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K&N · RK-3910-1

Part #: RK-3910-1
UPC: 024844301697

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Description: Intake System-Harley Davidson; The latest addition to K&N's RK Series was developed to get more horsepower from your Twin Cam Harley-Davidson engine. Provides a significant airflow increase to the engine without sacrificing filtration.

Description:

This part number superseded RK-3910.  

Description

K&N's RK Series was developed to get more horsepower from your Twin Cam Harley-Davidson engine. Built around the legendary K&N High-Flow Air Filter, the this RK Series assembly includes an innovative powder coated billet aluminum back plate that eliminates external breathers and features a built-in, dyno-tuned velocity stack. The result is a significant airflow increase to the engine without sacrificing filtration. This RK Series assembly retains a factory appearance by utilizing the stock air cleaner cover. The RK-3910-1 comes with a larger air filter and longer spacers than the RK-3909-1.

Features & benefits

  • Increased Horsepower: Guaranteed to increase horsepower, helping unlock greater performance from your engine.
  • Enhanced Driving Experience: Improves throttle response and improved engine sound.
  • Premium Construction: Built with premium intake materials and a durable, high-quality finish designed for lasting performance.
  • Washable & Reusable Air Filter: Includes a High-Flow Air Filter that can go up to 100,000 miles before cleaning under normal highway driving conditions.

Information

Associated products: E-3980 SPECIAL ORDER Oval Fltr, 99-5000 Filter Care Service Kit Aerosol

Application summary

Year Make / model
1999-2007 Harley-Davidson FLHR Road King
2007 Harley-Davidson FLHRC Road King Classic
2002-2006 Harley-Davidson FLHRCI Road King Classic
2003-2006 Harley-Davidson FLHRI Road King
2004-2007 Harley-Davidson FLHRS Road King Custom
2004-2006 Harley-Davidson FLHRSI Road King Custom
1999-2007 Harley-Davidson FLHT Electra Glide Standard
1999-2005 Harley-Davidson FLHTC Electra Glide Classic
2007 Harley-Davidson FLHTC Electra Glide Classic
2002-2006 Harley-Davidson FLHTCI Electra Glide Classic
2007 Harley-Davidson FLHTCU Electra Glide Ultra Classic
2002-2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic
2003-2006 Harley-Davidson FLHTI Electra Glide Standard
2006-2007 Harley-Davidson FLHX Street Glide
2006 Harley-Davidson FLHXI Street Glide
2006 Harley-Davidson FLST Heritage Softail
2000-2012 Harley-Davidson FLSTC Heritage Softail Classic
2002-2006 Harley-Davidson FLSTCI Heritage Softail Classic
2000-2012 Harley-Davidson FLSTF Fat Boy
2010-2012 Harley-Davidson FLSTFB Fat Boy Lo
2001-2006 Harley-Davidson FLSTFI Fat Boy
2006 Harley-Davidson FLSTI Heritage Softail
2005-2012 Harley-Davidson FLSTN Softail Deluxe
2005-2006 Harley-Davidson FLSTNI Softail Deluxe
2000-2003 Harley-Davidson FLSTS Heritage Springer
2005-2007 Harley-Davidson FLSTSC Softail Springer Classic
2005-2006 Harley-Davidson FLSTSCI Softail Springer Classic
2001-2003 Harley-Davidson FLSTSI Heritage Springer
1999-2002 Harley-Davidson FLTR Road Glide
2007 Harley-Davidson FLTR Road Glide
2002-2006 Harley-Davidson FLTRI Road Glide
2008-2009 Harley-Davidson FXCW Rocker
2008-2011 Harley-Davidson FXCWC Rocker C
1999-2007 Harley-Davidson FXD Dyna Super Glide
2007 Harley-Davidson FXDB Street Bob
2006 Harley-Davidson FXDBI Street Bob
2005 Harley-Davidson FXDC Super Glide Custom
2007 Harley-Davidson FXDC Super Glide Custom
2005-2006 Harley-Davidson FXDCI Super Glide Custom
2004-2006 Harley-Davidson FXDI Dyna Super Glide

Specifications

GTIN
00024844301697
Weight
3.32 lb
Height
4.88 in
Length
11.75 in
Width
9.5 in
EO
Legal US
Life cycle
Available to Order
Alt. part number
RK-3910-1
AAM brand code
KAN
Warehouse brand code
KAN
AAIA brand code
BBWQ

