Vance And Hines Vo2 Naked Vance and Hines Naked VO2 Air Intake For those wanting to keep the stock look, but not necessarily the stock performance Vance and Hines now offers its VO2 Air Intake as a highflow replacement kit for use with Vance and Hines Air Cleaner Cover, which is not included. Includes a highflow washable filter element, larger inlet backing plate and billet venturi to get more air in rider's motor for more power Designed entirely inhouse Made in the U.S.A.