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DoctorRzed

168 main jet or158?

3 posts in this topic

What preformance gains or losses do I get w/ a 168 main and how about a 158 main?

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Just changing a jet won't give you any performance gains. The size of the jet needs to fit the application it is placed in. If the application calls for a leaner jet, the bike will run better with a smaller sized jet. The opposite is true, if the bike needs more gas, than you need to put in a larger jet.

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ditto what vegas said. The more gas you put in the cumbustion chamber doesn't make your bike faster. The perfect air/fuel mixture will make your bike faster.

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