More Power and Looks for Your Harley Davidson Twin Cam with K&N Street Metal Air Intake

 
 
K&N Air Intake RK-3934 parts breakdown
K&N Air Intake RK-3934 parts breakdown
Dyno Chart for RK-3934 Weld Street Metal kit
Dyno Chart for RK-3934 Weld Street Metal kit
K&N's Street MetalTM Intake Systems are designed to boost performance and add a custom look to your Harley Davidson motorcycle. These intake systems replace the stock intake assembly with a custom-built intake system designed to increase horsepower and torque at the rear wheel. They incorporate a custom aluminum backing plate, an integrated velocity stack (where applicable), and a classic custom cover with a mirror finish. They are designed to give you an increase in power and a long service interval before cleaning is needed.
K&N Air Intake System RK-3934
K&N Air Intake System RK-3934


Offering both performance and good looks, K&N's motorcycle intake system, part number RK-3934, has a classic 7-1/2 inch round shape. It features an open element design for high airflow and includes a custom billet aluminum cover plate, which is polished, and chrome plated. While this air intake is designed for power and torque gains it also provides outstanding air filtration.

K&N dynamometer tests show an estimated increase of 10.23 horsepower and 10.42 lb-ft of torque at 5,155 RPM on a 2010 Harley Davidson Fat Bob with a 96 cubic inch engine. Results may vary with other models.

Part number RK-3934 can be easily installed with basic hand tools in 90 minutes or less. This intake system requires no cutting, or drilling and is backed by the K&N Million Mile Limited Warranty.

K&N's Weld Street Metal Intake System, part number RK-3934, fits most fuel injected Twin-Cam Harley Davidson models from 1999 to 2012. It will not fit 2008 and later Touring Model Harley Davidson motorcycles. See the list below for specific vehicle applications.

Part number RK-3934 will fit the following applications:

