K&N Street Metal High Flow Air Cleaner For Harley Twin Cam K&N Street Metal Series High-Flow Air Intake Systems provide a good looking appearance, offer increased airflow and deliver more horsepower & torque to your Harley-Davidson motorcycle. Features: Increase power by eliminating the stock OE air cleaner and replacing it with a complete high-flow air intake system Sturdy, custom aluminum backing plate mounts directly to the throttle body via an aluminum integrated, internal-run breather system Comes with a K&N Air Filter for high air flow and long service intervals A durable mounting gasket is also included to help absorb vibration Air filter is washable, reusable, pre-oiled and ready for installation Simple designed custom covers give this air intake good looks while powering down the highway or at your local show Increase horsepower and torque Easy to install Backed by K&N warranty Made in the USA