When you’re chasing every last bit of horsepower from a Harley-Davidson engine, airflow is everything. Feuling Parts has introduced a simple but effective upgrade for riders already running its popular BA Air Cleaner system: the new Top Filter for BA Air Cleaners.

Designed specifically for Feuling BA air cleaners equipped with 4-inch inside diameter see-through outer covers, the new filter insert helps increase available airflow in high-performance applications. While it may look like a small addition, improving the amount of clean air entering the engine can make a noticeable difference when paired with larger displacement engines, aggressive camshafts, cylinder head work, or other performance modifications.

The new Top Filter arrives pre-oiled and ready for installation right out of the package. It’s also fully washable and reusable, making it an economical upgrade that can be serviced instead of replaced. Feuling recommends maintaining the filter with its dedicated Filter Cleaner and Oil Kits, available in both red and black formulations, to keep airflow and filtration performing at their best.

Each kit includes everything needed for installation, including the filter element, lubricant, Loctite, and gasket. Riders with earlier BA Air Cleaners featuring the smaller 3.8-inch inside diameter see-through outer cover should contact Feuling directly for compatibility information.

Like the rest of Feuling’s performance components, the Top Filter is proudly manufactured in the USA and engineered to complement the company’s extensive lineup of Harley-Davidson engine performance products.

Available under part numbers 5416 and 5516, the Feuling Top Filter is a straightforward upgrade for riders looking to squeeze a little more performance from an already well-developed intake system. Whether you’re building a street-performance Milwaukee-Eight, a big-inch Twin Cam, or simply looking to maximize your BA Air Cleaner’s potential, this new filter offers an easy way to improve airflow without replacing the entire intake assembly.

For Harley enthusiasts who believe every horsepower counts, Feuling’s latest intake accessory is another smart addition to the performance toolbox.