Arlen Ness Monster Sucker Air Cleaner Kit For Harley 1991-UP Sportster - Black

• Monster Sucker kit features our patented Big Sucker hidden breather technology and more filter surface area for maximum performance
• Hidden breathers are O-ringed at the heads and exit out the mouth of the injector/carb to provide efficient engine breathing, eliminating the need for any external hoses or hardware
• Filter features a built-in inverted top to pull in air not only from all sides of the filter but also from the front, which results in more performance-gaining airflow
• Forged billet covers can be added at any time to any Monster Sucker kits that were originally purchased without covers (sold separately)
• Each filter is constructed from synthetic material that is water-resistant, which in most cases eliminates the need for a rain sock
• Kits do not include Arlen Ness forged billet covers; must be purchased separately
• Filters are re-usable and do not require oil; just rinse and re-use
• California Air Resource Board: Executive Order D-639-12_R-01