I had the power tip exhaust tip on my 05 Foreman 500, it is kind of like that one but it came with a spark arrester screen and 3 new bolts. It did make it a little bit louder and deeper but it backfires quit a bit and does it alot when mudding in first gear when getting into and letting off the gas. Also I noticed the plug was a little whiter then I liked it to be. I have been riding with it on for 5 months with no problems but the plug was the perfect color with the stock tip before I put the power tip on. I am going to ride it with the stock tip again and check the plug, if it goes back to the right color I will not put the tip back on.