Arlen Ness AN-81-204 65 Degree Velocity Air Cleaner Kit Black for Big Twin 93-17 w/CV Carb or Cable Operated Delphi EFIDescription for Arlen Ness Black Velocity 65 Degree Air Cleaner Kit 81 204 Features patented Big Sucker "hidden breather" technology and a forward facing 65 intake design that produces the highest air flow performance numbers (CFM) we have tested Ness hidden breathers are o ringed at the heads and exist out the mouth of the injector carb to provide efficient engine breathing, eliminating the need for any external hoses or hardware Integrated radius