Originally Posted by
Enthalpic
I thought pollution control regulations had essentially squashed them.
In California they are still legal for off-road use but the latest is they will be unable to sell them after 2021. Street use, yes,gone long ago, emissions too high. The fuel injected two strokes are a lot cleaner than the carburated ones.
In motocross racing, 4 strokes were allowed to compete against the two strokes by using an engine with double the displacement of the 2 stroke. This led to intense r&d of 4 stroke engines and the chassis for these bikes. When I stopped riding motorcycles the 4 stroke bikes were a lot heavier than available 2 strokes, like 30 or 40 pounds. Now the 4 strokes are lighter than those old 2 strokes.