K&N RK-3930X Intake System-Harley Davidson

Custom Assemblies / Intake System-Harley Davidson
$191.99 USD
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Product Overview

  • Increases horsepower
  • Washable and reusable
  • Fits inside stock cover
  • Provides increased air flow
The K&N RK-3930X Air Intake System was designed to get more horsepower from your Twin Cam Harley-Davidson engine. By utilizing the stock air cleaner cover, the factory look is retained. Built around the legendary K&N High-Flow Air Filter, this RK Series assembly includes an innovative powder coated billet aluminum back plate that eliminates external breathers and features a built-in, dyno-tuned velocity stack. The result is a significant airflow increase to the engine without sacrificing filtration. The RK-39130X comes with a larger air filter and longer spacers than the RK-3930.

[More Information on High-Flow Air Intake Systems for Harley-Davidson Motorcycles]
Estimated Horsepower Gain5.91 HP @ 4399 RPM
Replacement FilterE-3985
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height1.625 in (41 mm)
CARB EO NumberD-269-59
Street Legal In All US StatesSee Application Link Above
TUV Approved (Europe)No
Overall Height1.875 in (48 mm)
Top MaterialAluminum
Package Contents1 Air Filter
Package Quantity1
Weight3.5 lb (1.6 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

K&N RK-3930X Intake System-Harley Davidson Product Reviews