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look up the parts diagram and get the p/n..then reference the p/n against the specs of replacement ones. It is either that or find someone that has a digital scale and weigh each one, typical stock are 6-7 grams..if you run too light you lose top speed..
I prefer top speed..takeoff is nice initially for awhile but the end is always who goes faster and further..traffic behind you does not care about take off speed as an example, why get stuck at 35 when 45-50 is preferred..
Better take off is typically achieved by increasing the hp and air flow..free flowing intake/filter and a larger jet begins the process..then cdi and a better hotter coil plug to burn the mix, etc..
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