When it comes to performance V-twin upgrades, Feuling Parts doesn’t play small—unless small means slimmer, sleeker, and more comfortable for the rider. Introducing the new Feuling BA Slim Air Cleaner, a compact evolution of Feuling’s proven high-flow BA Air Cleaner system, engineered specifically to create more legroom, better ergonomics, and the same big-air performance that Feuling’s hardware is known for across the performance bagger and Milwaukee-Eight world.

For riders who spend real time in the saddle—especially long-haul touring riders or aggressive canyon-carving performance bagger enthusiasts—every inch counts. Feuling listened, refined, and delivered.

The Slim is just 2.375 inches deep and sits tighter to the bike with an offset toward the front of the motorcycle, giving the rider noticeably more knee and leg clearance.

Translation:

• No more banging your knee into the air cleaner in tight tank squeezes

• No more awkward leg position on long stretches of highway

• More freedom to move when riding aggressively

Whether you’re lane-splitting, carving canyons, or clocking 500-mile days on the Motul Hot Bike Tour, this design change is immediately noticeable.

While the outer profile slimmed down, the performance did not. Feuling redesigned the internal velocity stack, maintaining the same high-volume airflow riders expect from the original Feuling BA Air Cleaner. Increased airflow means faster throttle response, better breathing, and the potential for more horsepower—especially when paired with a performance exhaust and EFI tune.

Feuling delivers plenty of customization choices to fit your style and build: choose black or chrome finish with red or black filter and clear window or solid faced cover. Want to see that velocity stack doing work? Go with the clear cover. Want a more stealth, blackout look? Go solid black on black.

The Feuling BA Slim Air Cleaner is already shipping and fits most popular Harley-Davidson models running Milwaukee-Eight engines.