2017-later Harley-Davidson® Touring models with Milwaukee-Eight® engine is the S&S Stealth Air Cleaner. Designed with the M8 engine in mind as well as the ability to install the stock Milwaukee-Eight® engine air cleaner cover. Increased air filter area along with the air horn like radiused inlet and unique S&S stinger cone result in a more smooth air flow for more power. Includes adapter for stock air cleaner cover (not incl. CVO models)