K&N Oval Red 9in Intake System for Harley Davidson

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 backplate 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. 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. Fitment: 1999 Harley Davidson FLHR Road King Base 1999 Harley Davidson FLHT Electra Glide Standard Base 1999 Harley Davidson FLHTC Electra Glide Classic Base 1999 Harley Davidson FLTR Road Glide Base 1999 Harley Davidson FXD Dyna Super Glide Base 1999 Harley Davidson FXDL Dyna Low Rider Base 1999 Harley Davidson FXDS-Conv Dyna Convertible Base 1999 Harley Davidson FXDWG Dyna Wide Glide Base 1999 Harley Davidson FXDX Dyna Super Glide Sport Base 2000 Harley Davidson FLHR Road King Base 2000 Harley Davidson FLHT Electra Glide Standard Base 2000 Harley Davidson FLHTC Electra Glide Classic Base 2000 Harley Davidson FLSTC Heritage Softail Classic Base 2000 Harley Davidson FLSTF Fat Boy Base 2000 Harley Davidson FLSTS Heritage Springer Base 2000 Harley Davidson FLTR Road Glide Base 2000 Harley Davidson FXD Dyna Super Glide Base 2000 Harley Davidson FXDL Dyna Low Rider Base 2000 Harley Davidson FXDS-Conv Dyna Convertible Base 2000 Harley Davidson FXDWG Dyna Wide Glide Base 2000 Harley Davidson FXDX Dyna Super Glide Sport Base 2000 Harley Davidson FXST Softail Standard Base 2000 Harley Davidson FXSTB Night Train Base 2000 Harley Davidson FXSTD Softail Deuce Base 2000 Harley Davidson FXSTS Springer Softail Base 2001 Harley Davidson FLHR Road King Base 2001 Harley Davidson FLHT Electra Glide Standard Base 2001 Harley Davidson FLHTC Electra Glide Classic Base 2001 Harley Davidson FLSTC Heritage Softail Classic Base 2001 Harley Davidson FLSTF Fat Boy Base 2001 Harley Davidson FLSTFI Fat Boy Base 2001 Harley Davidson FLSTS Heritage Springer Base 2001 Harley Davidson FLSTSI Heritage Springer Base 2001 Harley Davidson FLTR Road Glide Base 2001 Harley Davidson FXD Dyna Super Glide Base 2001 Harley Davidson FXDL Dyna Low Rider Base 2001 Harley Davidson FXDWG Dyna Wide Glide Base 2001 Harley Davidson FXDX Dyna Super Glide Sport Base 2001 Harley Davidson FXDXT Dyna Super Glide T-Sport Base 2001 Harley Davidson FXST Softail Standard Base 2001 Harley Davidson FXSTB Night Train Base 2001 Harley Davidson FXSTBI Night Train Base 2001 Harley Davidson FXSTD Softail Deuce Base 2001 Harley Davidson FXSTDI Softail Deuce Base 2001 Harley Davidson FXSTI Softail Standard Base 2001 Harley Davidson FXSTS Springer Softail Base 2001 Harley Davidson FXSTSI Springer Softail Base 2002 Harley Davidson FLHR Road King Base 2002 Harley Davidson FLHRCI Road King Classic Base 2002 Harley Davidson FLHT Electra Glide Standard Base 2002 Harley Davidson FLHTC Electra Glide Classic Base 2002 Harley Davidson FLHTCI Electra Glide Classic Base 2002 Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 2002 Harley Davidson FLSTC Heritage Softail Classic Base 2002 Harley Davidson FLSTCI Heritage Softail Classic Base 2002 Harley Davidson FLSTF Fat Boy Base 2002 Harley Davidson FLSTFI Fat Boy Base 2002 Harley Davidson FLSTS Heritage Springer Base 2002 Harley Davidson FLSTSI Heritage Springer Base 2002 Harley Davidson FLTR Road Glide Base 2002 Harley Davidson FLTRI Road Glide Base 2002 Harley Davidson FXD Dyna Super Glide Base 2002 Harley Davidson FXDL Dyna Low Rider Base 2002 Harley Davidson FXDWG Dyna Wide Glide Base 2002 Harley Davidson FXDX Dyna Super Glide Sport Base 2002 Harley Davidson FXDXT Dyna Super Glide T-Sport Base 2002 Harley Davidson FXST Softail Standard Base 2002 Harley Davidson FXSTB Night Train Base 2002 Harley Davidson FXSTBI Night Train Base 2002 Harley Davidson FXSTD Softail Deuce Base 2002 Harley Davidson FXSTDI Softail Deuce Base 2002 Harley Davidson FXSTI Softail Standard Base 2002 Harley Davidson FXSTS Springer Softail Base 2002 Harley Davidson FXSTSI Springer Softail Base 2003 Harley Davidson FLHR Road King Base 2003 Harley Davidson FLHRCI Road King Classic Base 2003 Harley Davidson FLHRI Road King Base 2003 Harley Davidson FLHT Electra Glide Standard Base 2003 Harley Davidson FLHTC Electra Glide Classic Base 2003 Harley Davidson FLHTCI Electra Glide Classic Base 2003 Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 