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npuzajr

BK Mod for 99 yz

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Has anyone tried to do the BK mod on a 99 yz? Im in the process of making a bracket to be able to adjust the squirt length and there is already a way to adjust the starting time, but Im not sure where to start with jetting. I had it running last night. I couldnt get rid of the bog on the bottom, but from 1/4 to the top it ran much cleaner. Im running a 52 pilot with a 165 main and stock needle in the stock position. Any ideas? Thanks

Nick

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