I recently purchased a couple of Twin Air filters for my KX. I have used Twin Air for years, I like the fact that they are slightly smaller than the stock filter. It makes them easier to get into the cramped air box. So I oiled one up and went to put it on the filter cage before I realized that it didn't have any "tabs" to put the pins of the filter cage into. I grabbed the package it came in thinking I had gotten the wrong filter, but no, it says for 06 to 13 KX 450s. So needless to say I am a little disgusted. The filters look the right size and shape and I think they would probably work, but no way am I taking a chance of my bike sucking dirt. So what is the story? Did Twin Air cheap out on their filters? Both filters are like this and both packages say they are for my bike. Has anyone else run into this? I have bought Twin Air for years and they have always seemed to be of high quality but I will definitely be switching brands! Any suggestions for filters? I am not a big fan of the uni filters, the two separate filters are kind of a pain. For now I am running the stock filter.