Arlen Ness Billet Sucker Stage II Air Filter Kit for Harley Davidson 2000-13 Bi - Stainless Steel Filter Material Gain up to 12 percent more Horsepower by simply installing a Big Sucker on your bike! Stage II kit features a 20 percent larger Team Ness high-flow filter that requires an 8 round custom or O.E.M. outer cover Available with a standard red filter or Arlen Ness&rsquo;s new SS Stainless Steel air filter with a billet outer cover for clean styling and superior performance No oil hoses, no oil fittings, no leaking All mounting hardware included