i have a fmf fatty, and an fmf powercore 2 i am like for what jet kit i need to get everything els is stock
don't buy a jet kit. check and see what's in the carb currently and do a plug chop. then get you hand full of different sizes and then continue to plug chop until you get it on the money.
and i will assume that it's for the yz250 in your sig.
Anybody know what size jets come in the fmf power up kit? Just installed my fmf exhaust last week...going to get it rejetted this week sometime, just trying to get an idea of what I am working with here.