I want to get more power from my 400ex. Im looking at the 416, 426, and 440 kits. I dont mind spending money if i get more power. I want to go all out. I want to keep it as reliable as possible. I also want to be able to run on pumped gas. I dont want to keep going through the hassle of getting race gas every time i want to ride. what is the best set up to go with. who does good motor work. I want to know eveything im going to need to get with the extra cc. clutch ok? anything in motor needed to be beefed up? Also how many hp am i going to be looking at?

 

please help!

 

call powroll or sparks. powroll did mine very happy.