i am looking for a new exhaust system for my 500. i was looking at a full system but my dad said that just getting a slip on muffler gets about the same amount of performance. money is not a issuse.

 

If money is not an option just get a full kit. On my Scrambler I had an AAEN slip on and it made a little more power, and on my SP I have a HSP full system and it also makes a bit more power. Will it perform like an 800.... No, but it will outpull my buddy on his stock 07 500 with 26" tires.