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K&N RK-3952 Intake System-Harley Davidson

Custom Assemblies / Intake System-Harley Davidson
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RK-3952
$203.99 USD
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Product Overview

  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Cast aluminum high-volume, performance air intake housing in black
  • Washable and reusable K&N High-Flow cotton air filter that provides outstanding performance and protection
  • Integrated internal velocity stack
  • Built-in breathers replace external OE breathers
  • Easy to install, usually in 90 minutes or less
K&N Street Metal Air Intake Systems for Harley Davidson® motorcycles replace the restrictive stock OE air cleaner with an oversized K&N High-Flow Air Filter and a high-volume cast aluminum housing. If you’re looking for an aggressive appearance but want a significant increase in airflow, resulting in more power, this high-flow air intake system is exactly what your Harley needs. Installation is so simple, it can usually be done in 90 minutes or less. The K&N air filter is washable, reusable, pre-oiled and ready for installation. This intake system features an updated, modern look with an oval-shaped matte black housing. Silver details and sanded fins further enhance the streamlined look. Internal breathers provide a sleek, clean appearance. This air intake has a classic styling with a savage appeal. These K&N air intakes are street legal in most states. They are not legal for use in California and other states adopting California emission standards.

[RK Series Street Metal High Flow Air Intakes for Harley-Davidson Motorcycles]
Estimated Horsepower Gain7.12 HP @ 4668 RPM
Replacement FilterE-3988
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height2.39 in (61 mm)
CARB EO NumberD-269-59
Street Legal In All US StatesSee Application Link Above
TUV Approved (Europe)No
Overall Height4.25 in (108 mm)
Top MaterialBlack Powder Coated
Package Contents1 Air Filter
Package Quantity1
Weight4.1 lb (1.9 kg)
Product Box Height4.88 in (124 mm)
Product Box Length12 in (305 mm)
Product Box Width9.5 in (241 mm)
Housing MaterialAluminum
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-3952 Intake System-Harley Davidson Product Reviews

Monday, July 9, 2018 - Part RK-3952
The fit was perfect. I can tell Arline is breathing easy now. Good products. Lionel

Lionel Weber
Jeanerette, Louisiana