What jet sizes should I use? by DocCRF-X250 » Fri Mar 13, 2009 4:06 pm
I recently did a few mods to my sons crf 70. I opened the air box and removed the screen from the exhaust. I know after taking it for a ride that the jets should be changed. My question is what are the stock jet sizes in the 70, and what should I go to? Thanks in advance
'04 250 X-- Air box open, JD Jet Kit, FMF Ti Powercore exhaust, Twin-Air Power Flo Air filter, AP Mod
'07 CRF 70 (sons)--Pod air filter, opened exhaust and re-jetted