I was wondering which of the cobra exhausts is the loudest: the jet system, the black megaphone system or the regular aluminum 4 stroke system?
Sound isnt an issue for me because i ride mostly in pits where people wont be bothered.

 

I don't know about the jet or the aluminum ones, but I have a Cobra Megaphone on my 250 Big Red and its VERY LOUD. There are no atv's in my area that are as loud as mine.

 

if you want loud, why bother with an exhaust?