Arlen Ness Big Sucker Stage I Air Filter Kit W/Cover SS Filter Black H-D XL These high performance air filter kits feature an exposed air filter with a outer cover for great style and performance Features a one-piece aluminum backing plate/carb support bracket Eliminates the need for banjo fittings, hoses, and clamps Breather passages exit at the mouth of the carburetor/throttle body, creating a virtually closed-loop system Pre-oiled filter element available in red or stainless jacketed styles