alright here's the deal, i used to own a 98 banshee and now i own a 99 polaris sport 400, from the fell of it my sport has just about as much power, if not more. my sport has a wiseco piston, bored over, hpd trailmod pipe and silencer, and an aggressive clutch kit.
My friend owns a 99 banshee(stock), he is coming to visit in a couple weeks and i have been bragging tht my quad will smoke his, what are your guy's opinions, thanks and i'm looking forward to your replies.

 

For your sake, try to find somewhere with limited traction, then I can guarantee you will win.

 

It wouldn't be the first time I've seen a Banshee lose to a Polaris. The thing is what does your Sport have done to it. You've got to have some kind of mods or the Banshee will catch you on top end.

 

Been there...done that....

Even on good traction for both of you, you're sport will take him off the line (considering his Banshee is stock), BUT he WILL catch up and pass you eventually (depending on his/your driving it could be anywhere from 75' to 300' down the road).

Port your Polaris and you should be able to take him the whole way.

-Josh