K&N, Twin Cam RK Street Metal O.S. series air filter kit

High-flow intake system. Reuses the original air filter cover for a factory look. Includes a special back plate, internal velocity stack, integrated breathers, an oversized air filter element and hardware.
A K&N dyno test of this RK series air cleaner assembly on a 2008 Street Bob showed a gain of 6.54 HP@5100 RPM; on a 2014 Ultra 103" an additional gain of 8.33 HP@4670 RPM was achieved.
The K&N RK series air filter assemblies are true discreet air filters as the original air filter cover is reused. The power increase is achieved by replacing the factory filter and backplate. A special K&N powder-coated aluminium backplate, with a dyno-tuned velocity stack, is required to house the oversized K&N air filter element. The integrated breathers replace the factory external breathers. Careful design allowed the original air filter cover to be refitted for an unmodified factory look.


Specifications


Brand
K&N


Application
13-15 Softail (NU)


Packaging weight
1.247 kg


HS Code
84213100


Motorcycle family
SOFTAIL


Original name
K&N, Twin Cam RK series Street Metal O.S. air cleaner assy