well i have a white bros pipe on mine and love it..i heard hmf is good so is yoshi and i forgot theirs another, they have axles and they just came out with +2 and +1 aarms for the lil 250ex..i also got a jet kit with filter and no aibox lid you can tell its a bit more peppy but not much..
08 ltr450 le cherry bomb, uni,Full Duncan exhaust,pro tapper,rock nerfs,motorsport bumper
01 440ex Girlfriends bike , +2+1 a-arms, uni filter, chm slip on,white bros header ac bumper, 440 kit 12:1, hd head studs, nerfs,rad lock nut,westcost carrier,450r carb,stage 2 hot cam, eca break block off, 450r swing arm,450r rear brake set up,tcs revalved rear shock