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Arlen Ness Big Sucker Stage I Air Filter Kit For Harley Davidson XL 1200 C 1996-2020 - Black Wrinkle Helmets CRF450R 2002-16 is part ofThe Arlen Ness Big Sucker Stage I Air Filter Kit For Harley Davidson XL 1200 C 1996 2020 Black Wrinkle is part of the latest collection from Arlen Ness. Features: Each hidden breather is O ringed at the heads and exits at the mouth of the injector carb to provide efficient engine breathing, eliminating the need for any external hoses or hardware Radius air inlet provides maximum performance by providing unobstructed airflow One piece aluminum backing