aftermarket exhaust

[lippy]

Just wondering if anybody had a problem with aftermarket exhaust on fourstrokes in WI. I know they have a law about aftermarket pipes. how about the new four strokes? I see alot of exhaust out there just wondering if they are allowed

 

[RX1Jim]

I have heard the exhausts made by Bender and Whiteknuckle as well as the gutted stock exhaust. They all sound about the same and are not obnoxiously loud, they sound like a 4 cylinerd sport bike. They are not nearly as loud as a set of tuned pipes on a two-stroke. The Whiteknuckle GP-1 exhaust is extremely loud and in my opinion annoying.
Quebec has new noise laws and I wondered myself about putting on the Bender pipe I bought last year.