air filter

I was searching the forums and found someone talking about the Klinik Rc air filter and how they were supposed to be better than the others. I need a new air filter for an engine and figured I should ask around about before potentially purchasing one. Heres what they look like if anyone's...

Hello all, nice straight forward question today hopefully, is it worth installing a fuel filters and fuel cooler? I wanted the ally air filter cap and see that it all came as a pack for not too much more. Thanks

Hi, Do I need to oil the outer (orange) air filter sponge on my Hobao Hyper 7 TQ2?? My blue inner filter is certainly oiled.