Aftermarket Exhaust - Nytro

If my snowmobile can't exceed a certain decibel then why should all the the 2 cylinder John Deere motorcycles be able to run straight pipes? I mean Harleys, sorry sometimes I get those confused, but then I remember that John Deere has progressed with time and quit building two cylinders tractors.
 
Guys this has gone way off topic!!

Why does every ehaust thread turn into a closing trails thread??

BTW the trails here are not on PRIVATE PROPERTY so I don't care about loud pipes close trails comments.

Can anyone give an answer to the original question?
 


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