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Rebuilding a 07 400ex.. Getting a wiseco 87mm 10:1 piston, cometic 89mm gasket set. Hot cams stage 1(would go 2 but dont want to lose lowend) Big gun slip on, better air filter and lid is gone. Im at sea level. Any recommendations for jetting? Is the oem needle good cause i really didnt want to get a kit. Was going to buy a few different size jets after motor was together and broke in and do the plug check till results were fine
 

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Look carefully on ebae. You can shop jet kits by brand compatibility. Example: mikuni jet. Most listings are under $20 for 10 secondary and 10 mains. I lucked up and found a set that included 3 brands, covered 2 bikes for cheap. Just a suggestion.
 
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