Arlen Ness AN-81-039 90 Degree Monster Sucker Air Cleaner Kit Black for Harley-Davidson Touring 17-24/Softail 18-24Description for Arlen Ness 90 Monster Sucker Air Cleaner No Cover Black Filter more surface area than any other kit on the market with the Arlen Ness 90 degree 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