K & N RK-3953 RK-Series Street Metal Sidedraft Air Intake Systems Matte Black K&N Street Metal Air Intake Systems for Harley Davidson motorcycles replace the restrictive stock OE air cleaner with an oversized K&N High-Flow Air Filter and a high-volume cast aluminum housing. If you are looking for an aggressive appearance but want a significant increase in airflow, resulting in more power, this high-flow air intake system is exactly what your Harley needs. Installation is so simple, it can usually be done in 90 minutes or less. The K&N air filter is washable, reusable, pre-oiled and ready for installation. This intake system features an updated modern look. Internal breathers provide a sleek, clean appearance. This air intake has a classic styling with a savage appeal. These K&N air intakes are street legal in most states. They are not legal for use in California and other states adopting California emission standards.
Guaranteed to increase horsepower
Designed to improve throttle response and engine sound
Cast aluminum high-volume, performance air intake housing
Washable and reusable K&N High-Flow cotton air filter that provides outstanding performance and protection
Integrated internal velocity stack
Built-in breathers replace external OE breathers
Easy to install, usually in 90 minutes or less