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K&N RK-3941 Intake System-Harley Davidson

Custom Assemblies > Intake System-Harley Davidson
  • Designed for Harley-Davidson motorcycles
  • Increase horsepower and torque
  • Easy to install
  • Made in USA
  • Backed by K&N warranty
The K&N RK-3941 Intake System-Harley Davidson fits some Harley Davidson FLHR Road King, Harley Davidson FLHTCU Electra Glide Ultra Classic, Harley Davidson FLHTCUL Electra Glide Ultra Classic Low, Harley Davidson FLHTCUTG Tri Glide Ultra, Harley Davidson FLHTK Electra Glide Ultra Limited, Harley Davidson FLHTK Ultra Limited, Harley Davidson FLHTKL Ultra Limited Low, Harley Davidson FLHX Electra Glide Special, Harley Davidson FLHX Street Glide, Harley Davidson FLHXS Street Glide Special, Harley Davidson FLRT Freewheeler, Harley Davidson FLS Softail Slim, Harley Davidson FLSS Softail Slim S, Harley Davidson FLSTC Heritage Softail Classic, Harley Davidson FLSTF Fat Boy, Harley Davidson FLSTFB Softail Fat Boy Lo, Harley Davidson FLSTFBS Fat Boy S, Harley Davidson FLSTN Softail Deluxe, Harley Davidson FLTRU Road Glide Ultra, Harley Davidson FLTRX Road Glide, Harley Davidson FLTRXS Road Glide Special, and Harley Davidson FXSB Breakout models. See vehicle applications link for details.
The K&N RK-3941 High-Flow Air Intake System increases engine intake airflow and delivering more horsepower & torque to your Harley-Davidson® motorcycle. The intake system increases power by eliminating the stock OE air cleaner and replacing it with a complete High-Flow Air Intake System. 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 High-Flow Air Filter is washable, reusable, pre-oiled and ready for installation.

[More Info on RK Series High-Flow Air Intakes For Harley-Davidson® Motorcycles]

Product Specifications

Estimated Horsepower Gain8.33 HP @ 4670 RPM
Air Filter ColorRed
Air Filter Height2.25 in (57 mm)
Air Filter MaterialCotton Gauze
CARB EO NumberD-269-55
Mounting Hardware IncludedYes
Overall Height4.969 in (126 mm)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
Product StyleMotorcycle Intake System
Replacement FilterE-3983
Street Legal In All US StatesSee Application Link Above
Top Material/FinishBlack Powder Coated
TUV Approved (Europe)No
Weight2.8 lb (1.3 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

K&N RK-3941 Intake System-Harley Davidson Product Reviews