10-gauge inverted air filter assemblies boost performance and style. The air filters pull air in through the sides and front to provide better airflow and to allow your engine to breathe more efficiently. Arlen Ness forges their 10-gauge inverted assemblies from billet aluminum with a unique beveled design that is black anodized or finished in chrome to enhance your motorcycle's appeal. They feature built-in velocity stacks and handmade synthetic filter elements that can be washed and reused.