Arlen Ness Black Monster Air Cleaner Intake Breather Stage 1 Harley 99-17 Harley

Designer: Arlen Ness

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Unit Price
SKU 81-000
Free delivery to the Lower 48 States
30 Day Returns and Exchanges
Fitmet Questions? Call us at 610-754-8500



Part # 81-000

Fits:1999-2017 Twin-Cam Delphi Fuel Injected Models, 99-06 CV Carb Models.  

Will NOT fit: 16-17 Softail, 16-17 FXDLS, 08-17 Touring/Trike

Does not include optional cover.  Covers sold separately.


Our 90 intake kit features our patented Big Sucker™ ″hidden breather″ technology and more filter surface area than any other kit we know of on the market for maximum performance.

Ness hidden breathers are o-ringed at the heads and exist out the mouth of the injector/carb to provide efficient engine breathing, eliminating the need for any external hoses or hardware.

The inverted 90 degree style filter features a built-in inverted top to pull in air not only from all sides of the filter but also the front, which results in a higher performance gaining airflow.

Each filter is constructed from synthetic material that is water resistant, which in most cases eliminates the need for a rain sock. Filters are re-usable and do not require oil, just rinse and re-use.

Kits are available with or without Arlen Ness forged billet covers, covers styles available in: Deep Cut, 10-Gauge or Beveled styles.

Forged billet covers can be added at any time to any Ness standard 90 degree kits that were originally purchased without covers.