i have a 250ex. just got a pro circut t4 pipe...do i need to jet it even though its a slip on?

 

It would be better to. It'll run without a change, but Honda's are lean from the factory and a slip on will push it over the edge. Try one size up from stock and go from there.

 

u mean get like a bigger needle? becasue the kawi dealer said if i bring in my old one they can get me one about 2 sizes bigger??? is that all i will need?

 

i would re jet it....my 450 would get so hott it burnt my new alpinstars, gear and all...once i rejetted it it didnt get near as hott.


it may be difficult to find the right size jet but its worth it...and buy the single jets not the kit comes out cheaper that way also.

 

ok cool...well ill do that then. thank you

 

anytime man

 

You let more air in or out, and you need to rejet to keep the mixture at the proper air/fuel ratio. If you don't need a rejet, then all you have done is waste your money and make the noise louder.....