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250X Pro Circuit Jetting

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I have just insalled a Pro Circuit muffler and have been informed by my local Honda dealer that I dont need to adjust my jetting. Is this correct?

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If thats all you did was add a muffler, then you probably don't have to rejet. But what was the point of an aftermarket muffler? if not for additional performance!

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i would get a JD jet kit it worked amazing, all i added was a pipe and opened up the airbox and ended up going to a 160 from a 130 main jet

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