i need some advice my friend has a stock 400ex and i have a rappy350 with a fmf exhaust, k&n airfilter, and stage 1 dynojet kit who would win a drag

 

Whoever the better rider is.

 

ive been riding longer then he has and my rappy is a 05 and his 400 is a 01

 

True enough, but your engine is still a 1988/89, forget the last year they made some changes. Supposedly a more aggressive cam, and a different carb. It'll be close if your skill level is anywhere near the same.

 

if he is a decent rider he will beat u no matter what

 

werd

 

This is what i had in my warrior before i put a stock motor back in for my boys..It would run right with a 400ex if not a little better..And this just has to do with the motor set up not the frame set up..

JE 366 big bore Kit..With 12.1 pistion
Port job
Black dimond valves
Black dimond valve springs
Stage one hot cam
Dirtdigger clutch system------Sold
Computer Programable Dyna CDI-------Sold
Rappy 660 cooling fan

BTW im parting it out PM me..

 

Who's heavier? My buddy has a piped 400ex and when we put his little brother on it (who weighs 115lbs) he can keep up. He doesn't beat me but, it is a lot closer than when his older brother is on it, who weighs almost as much as me.

Or...you could just race and find out. There is no shame in losing.