jetting yfz450 - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 07-28-2004, 09:54 PM
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jetting yfz450

I just put a bill ballance hmf full system exhaust on my new yfz 450 I am looking for proper jets and if I need to put on new air box for best performance
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post #2 of (permalink) Old 08-10-2004, 12:33 AM
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Re: jetting yfz450

Yes you need to rejet, I would go to ALBA and get the K&N pro flow kit,(remove the airbox lid) then get the jet kit (it has smaller meatering rods) get the ZIPTY mixture screw and your set I like to jet alittle rich then go down from there
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