My mod TB 250 can't beat a 500 h.o. !!!
 

Me and a friend were up at some big gravel piles and i have a TB 250 below, and he has a 2004 sportsman 500, and we dragged and he beat me. He got a head start off the line and i caught him right away and passed him but then he came right back and passed me and just pulled away. I dont know what more i can do to my TB to make it beat a SP 500 at least to my top end. I dont expect to beat it top end wise but i would like to beat throughout my band. Is boring my cylinder out, .020, and adding a wiseco piston my last option and will it make that kind of a difference. I have really good bottom and mid right now for a 250 but need more.

My mod TB 250 can't beat a 500 h.o. !!!
 

uhh bigger sprocket??

My mod TB 250 can't beat a 500 h.o. !!!
 

boring and adding a new piston will gain you nothing........it is a good mod, but you will notice very little until you go up in compression. Port and polish that sucker......

My mod TB 250 can't beat a 500 h.o. !!!
 

I've already had it ported and head milled .02. Your're saying more milling.

My mod TB 250 can't beat a 500 h.o. !!!
 

change your clutch to match your pipe...

My mod TB 250 can't beat a 500 h.o. !!!
 

What is your gear ratio? Like the others said you may need to gear it up.

My mod TB 250 can't beat a 500 h.o. !!!
 

I would say you could just add a reed cage but they are pricey and you already have alot
of money tied up into yours.

My mod TB 250 can't beat a 500 h.o. !!!
 

was there air in your tires? j/k

who did your portwork? and how severe was the portjob?
and u could always send your quad on a diet, i know them tb's are tanks.

My mod TB 250 can't beat a 500 h.o. !!!
 

shave the flywheel

My mod TB 250 can't beat a 500 h.o. !!!
 

Had the porting by a friend who is a performance specialest for arcticcats and it was ported the most without losing much bottom end.