Made my own after dorking around with the DNR guys in Greece. My motivation was not liking the oil filters being 20 bucks! All that money for some dinky, but well-made cartidge. HiFloFiltro as good or better than OEM solved that problem at 3 to 6 bucks a pop. The OEM air filters are also a poor value at over 20 bucks. Since most Kymco dealers are mail-order parts sources they usually want about 15 dollars shipping. Hey, I'm cheep! What I did was use some of that green filter foam in sheets about 3/4 inch thick. Enough material for at least 4 filters. That is 80000 miles! A package of that stuff is about 15 USD at your local ATV dealer. Pictures if I can ever figure out that reducer app......
Karl