I just got a 38mm pwk keihin carb from ebay, got a good deal since the guy only listed that it was a carb from a ktm 300 exc and nobody bothered to bid on it[img]i/expressions/face-icon-small-smile.gif[/img]. any way i'm running a 290 main jet in my mikuni tmx 36mm, i was wondering what size main and pilot i should run in the keihin, thanks

 

Probably around a 165-180 keihin main jet. Dont know anything about your quad so it is a guess. The only way to find out is to try different jets and figure out what works best.