2012 Harley Davidson FXDWG Dyna Wide Glide 103 CI
2012 Harley Davidson FXDF Fat Bob 103 CI
2012 Harley Davidson FXDC Dyna Super Glide Custom 96 CI
2012 Harley Davidson FXDB Dyna Street Bob 96 CI
2012 Harley Davidson FLSTN Softail Deluxe 103 CI
2012 Harley Davidson FLSTFB Softail Fat Boy Lo 103 CI
2012 Harley Davidson FLSTF Fat Boy 103 CI
2012 Harley Davidson FLSTC Heritage Softail Classic 103 CI
2012 Harley Davidson FLS Softail Slim 103 CI
2012 Harley Davidson FLD Dyna Switchback 103 CI
2011 Harley Davidson FXDWG Dyna Wide Glide 96 CI
2011 Harley Davidson FXDF Fat Bob 96 CI
2011 Harley Davidson FXDC Dyna Super Glide Custom 96 CI
2011 Harley Davidson FXDB Dyna Street Bob 96 CI
2011 Harley Davidson FXCWC Rocker C 96 CI
2011 Harley Davidson FLSTSB Softail Cross Bones 96 CI
2011 Harley Davidson FLSTN Softail Deluxe 96 CI
2011 Harley Davidson FLSTFB Softail Fat Boy Lo 96 CI
2011 Harley Davidson FLSTF Fat Boy 96 CI
2011 Harley Davidson FLSTC Heritage Softail Classic 96 CI
2010 Harley Davidson FXSTC Softail Custom 96 CI
2010 Harley Davidson FXDWG Dyna Wide Glide 96 CI
2010 Harley Davidson FXDI Dyna Super Glide F/I 96 CI
2010 Harley Davidson FXDF Fat Bob 96 CI
2010 Harley Davidson FXDC Dyna Super Glide Custom 96 CI
2010 Harley Davidson FXDB Dyna Street Bob 96 CI
2010 Harley Davidson FXD Dyna Super Glide 96 CI
2010 Harley Davidson FXCWC Rocker C 96 CI
2010 Harley Davidson FXCW Rocker 96 CI
2010 Harley Davidson FLSTSB Softail Cross Bones 96 CI
2010 Harley Davidson FLSTN Softail Deluxe 96 CI
2010 Harley Davidson FLSTFB Softail Fat Boy Lo 96 CI
2010 Harley Davidson FLSTF Fat Boy 96 CI
2010 Harley Davidson FLSTC Heritage Softail Classic 96 CI
2009 Harley Davidson FXSTC Softail Custom 96 CI
2009 Harley Davidson FXSTB Night Train 96 CI
2009 Harley Davidson FXDWG Dyna Wide Glide 96 CI
2009 Harley Davidson FXDL Dyna Low Rider 96 CI
2009 Harley Davidson FXDF Fat Bob 96 CI
2009 Harley Davidson FXDC Dyna Super Glide Custom 96 CI
2009 Harley Davidson FXDB Dyna Street Bob 96 CI
2009 Harley Davidson FXD Dyna Super Glide 96 CI
2009 Harley Davidson FXCWC Rocker C 96 CI
2009 Harley Davidson FXCW Rocker 96 CI
2009 Harley Davidson FLSTSB Softail Cross Bones 96 CI
2009 Harley Davidson FLSTN Softail Deluxe 96 CI
2009 Harley Davidson FLSTF Fat Boy 96 CI
2009 Harley Davidson FLSTC Heritage Softail Classic 96 CI
2008 Harley Davidson FXSTC Softail Custom 96 CI
2008 Harley Davidson FXSTB Night Train 96 CI
2008 Harley Davidson FXDWG Dyna Wide Glide 96 CI
2008 Harley Davidson FXDL Dyna Low Rider 96 CI
2008 Harley Davidson FXDF Fat Bob 96 CI
2008 Harley Davidson FXDC Dyna Super Glide Custom 96 CI
2008 Harley Davidson FXDB Dyna Street Bob 96 CI
2008 Harley Davidson FXD Dyna Super Glide 96 CI
2008 Harley Davidson FXCWC Rocker C 96 CI
2008 Harley Davidson FXCW Rocker 96 CI
2008 Harley Davidson FLSTSB Softail Cross Bones 96 CI
2008 Harley Davidson FLSTN Softail Deluxe 96 CI
2008 Harley Davidson FLSTF Fat Boy 96 CI
2008 Harley Davidson FLSTC Heritage Softail Classic 96 CI
2007 Harley Davidson FXSTD Softail Deuce 96 CI
2007 Harley Davidson FXSTC Softail Custom 96 CI
2007 Harley Davidson FXSTB Night Train 96 CI
2007 Harley Davidson FXST Softail Standard 96 CI
2007 Harley Davidson FXDWG Dyna Wide Glide 96 CI
2007 Harley Davidson FXDL Dyna Low Rider 96 CI
2007 Harley Davidson FXDC Dyna Super Glide Custom 96 CI
2007 Harley Davidson FXDB Dyna Street Bob 96 CI
2007 Harley Davidson FXD Dyna Super Glide 96 CI
2007 Harley Davidson FLTR Road Glide 96 CI
2007 Harley Davidson FLSTN Softail Deluxe 96 CI
2007 Harley Davidson FLSTF Fat Boy 96 CI
2007 Harley Davidson FLSTC Heritage Softail Classic 96 CI
2007 Harley Davidson FLHX Street Glide 96 CI
