K&N Brings More Power to Select 1999-2016 Harley Twin Cams with Street Metal Air Intake

K&N RK-3933 Street Metal intake components
K&N RK-3933 Street Metal intake components
Dyno Chart for the RK-3933 on the 96 cubic inch motor
Dyno Chart for the RK-3933 on the 96 cubic inch motor
Harley Davidson motorcycles carry a specific exhaust note that can be recognized from a mile away. When a group of them hogs ride together, the earth literally shakes as they pass by. There is nothing quite like an American V-twin rumble. Another bonus about Harleys is the endless aftermarket products available. It gives riders the opportunity to customize their bike however they see fit. Personality definitely takes shape when building your own Harley. Some like chrome, others like black. Some like old, some like new. Some like white walls, some don't. The list is endless.
K&N Hammer Street Metal Intake RK-3933
K&N Hammer Street Metal Intake RK-3933


One company that many Harley riders relate to and trust is K&N air filters. Many riders have used K&N products on their bikes for the last four decades. The performance, reliability, and reusability of a K&N air filter allow riders to ensure their bike is getting maximum protection for many miles down the road.

If you check out your neighbors Harley you may notice that their Road King is spotless. That is because most Harley owners are meticulous when it comes to their bikes. The people at K&N feel the same way. Dirt does not belong in or on your Harley Davidson. Protection is crucial.

Also important is performance. That is why K&N recently designed this aftermarket air intake system that can really wake up that powerful V-twin engine. K&N's Street MetalTM line of air intakes include part RK-3933, also known as the "Hammer" design. It is constructed around K&N's HD-0800 replacement air filter and includes a custom backing plate, billet air filter cover, and the hardware needed for installation. This open element style air intake greatly reduces air restriction.

K&N dyno tested a 2010 Fat Bob with the 96 cubic inch motor while equipped with the RK-3933 air intake. Test results showed an estimated gain of 10.1 horsepower and 10.2 lb-ft of torque to the rear wheel at 5204 rpm. This is quite a substantial gain for any vehicle on the road. Testing on a 2006 Harley Davidson Road King with 88 cubic inch motor revealed an estimated 7 horsepower at 5204 rpm.

You can most certainly trust that RK-3933 is made from high quality parts, because K&N backs it with their Million Mile Limited Warranty. So if you are looking for a little more power and increased throttle response, check to see if RK-3933 is listed for your Harley Twin Cam motorcycle below:

