Filter more surface area than any other kit on the market with the Arlen Ness 90° Big Sucker Air Cleaner intake kit. Boost your motorcycle performance from with Arlen Ness's Hidden Breather technology. Ness Hidden Breathers feature O-ringed heads from the mouth of the injector to provide efficient engine breathing without any additional hoses or external hardware. With the inverted, 90° filter, you're pulling air from all sides of the filter, including the front, which results in performance-boosting airflow for your motorcycle. Each filter is constructed from water-resistant materials so you don't need a rain sock. They are also reusable with no oil required. Just rinse and re-use. Choose from Deep Cut, 10-gauge, Beveled style covers or Standard / no cover at all. Fits all Ness standard 90° kits. Boost motorcycle performance with Hidden Breather technology No hoses or hardware required 90° filter that pulls air from all sides Water-resistant Reusable No oil needed