The Big SuckerT Stage I performance intake for Milwaukee-Eightr (M8) engines adds horsepower torque and eliminates oil blow-by issues. The next generation patent-pending hidden breather system is o-ringed at the heads passes through the backing plate and exits inside the mouth of the throttle body through proprietary shooter tubes. - One-piece chrome backing plate - Can be used as an exposed filter design when using one of the Ness Stage1 billet covers - Increases horsepower torque and mileage - Eliminates oil blow-bye issues associated with performance intakes on M8 engines - With black pre-oiled air cleaner element - Aluminum filter top plate design eliminates internal mounting hardware 18-23 Softail 17-23 Touring (excl. 2023 FLHXSE FLTRXSE) 17-23 Trikes. Requires Ness custom cover