ARLEN NESS Monster Sucker Air Cleaner — Black – 88-04, 06-22 Sportster

The Monster Sucker Air Cleaner uses hidden breather technology to deliver reliable, performance-enhancing intake airflow ⚙️.

Hidden breathers are O-ringed at the heads and exit out the mouth of the throttle body, providing efficient engine breathing without external hoses or hardware.

The water-resistant synthetic filter usually eliminates the need for a rain sock and can be rinsed and reused — no oil required 💦.

An inverted top pulls air from all sides for increased performance-gaining airflow. Fits '88–'90 models as well; the breather system is not applicable for those years.