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what jet sizes do i need from stock pipe to pro curcuit pipes


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I would say the biggest jet you are going to want to run with a stock air box is going to be a 250 or 260. We run 280 to 290 at sea level with dual filters and pipes. 300 is going to be way to big.

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At 1100 ft with pc pipes and dual k@ns I had 300 mains for 10 yrs with no problem

 

 

You run into a bike from time to time that wants a bigger main likes your did but he is still running a air box so there is no way he will be up at a 300 that is just way to big.

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