I pulled the DNA filters out of my XTR as fine dust was
        
 getting passed them.... 
        
 now use oiled foam...
         
        
 Anything hi flow has to have big holes somewhere......
         
        
 DNA / K & N style filters are great for road going bikes
        
 but not on a bike that sees any dusty roads...
         
         
        
 This is worth a read.... take note where the K & N/DNA style filters
        
 came in all tests....
         
        
http://www.dieselbombers.com/chevrol...r-testing.html
         
         
         
         
         
         
         ..