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Discussion Starter #1 (Edited)
hey all, i recently bought a YFZ468 thats running terrible, valves are in spec. Im at sea level and around 50°F.
just wondering what you guys are running for jetting.. no airbox lid, k&n filter, hmf slipon
 

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Start with getting a JD kit or equal. I'm currently running a 50 pilot, 190 main and the blue needle, clip in the 3rd
 
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