best thing to get

[cbr5000]

i am 60 bucks to spend on my 400ex right now....wats tghe best performance thing i can get for my 400ex..already hagve a pipe:D

[nosliw]

jets (local bike shop)

airfilter (unifilter.com , knfilters.com)

shock covers (dirtskins.com)

oil temp gauge (warpdriveperformance.com)

new bumper

grabbar (prm-atv.com)

[prepracing]

RACE FUEL :macho

[EvilJester400EX]

Race fuel won't help a stock 400ex.

[DH400EX]

if you already have a pipe, go with a air filter and rejet it.

[QuadRacer18]

I'd grab some handlebars, speeds nothing without feeling comfortable.