SEARCH BY VEHICLE

RK-3929
$272.99 USD
MSRP $476.99 42.8% Off
In Stock & Ready to Ship! Free Ground Shipping!
Find a Dealer

K&N RK-3929

Custom Assemblies > Intake System-Harley Davidson
  • Increases power
  • Washable and reusable
  • Provides increased air flow
  • Fits inside stock cover
K&N's Sportster RK Series Air Cleaner will get more horsepower from your Harley Davidson Sportster motorcycle. This complete assembly fits inside the stock air cleaner cover, and provides a significant increase in airflow.

[More Information on High-Flow Air Intake Systems for Harley-Davidson Motorcycles]

Product Specifications

Estimated Horsepower Gain4.4 HP @ 5497 RPM
Air Filter ColorRed
Air Filter Height2.25 in (57 mm)
Air Filter Inside Diameter8.063 in (205 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeNot Flanged
Air Filter ShapeOval
Clamp MaterialNo Clamps Required
Clamp StyleNo Clamps Required
Clamps IncludedNo Clamps Included
ColorRed
Filter MaterialCotton Gauze
Inlet Diameter2.5 in (64 mm)
Mounting Hardware IncludedYes
Neck Flange2.5 in (64 mm)
Overall Height2.5 in (64 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-3040
Size10-12
Street Legal In All US StatesSee Application Link Above
StyleOval
Top Material/FinishAluminum
Top StyleMetal
TUV Approved (Europe)No
Weight3.1 lb (1.4 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

Customer Feedback

Be the first to review part RK-3929
K&N has a great web site. I used their vehicle search to find the correct filter for my Harley Davidson 103. I really like the nut on the end of the filter as it makes installation and removal easy, no special tools required. An overall excellent experience Fast shipping as well.

Harold Brooks
San Antonio, Texas
Noticed right away that car had more power. Increased fuel mileage almost two and a half mpg. I always replace the stock filter with a K&N. I have 2 Pickups and 3 cars and a Harley Davidson Street Glide all have K&N filters.

Terry Hagg
Wheatland, Louisianna
This filter designed spared me the trouble of using the Harley Davidson stock replacement kit or the expensive naked filter assembly. I have hi-flow performance concealed in the original housing. My bike is a very new production model with limited after market products available, so Thanks K&N. Harley Davidson Street 750 owner.

Brother Andy
Maryland