These complete air cleaner assemblies not only provide a distinctive look but also provide outstanding performance features. Its uniquely designed back plate with air horn style radiused entryway and the dimpled cover with air directional cone on the inside, increases the airflow to a maximum. This air cleaner assembly comes complete with all necessary mounting hardware and Chrome plated aluminum cover. Fits CV carburetor or Delphi Fuel Injection equipped 1991 to present Evolution Sportster.