Attributes

AAM Standard Pack
1
Air Box Included
No
Air Filter Color
Red
Air Filter Height
2.188 in (56 mm)
Air Filter Inside Diameter
0 in (0 mm)
Air Filter Material
Cotton Gauze
Air Filter Outlet Shape
Round
Air Filter Shape
Oval
Air Filter Washable
Yes
Alternate Part Number
RK-3910-1
CARB EO Number
D-269-35/55
California Proposition 65
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Clamp Color/Finish
Not Applicable
Clamp Material
No Clamps Required
Clamp Style
No Clamps Required
Clamps Included
No Clamps Included
Color / Finish
Red Filter, Metal Top
Couplers Included
0
Estimated Horsepower Gain
10.76 HP @ 5206 RPM
Horse Power Increase
11 HP
Inlet Diameter
2.25 in (57 mm)
Mass Air Flow Sensor Adapter Included
Mass Air Flow Sensor Adapter Included When Required
Mounting Hardware Included
Yes
Neck Flange
2.25 in (57 mm)
Oil Included
Yes
Overall Height
2.188 in (56 mm)
Package Material
Paperboard
Package Type
Box
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
RPM
5206
Replacement Filter
E-3980
Retail Packaging
Yes
Size
9 Inch
Street Legal In All US States
Not legal for sale or use in California on any pollution controlled motor vehicle. NOTE: Some specific models and years may be legal in CA. Check the CARB status on your parts at knfilters.com.
Style
Oval
TUV Approved (Europe)
No
Title
K&N RK-3910-1 Intake System-Harley Davidson
Top Material
Black Powder Coated
Top Style
Metal
Warranty
No-Hassle Lifetime Limited
Weight
3.3 lb (1.5 kg)

Fitment status

Select a vehicle or engine to see whether this part applies to your application.

Application summary

1999-2007 Harley-Davidson FLHR Road King; 2007 Harley-Davidson FLHRC Road King Classic; 2002-2006 Harley-Davidson FLHRCI Road King Classic; 2003-2006 Harley-Davidson FLHRI Road King; 2004-2007 Harley-Davidson FLHRS Road King Custom; 2004-2006 Harley-Davidson FLHRSI Road King Custom; 1999-2007 Harley-Davidson FLHT Electra Glide Standard; 1999-2005 Harley-Davidson FLHTC Electra Glide Classic; 2007 Harley-Davidson FLHTC Electra Glide Classic; 2002-2006 Harley-Davidson FLHTCI Electra Glide Classic; 2007 Harley-Davidson FLHTCU Electra Glide Ultra Classic; 2002-2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic; 2003-2006 Harley-Davidson FLHTI Electra Glide Standard; 2006-2007 Harley-Davidson FLHX Street Glide; 2006 Harley-Davidson FLHXI Street Glide; 2006 Harley-Davidson FLST Heritage Softail; 2000-2012 Harley-Davidson FLSTC Heritage Softail Classic; 2002-2006 Harley-Davidson FLSTCI Heritage Softail Classic; 2000-2012 Harley-Davidson FLSTF Fat Boy; 2010-2012 Harley-Davidson FLSTFB Fat Boy Lo; 2001-2006 Harley-Davidson FLSTFI Fat Boy; 2006 Harley-Davidson FLSTI Heritage Softail; 2005-2012 Harley-Davidson FLSTN Softail Deluxe; 2005-2006 Harley-Davidson FLSTNI Softail Deluxe; 2000-2003 Harley-Davidson FLSTS Heritage Springer; 2005-2007 Harley-Davidson FLSTSC Softail Springer Classic; 2005-2006 Harley-Davidson FLSTSCI Softail Springer Classic; 2001-2003 Harley-Davidson FLSTSI Heritage Springer; 1999-2002 Harley-Davidson FLTR Road Glide; 2007 Harley-Davidson FLTR Road Glide; 2002-2006 Harley-Davidson FLTRI Road Glide; 2008-2009 Harley-Davidson FXCW Rocker; 2008-2011 Harley-Davidson FXCWC Rocker C; 1999-2007 Harley-Davidson FXD Dyna Super Glide; 2007 Harley-Davidson FXDB Street Bob; 2006 Harley-Davidson FXDBI Street Bob; 2005 Harley-Davidson FXDC Super Glide Custom; 2007 Harley-Davidson FXDC Super Glide Custom; 2005-2006 Harley-Davidson FXDCI Super Glide Custom; 2004-2006 Harley-Davidson FXDI Dyna Super Glide; ...