wr450 jetting

hi everyone, just put a white bros exhaust , performance air filter, air box mod on my wr450{2005} and would like to know what size to increase the main jet to, it has a 165 in at the moment, thanks paul { from the uk and its bloody freezing }

thanx that was a great help, regards paul

Click on the gas can in my post please. Say something good.

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