K & N RK-3950 Street Metal Intake System Black K&N Street Metal Air Intake Systems for Harley Davidson motorcycles increase power by replacing the restrictive stock O.E. air cleaner with an oversized K&N High-Flow Air Filter and a cast aluminum high-volume aluminum housing. This K&N high-flow air intake system gives your Harley an aggressive appearance while providing a significant increase in airflow, resulting in more power. Some K&N air intakes are not legal for sale or use in California and other states adopting California emission standards while others are 50 state legal. View the vehicle applications to determine the legal status for each vehicle.

• 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 O.E. breathers
• Easy to install, usually in 90 minutes or less

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