I've had gas go bad in 2 months. As stated above no need for race gas. Unless you have had work done that would require race gas it is not necessary. Buy a ratio rite cup and only mix a couple gallons at a time, they sell em at most bike shops. I would also check the jetting. There is a good guide at the top of the forum page.
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Kdx200-RBdesigns modified head and carb KX250 fork swap FMF torque pipe FMF turbine core2 VF3 reeds
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