Looking for a free flow air filter for "JayZee" (my Jiajue 150cc Zuma Clone) I decided to keep things "stealthy" by using the original airbox together with a free-flow fabric filter from either K&N or Simota. Turns out a Yamaha Zuma 125 sized filter would do the trick. So I ordered a Simota from Taiwan via eBay, removed the original paper filter and framework from my original using a Dremel Mototool, then cut the Zimota to fit and glued the two together using black silicon glue. Seems to have increased airflow and as such she is now running a bit lean. Time for some carburetor work.