I am looking at aftermarket air filters. I am considering the K&N but I thought I would ask you guys to see if you have had any experience with any after market air filters. So what one is the best for maximum air flow?

 

K&N is the best for flow. Will let in very fine dust particles though. If you dont ride in real dusty conditions, go with one. Be sure to use an outerwear to prolong the life of the filter. If you ride in dusty conditions, go with a foam/oil setup. Pro Design make the best system.

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Boomer '99 Wolverine

 

I use the K&N on my Grizzly with a K&N precharger, which prolongs the time between cleanings. I highly recommend the K&N filter and precharger. Using the K&N filter cleaner, and oil makes for a simple cleaning and reservicing procedure.