CRF's Only Forums

On my 05' CRF450X, FMF Q4, air box mods, JD kit with 170 main and 2nd on needle...I have lost the bottom end power it had with stock settings. The mid/upper range hit is great but I really miss the bottom blast....what's up?

Try bumping the needle to the 3rd clip unless you live at 6000' +...