ok guys here are the mods that I have done to my 250 ex. i have done the exhaust with a hmf full exhaust system and I have put a fmf jet kit in the carb and I also have a k&n air filter on it. are there any other mods that I can do to get more power? also does anybody know what the top speed of the 250 ex should be? I like the quad a lot don't get me wrong, I just wish it had more power and went a little bit faster say like 50mph. anyway any help would be great thanks.