Over the last few years, there’s been a resurgence in the popularity of two-stroke engines, even though competitive riders continue to rely on four-stroke power. So which is preferable?

4stroke is used in gixxer.2 stroke engines are no longer used in any bike as it causes more pollution and are not efficient as 4 stroke engines.

Although they still exist, 2-stroke diesel engines aren't all that common, and 4-stroke engines are what you'll commonly see ...