Good luck! I've tried extra packing, and then tried adding some supertraps to the end. All I did was waste a bunch of money. It choked the motor before it ever got quieter. Even when it did get somewhat quieter, despite running like crap, i could hear the throttle body sucking air under throttle making just as much noise as the muffler.

 

I just started researching this.
Here is a thread on mufflers for 800 RZR; http://www.rzrforums.net/projects-how/44527-triple-pass-universal-muffler-install.html

 

That is what I thought I would hear.
I guess I will have to buy better ear protection.
Thanks,

 

Has anyone tryed a car resantor the small like muffler at the end of the tail pipe

 

I have this muffler and its actually really quiet. Its not cheap but its so nice not hearing that loud ass stock muffler. I also have the twin header from a S 800
UTV - Exhaust - Super Silent? Muffler - Starting Line Products

 

Do a search on YouTube and ull see guys using flowmaster 40 series mufflers to walkers which are almost silent.Several automotive choices but require custom fab work on your current exhaust or something made from scratch.