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Arlen Ness Stage II Oval Upgrade Performance Air Filter Kit

(1 review)

Item: 417472

$296.95 – $305.95

Select Your Vehicle - Fitment Guaranteed

Arlen Ness Stage II Oval Upgrade Performance Air Filter Kit


  • Increase performance and add style to the engine
  • Features a performance filter with a pleated top to take in air from the sides and top of the filter for maximum airflow
  • Filter cover, spacers and clamps are all CNC machined from billet aluminum
  • Performance air filter is made from high-flow black pre-oiled cotton media
  • Increased filter height specially designed to increase airflow without reducing leg room
  • Over 50% more air filter surface area than paper filters found in factory oval air cleaners
  • Dyno testing has shown up to a 3 horsepower increase after installing the upgrade filter on factory displacement M8 engines; up to 5hp gain for 124" big bore M8 engines

Kit Includes:

  • One performance filter
  • One billet air cleaner cover
  • Billet spacers
  • Clamps

Product Note: Requires OEM ventilator oval backing plate to complete installation.

Specification Details
CARB Approved Yes
Color Varies (make selection above)
Engine Type Milwaukee Eight
Filter Media Cotton Gauze
Finish Varies (make selection above)
Material Varies (make selection above)

Vehicle Fitment


Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

Harley Davidson
  • FLFBS Softail Fat Boy 114 2018-2024
  • FLHCS Softail Heritage Classic 114 2018-2024
  • FLHRXS Road King Special 2021-2025
  • FLHXS Street Glide Special 2021-2023
  • FLTRXS Road Glide Special 2021-2023
  • FXBBS Softail Street Bob 114 2021-2024
  • FXFBS Softail Fat Bob 114 2018-2023

Customer Reviews


Upgrade Air Filter

By   on  Verified Purchaser

Arlen Ness air filter is equal to or better than Harley but $20 to $30 cheaper.


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Questions & Answers


This filter requires oil every time it's cleaned? or is there an oil less version?

Yes, filter oil is always recommended whenever you wash your air filters. You can certainly run this without oil, but your engine will be less protected from road debris since oil plays a large role in trapping uncharged particles as they pass through the cotton gauze filter element. There is no oil-less version of these filters.

By Tom

can i get in chrome?

Once you select your exact machine from our fit guide, you'll be presented with all of the color options for this air filter kit. We do indeed have them in chrome for most models.

By Tom

Have a question? Please ask our experts and customers who own this product.