Are two strokes really twice the power of four strokes?

Two stroke and four stroke dirt bikes have been around for a long time. Each type has it’s advantages and disadvantages. Furthermore, over the years each has had its shining moments as the preferred type of dirt bike for certain applications. The reason for these shining moments is primarily because of engineering improvements. Of course, the bike of choice among the populace can be influenced by marketing, word of mouth and rider preference. Whatever the reasons, there are some general facts that make the two stroke and four stroke dirt bike engines very different, power being one of these.
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