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 Tri-Spoke 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.