Welcome Kymco Owners!
I don't think they are compatible. I have been using Hiflo air filter in my Agility City 125 for a few years, the model number is HFA5001. The model number for Agility 125 is HFA5007.
http://www.ebay.co.uk/itm/271731386302?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIThttp://www.ebay.co.uk/itm/400910272402?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AITThe r16 version is cheaper which is why im asking. They look identical but i dont want to find out its slightly different once iv bought it just to save a few pounds.