first step

[250r48]

i want to make my ex faster in acceleration and top speed wat do u think i should get. i already have an exhaust and its getting bored and all that in the spring. so wat would be a good mod for speed and acceleration that isnt goin to blow my budget

[RiderTRX400ex]

what are you boring it to, what compression? a stage 2 hotcam with the bore job and a high comp piston will do u some good for sure.

open your airbox lid, or mod it.. make sure u jet it RIGHT.

there are many things