorcycle with a streamlined design will have a lower drag coefficient and will be able to reach higher speeds than a motorcycle with a less streamlined design.
Finally, the gearing of the motorcycle also affects its top speed. A motorcycle with a higher final drive ratio will have a lower top speed than a motorcycle with a lower final drive ratio.
In general, a 300cc engine is capable of reaching speeds of up to 100-120 mph (160-190 km/h). However, the actual top speed of a 300cc motorcycle will depend on the specific model of the motorcycle, its weight, its aerodynamics, and its gearing.
