Arlen Ness Crossfire Monster Sucker Air Cleaner Kit For Harley Sportster Once again, the King of Choppers asserts its supremacy. Emerging from the moto-dynasty responsible for introducing the groundbreaking Big Sucker to the world, they have returned to their laboratory to engineer a true monstrosity. Behold the Monster Sucker kit, a testament to their innovation. This kit boasts the patented hidden breather technology of the Big Sucker, setting a new benchmark in performance. With a larger filter surface area than any competitor, it ensures optimal functionality. Ness hidden breathers, intelligently equipped with o-rings at the heads, channel air to exit through the injector/carb mouth, revolutionizing engine breathability. Notably, this design eliminates the need for cumbersome external hoses or hardware. The ingenious inverted Monster Sucker 90-degree filter comes complete with a built-in inverted top. This unique feature not only draws air from all sides but ingeniously harnesses frontal air intake for enhanced performance. Features: Hidden O-ringed breather technology exits out the mouth of the injector/carb to provide efficient engine breathing More filter surface area for maximum performance Each filter is constructed from synthetic material that is water resistant Filters are re-usable and do not require oil Deep Cut forged billet cover is included Separate forged billet covers can be swapped at any time to any Monster Sucker kits