howdy all - i just got a 2004 kx250, am putting a fmf fatty pipe and turbinecore2 silencer on as the old was all smashed apart. question is jetting.... got this chart off the fmf site:

Main Jet - 165
Pilot Jet - 52
Needle - STOCK
Needle Position - 2ND
Power Jet - STOCK
Air Screw - 1.5

so i'm planning to use this as my base point, anybody have any experience on if i should use something else to start with? i'll be at about 3200 ft, and temps 50 to 85 here. so also wondering what effect my altitude and temp would have on those base settings? thanks and cheers to all

 

Welcome to KF

I do not have any experience with your combo. But, I would think that if FMF posted that info up as a baseline, that would get you started as you say.