2016 HARLEY DAVIDSON FXDWG DYNA WIDE GLIDE 103 CI
2016 HARLEY DAVIDSON FXDL DYNA LOW RIDER 103 CI
2016 HARLEY DAVIDSON FXDF FAT BOB 103 CI
2016 HARLEY DAVIDSON FXDB DYNA STREET BOB 103 CI
2016 HARLEY DAVIDSON FLD SWITCHBACK 103 CI
2015 HARLEY DAVIDSON FXSB BREAKOUT 103 CI
2015 HARLEY DAVIDSON FXDWG DYNA WIDE GLIDE 103 CI
2015 HARLEY DAVIDSON FXDL DYNA LOW RIDER 103 CI
2015 HARLEY DAVIDSON FXDF FAT BOB 103 CI
2015 HARLEY DAVIDSON FXDB DYNA STREET BOB 103 CI
2015 HARLEY DAVIDSON FLSTN SOFTAIL DELUXE 103 CI
2015 HARLEY DAVIDSON FLSTFB SOFTAIL FAT BOY LO 103 CI
2015 HARLEY DAVIDSON FLSTF FAT BOY 103 CI
2015 HARLEY DAVIDSON FLSTC HERITAGE SOFTAIL CLASSIC 103 CI
2015 HARLEY DAVIDSON FLS SOFTAIL SLIM 103 CI
2015 HARLEY DAVIDSON FLD SWITCHBACK 103 CI
2014 HARLEY DAVIDSON FXSB BREAKOUT 103 CI
2014 HARLEY DAVIDSON FXDWG DYNA WIDE GLIDE 103 CI
2014 HARLEY DAVIDSON FXDL DYNA LOW RIDER 103 CI
2014 HARLEY DAVIDSON FXDF FAT BOB 103 CI
2014 HARLEY DAVIDSON FXDC DYNA SUPER GLIDE CUSTOM 103 CI
2014 HARLEY DAVIDSON FXDB DYNA STREET BOB 103 CI
2014 HARLEY DAVIDSON FLSTN SOFTAIL DELUXE 103 CI
2014 HARLEY DAVIDSON FLSTFB SOFTAIL FAT BOY LO 103 CI
2014 HARLEY DAVIDSON FLSTF FAT BOY 103 CI
2014 HARLEY DAVIDSON FLSTC HERITAGE SOFTAIL CLASSIC 103 CI
2014 HARLEY DAVIDSON FLS SOFTAIL SLIM 103 CI
2014 HARLEY DAVIDSON FLD SWITCHBACK 103 CI
2013 HARLEY DAVIDSON FXS BLACKLINE 103 CI
2013 HARLEY DAVIDSON FXDWG DYNA WIDE GLIDE 103 CI
2013 HARLEY DAVIDSON FXDF FAT BOB 103 CI
2013 HARLEY DAVIDSON FXDC DYNA SUPER GLIDE CUSTOM 96 CI
2013 HARLEY DAVIDSON FXDB DYNA STREET BOB 96 CI
2013 HARLEY DAVIDSON FLSTN SOFTAIL DELUXE 103 CI
2013 HARLEY DAVIDSON FLSTFB SOFTAIL FAT BOY LO 103 CI
2013 HARLEY DAVIDSON FLSTF FAT BOY 103 CI
2013 HARLEY DAVIDSON FLSTC HERITAGE SOFTAIL CLASSIC 103 CI
2013 HARLEY DAVIDSON FLS SOFTAIL SLIM 103 CI
2013 HARLEY DAVIDSON FLD SWITCHBACK 103 CI
2012 HARLEY DAVIDSON FXS BLACKLINE 103 CI
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 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 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 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 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 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
2008 HARLEY DAVIDSON FLHX STREET GLIDE 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 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 FLSTSC SOFTAIL SPRINGER CLASSIC 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 SPRINGER 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 FXDBI STREET BOB F/I 88 CI
2006 HARLEY DAVIDSON FLTRI ROAD GLIDE F/I 88 CI
2006 HARLEY DAVIDSON FLSTSCI SOFTAIL SPRINGER CLASSIC 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 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 SPRINGER 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 FLTRI ROAD GLIDE F/I 88 CI
2005 HARLEY DAVIDSON FLSTSCI SOFTAIL SPRINGER CLASSIC 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 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 SPRINGER 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 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 SPRINGER 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 SPRINGER 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 SPRINGER 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 SPRINGER 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 SPRINGER 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 - w/Delphi Fuel Injection
2001 HARLEY DAVIDSON FLSTSI HERITAGE SPRINGER 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 - w/Delphi Fuel Injection
2001 HARLEY DAVIDSON FLHTCI ELECTRA GLIDE CLASSIC F/I 88 CI - w/Delphi Fuel Injection
2001 HARLEY DAVIDSON FLHRI ROAD KING F/I 88 CI - w/Delphi Fuel Injection
2001 HARLEY DAVIDSON FLHRCI ROAD KING CLASSIC F/I 88 CI - w/Delphi Fuel Injection
2000 HARLEY DAVIDSON FLTRI ROAD GLIDE F/I 88 CI - w/Delphi Fuel Injection
2000 HARLEY DAVIDSON FLHTCUI ELECTRA GLIDE ULTRA CLASSIC F/I 88 CI - w/Delphi Fuel Injection
2000 HARLEY DAVIDSON FLHTCI ELECTRA GLIDE CLASSIC F/I 88 CI - w/Delphi Fuel Injection
2000 HARLEY DAVIDSON FLHRI ROAD KING F/I 88 CI - w/Delphi Fuel Injection
2000 HARLEY DAVIDSON FLHRCI ROAD KING CLASSIC F/I 88 CI - w/Delphi Fuel Injection
1999 HARLEY DAVIDSON FLTRI ROAD GLIDE F/I 88 CI - w/Delphi Fuel Injection
1999 HARLEY DAVIDSON FLHTCUI ELECTRA GLIDE ULTRA CLASSIC F/I 88 CI - w/Delphi Fuel Injection
1999 HARLEY DAVIDSON FLHTCI ELECTRA GLIDE CLASSIC F/I 88 CI - w/Delphi Fuel Injection
1999 HARLEY DAVIDSON FLHRCI ROAD KING CLASSIC F/I 88 CI - w/Delphi Fuel Injection

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