• Monster Sucker kit features the Ness 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
• 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
• Cover styles available in Deep Cut, 10-Gauge or Beveled - Sold Separately
• Kits do not include Arlen Ness forged billet covers; must be purchased separately
• Forged billet covers can be added at any time to any Monster Sucker kits that were originally purchased without covers (sold separately)

Fits: 1991-2017 Harley Sportster XL (excluding 88-90, breather system is not applicable for these models)

NOTE: Will not work w/ fairing lowers