Rough Crafts Finned Air Cleaner For Harley Sportster The Rough Crafts performance intakes feature their CNC machine style and Arlen Ness patented air cleaner technology. The hidden breather system is o-ringed at the heads and passes through the backing plate and exits inside the mouth of the throttle body through proprietary shooter tubes. Beautifully made and built to not only make your bike look amazing but performance will increase with better airflow over stock. Features Finned teardrop shaped intake with a low profile for better leg clearance High performance black pre-oiled air filter Increases horsepower, torque & mileage CNC machined sculpted fins Machined from 6061-T6 forged billet aluminum Laser engraved Rough Crafts logo Includes necessary hardware