Hard coated polycarbonate window. Patented outer cover design (US Patent: D852,680). Patented backing plate technology (US Patent: US 10,851,741 B1). High performance black pre-oiled air filter. CNC machined from forged billet aluminum. Patented oil catch / reservoir. Increases horsepower, torque & mileage. Eliminates oil blow-bye on M8 engines. Black anodize finish. Fits 24 later Touring, 25 Softail models. Also available in different colors/models fitment.