Harley-Davidson Low Rider S Air Cleaners & Kits

The Screamin’ Eagle Vortex Extreme combines an exposed air-cleaner design with space for your knee. Harley-Davidson describes freer, less obstructed airflow to the Milwaukee-Eight engine and increased power across the rev range; it gives no measured gain for your particular motorcycle. The shape was developed especially for bikes with fairing lowers, allowing knee movement when using the rear brake and footboard. It also leaves all four pushrods visible, so the intake changes the appearance as well as the space beside the engine.

The complete kit contains the backing plate, air-filter element, cover, rain sock and necessary mounting hardware. The supplied rain sock helps keep water, dust and debris away from the filter; it is an extra protective layer, not a waterproof enclosure. Choose chrome with 29400527 or black with 29400528. The product links below identify the finish as well as the part number.

The exact listings specify 2025-on Softail, 2023-on Touring and 2026-on Trike models with centre-cooled Milwaukee-Eight engines, excluding California models. Installation requires ECM calibration using the Screamin’ Eagle Pro Street Tuner. Check the exact motorcycle and installation requirements on the matching listing: an all-years category does not establish fitment for every year. The film’s 49-state US compliance statement does not establish UK or European road-use approval.

The Screamin' Eagle Extreme Air Cleaner – Circle, 29400488, keeps the familiar round, centre-bolt shape while exposing the filter face to incoming air. Its K&N oiled-cotton element is washable and reusable. Harley-Davidson describes the cleaner as capable of supplying enough clean air for a suitably configured large-displacement engine producing more than 150 hp. That is an airflow-support claim, not a promise that fitting this cleaner alone produces that power.

The manufacturer specifies 20% more airflow than the Original Equipment cleaner and says the design does not need a separate outer cover. It was engineered for the Screamin' Eagle 68 mm throttle body used with Stage IV products and also works with the factory 58 mm throttle body in the specified applications. Washing and re-oiling the element allows it to be reused instead of routinely replacing it. A supplied rain sock helps keep water, dust and debris off the exposed filter; it is additional protection, not a claim that the intake is waterproof.

The film lays out the kit's gloss-black die-cast backplate, open-face filter element and required installation gaskets and hardware. It then shows two optional Extreme Center-Bolt Intake Covers: gloss black 61301362 and chrome 61301363. Their five-spoke die-cast aluminium design has stepped machining inside the spokes. These covers dress the exposed filter while retaining its visible outline. Each cover is sold separately and is a cover only; neither finish includes the air-cleaner kit.

For 29400488, Harley-Davidson requires ECM calibration with the separately sold Screamin' Eagle Pro Street Tuner for proper installation. Match the exact kit to the motorcycle, throttle-body setup and market before ordering. The film explicitly excludes California models, and the manufacturer's current listing identifies this as a 49-state U.S. EPA-compliant product, not approval for every country. Screamin' Eagle sale and road-use restrictions vary by market; confirm the applicable configuration with a Harley-Davidson dealer.