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RK-3929
$272.99 USD
MSRP $476.99 42.8% Off
Will ship as soon as it becomes available. Not In Stock
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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

THE K&N AIR FILTER THAT I ORDERED WAS SHIPPED OUT AND RECEIVED IN A TIMELY MATTER. I WOULD RECOMMEND IT TO ANYONE LOOKING TO UPGRADE FROM THEIR STOCK FILTER TO A HIGH PERFORMANCE FILTER. AWESOME FILTER!! THIS WILL GO ON MY 2013 HARLEY DAVIDSON STREETGLIDE.

Mike Miston
Michigan
Fast delivery. Chrome finish is a plus. The external socket fitting will make an easy removal on my next oil change. I trust the engineering K & N designs into their products to filter out contaminates to protect my 2006 Harley Davidson 35th Anniversary superglide motorcycle.

Michael Snow
Chicago, Illinois
I have used K&N filters for all of my Harley Davidson applications. I just replaced the HD filter with this and am pleased as usual.

Bill White
Hot Springs, Arkansas