New for the 2017 Harley-Davidson® models with Milwaukee-Eight® engine is the S&S Stealth Air Cleaner. Designed with the M8 engine in mind and included is the Black Airstream 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. This kit does not include an adapter for use with the stock air cleaner cover.