mailman Posted May 31, 2012 Share Posted May 31, 2012 (edited) I have a Big Gun Rev box for a 2004 or 2005 TRX450R for $50 shipped. I have a K+N filter for the same bike for $35 shipped. K+N is a HA4504 which is a bolt on filter to replace your stock one with. . . Edited January 16, 2014 by TimesTen Quote Just a little more HP and I should be set. Link to comment Share on other sites More sharing options...
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