i have a set of carbs that say keihin pwk on them they are 28 mm i think they maybe knockoffs they take a keihin round main jet
the lowest i can take is 100 shipped they come with the carbs slides caps also they have 150 mains and 50 pilots i literally got them in the mail today and never installed them
thay may work just like a keihin or an oko dont know never tried them i was told they only have 4 hours on them i was looking for real kehins that is why i didnt want them
everything is in great working order i will post pics soon