Originally Posted by KCvale
In a word, no, it won't be OK.
The exhaust on a 2-stroke is actually part of the intake too.
This animation from SpookyTooth shows you better.
With no expansion chamber blowback of fuel it goes out the tailpipe polluting like crazy, and it cuts your power and mileage drastically.
I suggest you use a real pipe, then just add your mufflers after it.
Just go real wide right after the little expansion chamber exit hole so as not to restrict it too much.
i have had other 2 stroke bikes like this. i looked into the expansion chamber and im not going to spend 60 bucks on one. i want simple. about pollution. i could care less!