What is the main benefit of this K&N intake system?

This K&N RK Series intake is designed to significantly increase airflow to your Twin Cam Harley-Davidson engine. This improved airflow typically results in more horsepower and torque, giving your bike a noticeable performance boost.

Does this intake system require any special tools for installation?

While specific tool requirements can vary by motorcycle model, most K&N RK Series intakes are designed for a direct bolt-on installation. It's always recommended to refer to the manufacturer's installation instructions for a complete list of tools and procedures.

How do I maintain the K&N High-Flow Air Filter?

The K&N High-Flow Air Filter included with this intake is washable and reusable. You can clean it using a K&N Recharger Kit, which includes a cleaner and oil to restore the filter's performance and filtration capabilities.

K&N RK-3909-1 Cold Air Intake System | Harley Davidson Twin

Name: K&N Red Intake System for Harley Davidson
Brand: K&N
Price: 314.99 USD
Availability: InStock

K&N Red Intake System for Harley Davidson

$314.99

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

K&N Red Intake System for Harley Davidson. Boosts horsepower and torque with improved airflow.

Key Features

Fits 1999-2012 Harley-Davidson Twin Cam models.
Powder coated billet aluminum back plate with integrated velocity stack.
Designed to increase horsepower and torque.
Utilizes K&N's High-Flow Air Filter for excellent filtration.
Washable and reusable air filter element.
Retains stock air cleaner cover for a factory appearance.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Product Details

The billet aluminum back plate on this K&N RK Series intake is powder coated and features a built-in, dyno-tuned velocity stack. This design helps eliminate external breathers and creates a smoother path for air entering your Twin Cam Harley-Davidson engine. It's a well-built piece that's designed to get more power out of your ride.

This intake system centers around K&N's well-known High-Flow Air Filter, which offers excellent air filtration without restricting airflow. The result is a notable increase in horsepower and torque. Plus, it's washable and reusable, so you can clean and service it for years of use. This RK-3909-1 assembly is designed to work with your stock air cleaner cover, helping it maintain a factory appearance.

This K&N intake fits a wide range of Harley-Davidson Twin Cam models from 1999 through 2012, including popular bikes like the Road King, Dyna Super Glide, and Heritage Softail. It's a solid option if you're looking to improve your engine's breathing and performance.