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RK-3949B
$388.36 USD
MSRP $456.89 15.0% Off
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K&N RK-3949B Intake System-Harley Davidson

Custom Assemblies > Intake System-Harley Davidson
  • Designed for Harley-Davidson motorcycles
  • Black cover plate
  • Increase horsepower and torque
  • Easy to install
  • Made in USA
  • Backed by K&N warranty
  • Washable and reusable
The K&N RK-3949B Intake System-Harley Davidson fits some Harley Davidson FLHR Road King, Harley Davidson FLHRXS Road King Special, Harley Davidson FLHTCUTG Tri Glide Ultra, Harley Davidson FLHTK Ultra Limited, Harley Davidson FLHTKL Ultra Limited Low, Harley Davidson FLHX Street Glide, Harley Davidson FLHXS Street Glide Special, Harley Davidson FLRT Freewheeler, Harley Davidson FLTRU Road Glide Ultra, Harley Davidson FLTRX Road Glide, and Harley Davidson FLTRXS Road Glide Special models. See vehicle applications link for details.
K&N’s Street Metal Series High-Flow Air Intake Systems provide attractive styling, offer increased airflow and deliver more horsepower & torque to your Harley-Davidson motorcycle. These intake systems eliminate the stock OE air cleaner and replace it with a complete high-flow air intake system to increase power. The sturdy, custom aluminum backing plate mounts directly to the throttle body via an aluminum integrated, internal-run breather system. The intake system comes with a K&N Air Filter for high air flow and long service intervals. The K&N air filter is washable, reusable, pre-oiled and ready for installation. A flare-shaped black aluminum custom cover makes this air intake an excellent choice for increasing the performance and curb-appeal of your bike.

[RK Series Street Metal High Flow Air Intakes for Harley-Davidson Motorcycles]

Product Specifications

Estimated Horsepower Gain7.42 HP @ 4812 RPM
Replacement FilterE-3989
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height2 in (51 mm)
CARB EO NumberD-269-60
Street Legal In All US StatesYes
TUV Approved (Europe)No
Overall Height4.5 in (114 mm)
Top MaterialAluminum
Weight5.2 lb (2.4 kg)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
Mounting Hardware IncludedYes
Horsepower gains based on similar vehicle dynamometer test. Results will vary.
WARNING: Cancer and reproductive harm--www.P65warnings.ca.gov

K&N RK-3949B Intake System-Harley Davidson Product Reviews