I have an 06 Foreman 500, just bought in November, i didnt pay for the additional warranty because i thought its a Honda it wont break, well i was wrong. In all actuallity i havent really rode it that hard. Well its down now, but hopefully not for good. It happened in a mudhole i wasnt exactly stuck yet i was working it out then all at once it sounded like i blew the clamp off the muffler or something and it sounded like air was leaking. I lost just about all power and the exhaust got really quiet like their was barely any compression. I managed to get it out of the hole and to the house where i took the pipe off and tried different clamps, but it changed nothing, the more i listened the more i thought it was something serious, so icalled the dealer i bought it from that is almost 90 miles away from my house,i bought it so for away because they had a killer price and again i thought....its a Honda it wont break, looks like i had a little too much confidence in Honda. Well the dealer said it sounds like a bent Valve and i tiold him i was 3 WEEKS out of warrany, he said he will call around and see if he can help me there but i seriously doubt that.