Okay i don't have an exhaust yet, but it will go on before i do one of the above mods. What is your opinion? Obviosly the 416 HC will out do the other two, but what will out do the other 416 reg or a stock 400 with a HC piston? I am also trying to consider overall price, reliability, and performance. Thanks for your help.


P.S keep in mind that i ride in the woods, and only occasionaly drag race, and close to never race in a mx race.