Vance & Hines Naked VO2 Air Intake 71003 For those wanting to keep the stock look, but not necessarily the stock performance Vance & Hines now offers its VO2 Air Intake as a high-flow replacement kit for use with your stock air cleaner cover Designed and manufactured entirely in-house, the VO2 Naked includes a high-flow washable filter element, larger inlet backing plate and billet venturi to get more air in riders motor for more power Made in the U.S.A.