Anyone have any experience with UNI air filters?

[zlatan]

I am talking about filters such as this http://www.ebay.com/itm/NEW-UNI-Repl...8a7f40&vxp=mtr

[ZukiFred]

I use to run one in my Kat, be sure to use the rubber ring with the smaller hole and keep it clean and oiled. It never gave me any problems.

[92xjunker]

I have an issue with those reducer rings choking off my engine, therefore I won't touch it. They work great on my flat slides minus the reducer.