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Custom Assemblies > Intake System-Harley Davidson

 List Price: $567.89
Your Price: $341.99

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RK-3935
 
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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:11.57 HP @ 5203 RPM
Air Filter Color:Red
Air Filter Height:2.188 in (56 mm)
Air Filter Inside Diameter:5.25 in (133 mm)
Air Filter Material:Cotton Gauze
Air Filter Outlet Shape:Not Flanged
Air Filter Shape:Unique
California Restricted:Not legal for sale or use in California
Clamp Material:No Clamps Required
Clamp Style:No Clamps Required
Color:Red
Filter Material:Cotton Gauze
Inlet Diameter:3.25 in (83 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:3.25 in (83 mm)
Overall Height:2.25 in (57 mm)
Part Number:RK-3935
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-3333
Size:10-12
Street Legal In All US States:No
Style:Triangle
Top Material/Finish:Chrome
Top Style:Chrome
TUV Approved (Europe):No
Vacuum Tubing Included:No
Weight:5 lb (2.3 kg)

Horsepower gains based on similar vehicle dynamometer test. Results will vary.


Customer Feedback      Be the first to review part RK-3935

Dear sirs:

All I can say is most people won't believe this but then it's their loss...in miles per gallon that is. I Own 2 Harleys, a 1979 HD Sportster that several years ago I put a K&N air filter on and felt like it doubled it's performance, and a 1999 FLSTF Fat Boy. I didn't rest there, as a year ago I put a K&N on my 2001 Dodge Ram Quad cab Cummins turbo diesel and also felt the increase in performance not to mention the scream of that turbo that I had never really heard from the factory.

Recently two of my buddies and I went on a motorcycle trip to Stecoah, N.C. Before going on the trip I changed all my fluids and serviced the whole bike. I decided to buy a K&N air filter and pitch the stock one. They were riding a 2003 Honda Goldwing, a 2005 Harley Davidson Roadking and I took my 99 Fat Boy. Prior to installing the K&N my Fat Boy got between 40 & 43 MPG. As we went from fuel stop to fuel stop my mileage was as follows: 43 MPG, 47 MPG, 46 MPG, 48 MPG and 52 MPG EVERY tank after that. My buddies only mustered 44 -46 MPG. Most people would ask what about the weight and the speed. Well both my saddle bags were packed, I had a bag with 20 lbs. on my luggage rack, plus my TBags weighed in at about 50 lbs. The weight we carried was all about the same. The motorcycle weights were different, but not enough to warrant the major difference in MPG. Also mine is carbureted and theirs are fuel injected. As far as the speeds, we were cruising on the interstate at 70 to 80 MPH through a whole fuel run which was about 200 miles. Even when I was on the tail of the dragon, which is 318 turns in 11 miles, my mileage stayed at 52 MPG. All I can say is after over 1700 miles on that trip the K&N definitely paid for itself with the increase of 9-12 MPG.

So everyone has a choice. you can pay at the pumps or spend that money on the LAST air filter you will EVER buy.
Ronnie E., Glen Rock, Pennsylvania
Best filters ever. Run them in all my vehicles including my Harley Davidson Motorcycle. Saved a ton of $$$ too by not having to purchase replacement paper filters every time.
Bill Sleeper, Altadena, California
All of my vehicles including my Harley Davidson have K&N Filters installed. They perform without equal.
Robert W.Garcia Sr., Paradise, Texas