Review on Enhance Indoor Air Quality with uni UP-4112ST Air Filters by Christian Young

is my old one. Exactly the same as the last one. It also won't fit the XR/CRF-70 pit bike carburetor, no way. I have always trusted UNI foam air filters on all my off-road machines and they are the only ones. I use and I prefer. If you see dust or drive in dust, you are definitely better off using a UNI air filter than a crappy K&N style air filter designed to destroy the engine. I absolutely recommend this product to everyone.