So i just picked up a 2004 crf250R a week ago and trying to get it set up. Here is the info: Sea Level (Bay Area Cali) Stock Carb FMF 4.1 Slip on (Stock headers) Just ordered a moose racing jet kit since thats all my guy had in stock atm Let me know any other info is needed. Appreciate the help! I couldn't find much except on the fmf website which said it needed a 400 something main jet? that didnt seem right.