2007 Harley Davidson FLHTCU Ultra Classic Electra Glide 96 CI
2007 Harley Davidson FLHTC Electra Glide Classic 96 CI
2007 Harley Davidson FLHT Electra Glide Standard 96 CI
2007 Harley Davidson FLHRS Road King Custom 96 CI
2007 Harley Davidson FLHRC Road King Classic 96 CI
2007 Harley Davidson FLHR Road King 96 CI
2006 Harley Davidson FXSTSI Spring Softail F/I 88 CI
2006 Harley Davidson FXSTI Softail Standard F/I 88 CI
2006 Harley Davidson FXSTDI Softail Deuce F/I 88 CI
2006 Harley Davidson FXSTBI Night Train F/I 88 CI
2006 Harley Davidson FXDWGI Dyna Wide Glide F/I 88 CI
2006 Harley Davidson FXDLI Dyna Low Rider F/I 88 CI
2006 Harley Davidson FXDI35 35TH Anniv. Super Glide F/I 88 CI
2006 Harley Davidson FXDI Dyna Super Glide F/I 88 CI
2006 Harley Davidson FXDCI Dyna Super Glide Custom F/I 88 CI
2006 Harley Davidson FXDC Dyna Super Glide Custom 96 CI
2006 Harley Davidson FXDBI Street Bob F/I 88 CI
2006 Harley Davidson FXD Dyna Super Glide 96 CI
2006 Harley Davidson FLTRI Road Glide F/I 88 CI
2006 Harley Davidson FLSTNI Softail Deluxe F/I 88 CI
2006 Harley Davidson FLSTI Heritage Softail F/I 88 CI
2006 Harley Davidson FLSTFI Fat Boy F/I 88 CI
2006 Harley Davidson FLSTCI Heritage Softail Classic F/I 88 CI
2006 Harley Davidson FLSTC Heritage Softail Classic 96 CI
2006 Harley Davidson FLHXI Street Glide F/I 88 CI
2006 Harley Davidson FLHTI Electra Glide Standard F/I 88 CI
2006 Harley Davidson FLHTCUI Electra Glide Ultra Classic F/I 88 CI
2006 Harley Davidson FLHTCI Electra Glide Classic F/I 88 CI
2006 Harley Davidson FLHRSI Road King Custom F/I 88 CI
2006 Harley Davidson FLHRI Road King F/I 88 CI
2006 Harley Davidson FLHRCI Road King Classic F/I 88 CI
2005 Harley Davidson FXSTSI Spring Softail F/I 88 CI
2005 Harley Davidson FXSTI Softail Standard F/I 88 CI
2005 Harley Davidson FXSTDI Softail Deuce F/I 88 CI
2005 Harley Davidson FXSTBI Night Train F/I 88 CI
2005 Harley Davidson FXDXI Dyna Super Glide Sport F/I 88 CI
2005 Harley Davidson FXDWGI Dyna Wide Glide F/I 88 CI
2005 Harley Davidson FXDLI Dyna Low Rider F/I 88 CI
2005 Harley Davidson FXDI Dyna Super Glide F/I 88 CI
2005 Harley Davidson FXDCI Dyna Super Glide Custom F/I 88 CI
2005 Harley Davidson FXDC Dyna Super Glide Custom 96 CI
2005 Harley Davidson FXD Dyna Super Glide 96 CI
2005 Harley Davidson FLTRI Road Glide F/I 88 CI
2005 Harley Davidson FLSTNI Softail Deluxe F/I 88 CI
2005 Harley Davidson FLSTFI Fat Boy F/I 88 CI
2005 Harley Davidson FLSTCI Heritage Softail Classic F/I 88 CI
2005 Harley Davidson FLSTC Heritage Softail Classic 96 CI
2005 Harley Davidson FLHTI Electra Glide Standard F/I 88 CI
2005 Harley Davidson FLHTCUI Electra Glide Ultra Classic F/I 88 CI
2005 Harley Davidson FLHTCI Electra Glide Classic F/I 88 CI
2005 Harley Davidson FLHRSI Road King Custom F/I 88 CI
2005 Harley Davidson FLHRI Road King F/I 88 CI
2005 Harley Davidson FLHRCI Road King Classic F/I 88 CI
2004 Harley Davidson FXSTSI Spring Softail F/I 88 CI
2004 Harley Davidson FXSTI Softail Standard F/I 88 CI
2004 Harley Davidson FXSTDI Softail Deuce F/I 88 CI
2004 Harley Davidson FXSTBI Night Train F/I 88 CI
2004 Harley Davidson FXDXI Dyna Super Glide Sport F/I 88 CI
2004 Harley Davidson FXDWGI Dyna Wide Glide F/I 88 CI
2004 Harley Davidson FXDLI Dyna Low Rider F/I 88 CI
2004 Harley Davidson FXDI Dyna Super Glide F/I 88 CI
2004 Harley Davidson FXD Dyna Super Glide 96 CI
2004 Harley Davidson FLTRI Road Glide F/I 88 CI
2004 Harley Davidson FLSTFI Fat Boy F/I 88 CI
2004 Harley Davidson FLSTCI Heritage Softail Classic F/I 88 CI
2004 Harley Davidson FLHTI Electra Glide Standard F/I 88 CI
2004 Harley Davidson FLHTCUI Electra Glide Ultra Classic F/I 88 CI
2004 Harley Davidson FLHTCI Electra Glide Classic F/I 88 CI
