With 100 percent polyurethane top and bottom construction, these oiled, high-flow aFe Pro 5R air filter elements outperform stock paper filters—while improving horsepower and torque. The five layers of progressively finer mesh cotton gauze give a whole new meaning to incredible airflow. These filter elements are washable and reusable and are available in a variety of sizes and styles, providing incredible dust-holding capacity. Order the aFe Pro 5R air filter element model that is best suited for your application needs.