Arlen Ness Stage II Oval Performance Air Filter Kit

The Arlen Ness Stage II Oval Performance Air Filter Kit is a high-flow air cleaner upgrade for factory oval Harley-Davidson air cleaners. It improves airflow and adds a custom billet look to the engine. It is also known as a performance air filter, air cleaner kit or oval air intake upgrade.

Key Features:

• Pleated-top performance filter draws air in from the sides and top for maximum airflow
• High-flow black pre-oiled cotton filter media
• Filter cover, spacers and clamps are CNC machined from billet aluminum
• Increased filter height adds airflow without reducing rider leg room
• Has more filter surface area than the paper filters in factory oval air cleaners
• Dyno testing showed gains of up to 3 horsepower on factory displacement M8 engines, and up to 5 horsepower on 124 cubic inch big bore M8 engines

Kit Includes:

• Performance air filter
• Billet air cleaner cover
• Billet spacers, clamps and mounting hardware

Installation requires the OEM Harley-Davidson Ventilator oval backing plate, which is not part of the kit. Arlen Ness builds this kit for riders who want better engine breathing and a cleaner custom look.