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K&N RK-3934 4.5 out of 5 stars 2 Customer Reviews
Custom Assemblies > Intake System-Harley Davidson

List Price: $491.92
Your Price: $296.99

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K&N’s Street Metal™ Series High-Flow Air Intake Systems provide a good looking appearance, offer increased airflow and deliver more horsepower & torque to your Harley-Davidson® motorcycle. These intake systems increase 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. A durable mounting gasket is also included to help absorb vibration. The K&N High-Flow Air Filter™ is washable, reusable, pre-oiled and ready for installation. Simple designed custom covers give this air intake good looks while powering down the highway or at your local show.

[RK Series Street Metal High Flow Air Intakes for Harley-Davidson Motorcycles]
  • Designed for Harley-Davidson motorcycles
  • Increase horsepower and torque
  • Easy to install
  • Made in USA
  • Backed by K&N warranty

Product Specifications

Estimated Horsepower Gain:10.23 HP @ 5155 RPM
Air Filter Color:Red
Air Filter Height:2.25 in (57 mm)
Air Filter Inside Diameter:6.125 in (156 mm)
Air Filter Material:Cotton Gauze
Air Filter Outlet Shape:Not Flanged
Air Filter Shape:Round
California Restricted:Not legal for sale or use in California
Clamp Material:No Clamps Required
Clamp Style:No Clamps Required
Filter Material:Cotton Gauze
Inlet Diameter:2.4 in (61 mm)
Intake Pipe Ports:All intake tube ports needed for the specified applications are included
Mass Air Flow Sensor Adapter Included:Mass Air Flow Sensor Adapter Included When Required
Mounting Hardware Included:Yes
Neck Flange:2.4 in (61 mm)
Overall Height:2.5 in (64 mm)
Part Number:RK-3934
Product Box Height:4.88 in (124 mm)
Product Box Length:11.75 in (298 mm)
Product Box Width:9.5 in (241 mm)
Product Style:Motorcycle Intake System
Replacement Filter:E-3336
Street Legal In All US States:No
Top Material/Finish:Chrome
Top Style:Chrome
TUV Approved (Europe):No
Vacuum Tubing Included:No
Weight:4.8 lb (2.2 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

Product Reviews

 Love this filter. Great build quality, fantastic looks and the 6th gear on my 88ci has gone from overdrive to a fully useable gear with clean, two up acceleration from 60mph onwards. It does stick out more than the stock a/c but barely notice that with mid controls. Praise where it's due.
Ste B., Manchester, UK
 Does a great job of letting air in to the motor, but does stick out a lot more than the stock air filter and gets in the way when trying to get to the rear brake.
mike, Addison, Texas