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View Full Version : honda 300ex jetting



vaballa0037
02-17-2008, 05:17 PM
i have a honda 300ex with fmf megamax w/ k&n airfilter i was wondering about what the jetting should be and the mixture screw

bwamos
02-22-2008, 07:25 AM
Full pipe no-lid (or vented lid) w/ 8 disks on cannister.

130-132 main. Needle 1 position higher than stock (clip down 1). Screw 2-3/4 turns out.

Beleive that's what I ran on mine w/ a performax years ago. Should be a good starting point.