Arlen NESS Big Sucker™ Stage 1 Air Cleaner Kit Without Cover524162197 Product Description All New next generation backing plate design Increases horsepower and torque High performance filters are made from black pre oiled cotton for the best in airflow and filtration Aluminum backing plate that features zero flat surfaces, every angle of the intake is designed to promote airflow One piece aluminum top filter place with integrated air venturi to direct airflow into the throttle body Filters are washable and re