2004 Harley Davidson FLHRSI Road King Custom F/I 88 CI
2004 Harley Davidson FLHRI Road King F/I 88 CI
2004 Harley Davidson FLHRCI Road King Classic F/I 88 CI
2003 Harley Davidson FXSTSI Spring Softail F/I 88 CI
2003 Harley Davidson FXSTI Softail Standard F/I 88 CI
2003 Harley Davidson FXSTDI Softail Deuce F/I 88 CI
2003 Harley Davidson FXSTBI Night Train F/I 88 CI
2003 Harley Davidson FLTRI Road Glide F/I 88 CI
2003 Harley Davidson FLSTSI Heritage Spring F/I 88 CI
2003 Harley Davidson FLSTFI Fat Boy F/I 88 CI
2003 Harley Davidson FLSTCI Heritage Softail Classic F/I 88 CI
2003 Harley Davidson FLHTI Electra Glide Standard F/I 88 CI
2003 Harley Davidson FLHTCUI Electra Glide Ultra Classic F/I 88 CI
2003 Harley Davidson FLHTCI Electra Glide Classic F/I 88 CI
2003 Harley Davidson FLHRI Road King F/I 88 CI
2003 Harley Davidson FLHRCI Road King Classic F/I 88 CI
2002 Harley Davidson FXSTSI Spring Softail F/I 88 CI
2002 Harley Davidson FXSTI Softail Standard F/I 88 CI
2002 Harley Davidson FXSTDI Softail Deuce F/I 88 CI
2002 Harley Davidson FXSTBI Night Train F/I 88 CI
2002 Harley Davidson FLTRI Road Glide F/I 88 CI
2002 Harley Davidson FLSTSI Heritage Spring F/I 88 CI
2002 Harley Davidson FLSTFI Fat Boy F/I 88 CI
2002 Harley Davidson FLSTCI Heritage Softail Classic F/I 88 CI
2002 Harley Davidson FLHTCUI Electra Glide Ultra Classic F/I 88 CI
2002 Harley Davidson FLHTCI Electra Glide Classic F/I 88 CI
2002 Harley Davidson FLHRI Road King F/I 88 CI
2002 Harley Davidson FLHRCI Road King Classic F/I 88 CI
2001 Harley Davidson FXSTSI Spring Softail F/I 88 CI
2001 Harley Davidson FXSTI Softail Standard F/I 88 CI
2001 Harley Davidson FXSTDI Softail Deuce F/I 88 CI
2001 Harley Davidson FXSTBI Night Train F/I 88 CI
2001 Harley Davidson FLTRI Road Glide F/I 88 CI
2001 Harley Davidson FLSTSI Heritage Spring F/I 88 CI
2001 Harley Davidson FLSTFI Fat Boy F/I 88 CI
2001 Harley Davidson FLSTCI Heritage Softail Classic F/I 88 CI
2001 Harley Davidson FLHTCUI Electra Glide Ultra Classic F/I 88 CI
2001 Harley Davidson FLHTCI Electra Glide Classic F/I 88 CI
2001 Harley Davidson FLHRI Road King F/I 88 CI
2001 Harley Davidson FLHRCI Road King Classic F/I 88 CI
2000 Harley Davidson FLTRI Road Glide F/I 88 CI
2000 Harley Davidson FLHTCUI Electra Glide Ultra Classic F/I 88 CI
2000 Harley Davidson FLHTCI Electra Glide Classic F/I 88 CI
2000 Harley Davidson FLHRI Road King F/I 88 CI
2000 Harley Davidson FLHRCI Road King Classic F/I 88 CI
1999 Harley Davidson FLTRI Road Glide F/I 88 CI
1999 Harley Davidson FLHTCUI Electra Glide Ultra Classic F/I 88 CI
1999 Harley Davidson FLHTCI Electra Glide Classic F/I 88 CI
1999 Harley Davidson FLHRCI Road King Classic F/I 88 CI

Find K&N products for your vehicle using the K&N application search then use the K&N dealer search to find a K&N dealer in your part of the world.



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K&N Engineering in Riverside California is the world's leading manufacturer of washable performance air filters and air intake systems. K&N invented the reusable high flow cotton air filter in 1969 and has been perfecting the technology ever since. K&N is a world class filtration company selling air filters, oil filters, and intakes in over 30 countries. K&N sells over 5,000 products designed for cars, trucks, motorcycles, engines, and industrial applications. From their Million Mile Warranty to their Consumer Protection Pledge, K&N stands behind their products and their consumers 100%. The distinctive K&N logo represents performance from one of the original performance companies. For more information, visit knfilters.com.

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