K&N Air Intakes for Harley-Davidson Add Power and Style for a Custom Ride

2015 Harley-Davidson Sportster 1200 with K&N air intake

K&N air intakes for Harley-Davidson motorcycles add horsepower, torque, and horsepower

The Street Hammer high flow air intakes nail home a guaranteed power increase on a wide range of Harley-Davidson® motorcycles. The exciting line of performance intakes is available in four unique versions so you can swing the Hammer that best fits your ride.

The Street Hammer is a full intake that replaces the restrictive stock unit. In addition to a serious boost in performance, the Street Hammer high flow air intake is designed to protect your V-twin from dust, dirt, and other ravages of the road.

The chrome Street Hammer intake for Harley-Davidson motorcycles

The chrome Street Hammer intake adds style and performance to your Harley

The heart of each Street Hammer intake is the custom aluminum backing plate that mounts directly to the throttle body via an aluminum integrated, internal-run breather system. A vibration absorbing mounting gasket helps tame the intake shake inherent in that legendary 45-degree engine layout.

The estimated performance increases when running the Street Hammer are impressive. As an example, K&N’s rigorous in-house testing showed an estimated increase of almost 4.5 horsepower in an otherwise stock 2016 883cc Sportster.

The black Street Hammer intake for Harley-Davidson motorcycles

Shown here in the black version, the Street Hammer intake is a ready-to-install kit

The estimated gain almost doubled in a 2015 1200cc Sportster with the dynamometer line showing an increase of about 8.75 horsepower. See all the details on the dyno test results for other models on the Street Hammer intake product pages.

Of course, the Street Hammer incorporates K&N’s legendary oil-impregnated, cotton gauze filter media in the round air cleaner element. Those multiple pleats keep the clean air flowing wash after wash with the fully reusable filter.

The X versions of the Street Hammer intake incorporate an extra-tall filter element

The X versions of the Street Hammer intake incorporate an extra-tall filter element

The K&N 10-Year/Million Mile Limited Warranty means that you will never need to buy another power-robbing paper filter element.

The Street Hammer is available for a range of Sportster®, Dyna®, Softail®, and touring models. The intake is offered in chrome with the RK-3933, RK-3944, RK-3945, RK-3946, and RK-3954. It is also available capped in a stealthy black with the RK-3933B, RK-3944B, RK-3945B, RK-3946B, and RK-3954B.

If your V-twin needs more air because of performance modifications or a larger build, you can opt for the chrome RK-3933X or RK-3946X or the black RK-3933XB or RK-3946XB. The X versions of the Street Hammer incorporate an extra-tall air filter for an increased volume of airflow.

Check K&N’s simple-to-navigate online application search tool to find the perfect Street Hammer intake for your Harley.

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