In general, it's difficult to make a direct comparison between two-stroke and four-stroke engines when it comes to speed, as there are various factors that can influence the performance of a motorcycle. However, let's consider some aspects that could affect the speed of both types of bikes.
Two-stroke engines typically have a higher power-to-weight ratio than four-stroke engines. This means that a two-stroke engine can deliver more power for a given weight, which can result in faster acceleration. However, this advantage may diminish at higher speeds due to factors such as aerodynamics and the engine's power curve.
On the other hand, four-stroke engines generally have a broader power band, meaning they can produce power more evenly across a wider range of engine speeds. This characteristic can be beneficial for maintaining high speeds over longer periods, as they often have a higher top speed compared to two-stroke engines.
It's also worth noting that advancements in technology have led to significant improvements in both two-stroke and four-stroke engines over the years. Modern four-stroke engines have become more powerful and efficient, narrowing the performance gap between the two types.
Ultimately, determining which type of bike would be faster would require considering multiple factors such as engine design, weight, aerodynamics, gearing, and other performance features specific to each motorcycle.