If you guys blasters cant walk all over 400exs youre doing something wrong. I have a full port job, big carb, reeds, pipe, etc. Stock bore and stroke and whipped a built 416ex in every way. I have maybe 1500 in my whole bike, he had 2500 in just the motor, full curtis sparks built. And yes he can ride it.
4 strokes suck for drag racing, but for overall riding having a good time theres no problem with them. There is absolutely no argument that a 4 stroke is better in any way in straight up power comparisons. I have a bunch of the little 4 stroke mini pit bikes and theyre awesome, but i will never own a 4 stroke quad.
Im going to race a guy with a built "440" ex sometime after i get the bike jetted and everything with the newer carb i put on. Ill get a vid and post it, should be a good race. I get tired of the loud mouth 4 stroke fegs talking sh*t for no reason all the time.