Feuling BA Air Cleaner Kit For Harley Feuling introduces the BA Air Cleaner, a result of extensive experience in developing high-performance cylinder heads, combustion chambers, and intake manifolds. This air cleaner enhances engine performance by elongating intake runners and optimizing air velocity, resulting in a more dynamic and balanced airflow. It includes a high-flow billet aluminum velocity stack, a durable reusable air filter, and a sleek one-piece billet cage. This design not only improves looks but also facilitates an easier installation process. Features: Lengthens intake runners for increased velocity High performance billet aluminum velocity stack High flow reusable air filter Convertible backing plate works with optional Fueling External Breather Kit, sold separately Made in the USA