The K&N are good but like they said it lets in alot of dirt. It all just depends on what type of riding you do. I ride the sand and dusty conditions so I go with the UNI. I admit it does restrict some air flow but the UNI is the best foam filter you can buy.
__________________ For Sale: 86 LT frame set up for a CR500 Motor Currently without a quad.  E2S militia member-- commander |