2003 Harley Davidson FLHTI Electra Glide Standard Base 2003 Harley Davidson FLSTC Heritage Softail Classic Base 2003 Harley Davidson FLSTCI Heritage Softail Classic Base 2003 Harley Davidson FLSTF Fat Boy Base 2003 Harley Davidson FLSTFI Fat Boy Base 2003 Harley Davidson FLSTS Heritage Springer Base 2003 Harley Davidson FLSTSI Heritage Springer Base 2003 Harley Davidson FLTRI Road Glide Base 2003 Harley Davidson FXD Dyna Super Glide Base 2003 Harley Davidson FXDL Dyna Low Rider Base 2003 Harley Davidson FXDWG Dyna Wide Glide Base 2003 Harley Davidson FXDX Dyna Super Glide Sport Base 2003 Harley Davidson FXDXT Dyna Super Glide T-Sport Base 2003 Harley Davidson FXST Softail Standard Base 2003 Harley Davidson FXSTB Night Train Base 2003 Harley Davidson FXSTBI Night Train Base 2003 Harley Davidson FXSTD Softail Deuce Base 2003 Harley Davidson FXSTDI Softail Deuce Base 2003 Harley Davidson FXSTI Softail Standard Base 2003 Harley Davidson FXSTS Springer Softail Base 2003 Harley Davidson FXSTSI Springer Softail Base 2004 Harley Davidson FLHR Road King Base 2004 Harley Davidson FLHRCI Road King Classic Base 2004 Harley Davidson FLHRI Road King Base 2004 Harley Davidson FLHRS Road King Custom Base 2004 Harley Davidson FLHRSI Road King Custom Base 2004 Harley Davidson FLHT Electra Glide Standard Base 2004 Harley Davidson FLHTC Electra Glide Classic Base 2004 Harley Davidson FLHTCI Electra Glide Classic Base 2004 Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 2004 Harley Davidson FLHTI Electra Glide Standard Base 2004 Harley Davidson FLSTC Heritage Softail Classic Base 2004 Harley Davidson FLSTCI Heritage Softail Classic Base 2004 Harley Davidson FLSTF Fat Boy Base 2004 Harley Davidson FLSTFI Fat Boy Base 2004 Harley Davidson FLTRI Road Glide Base 2004 Harley Davidson FXD Dyna Super Glide Base 2004 Harley Davidson FXDI Dyna Super Glide Base 2004 Harley Davidson FXDL Dyna Low Rider Base 2004 Harley Davidson FXDLI Dyna Low Rider Base 2004 Harley Davidson FXDWG Dyna Wide Glide Base 2004 Harley Davidson FXDWGI Dyna Wide Glide Base 2004 Harley Davidson FXDX Dyna Super Glide Sport Base 2004 Harley Davidson FXDXI Dyna Super Glide Sport Base 2004 Harley Davidson FXST Softail Standard Base 2004 Harley Davidson FXSTB Night Train Base 2004 Harley Davidson FXSTBI Night Train Base 2004 Harley Davidson FXSTD Softail Deuce Base 2004 Harley Davidson FXSTDI Softail Deuce Base 2004 Harley Davidson FXSTI Softail Standard Base 2004 Harley Davidson FXSTS Springer Softail Base 2004 Harley Davidson FXSTSI Springer Softail Base 2005 Harley Davidson FLHR Road King Base 2005 Harley Davidson FLHRCI Road King Classic Base 2005 Harley Davidson FLHRI Road King Base 2005 Harley Davidson FLHRS Road King Custom Base 2005 Harley Davidson FLHRSI Road King Custom Base 2005 Harley Davidson FLHT Electra Glide Standard Base 2005 Harley Davidson FLHTC Electra Glide Classic Base 2005 Harley Davidson FLHTCI Electra Glide Classic Base 2005 Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 2005 Harley Davidson FLHTI Electra Glide Standard Base 2005 Harley Davidson FLSTC Heritage Softail Classic Base 2005 Harley Davidson FLSTCI Heritage Softail Classic Base 2005 Harley Davidson FLSTF Fat Boy Base 2005 Harley Davidson FLSTFI Fat Boy Base 2005 Harley Davidson FLSTN Softail Deluxe Base 2005 Harley Davidson FLSTNI Softail Deluxe Base 2005 Harley Davidson FLSTSC Softail Springer Classic Base 2005 Harley Davidson FLSTSCI Softail Springer Classic Base 2005 Harley Davidson FLTRI Road Glide Base 2005 Harley Davidson FXD Dyna Super Glide Base 2005 Harley Davidson FXDC Super Glide Custom Base 2005 Harley Davidson FXDCI Super Glide Custom Base 2005 Harley Davidson FXDI Dyna Super Glide Base 2005 Harley Davidson FXDL Dyna Low Rider Base 2005 Harley Davidson FXDLI Dyna Low Rider Base 2005 Harley Davidson FXDWG Dyna Wide Glide Base 2005 Harley Davidson FXDWGI Dyna Wide Glide Base 2005 Harley Davidson FXDXI Dyna Super Glide Sport Base 2005 Harley Davidson FXST Softail Standard Base 2005 Harley Davidson FXSTB Night Train Base 2005 Harley Davidson FXSTBI Night Train Base 2005 Harley Davidson FXSTD Softail Deuce Base 2005 Harley Davidson FXSTDI Softail Deuce Base 2005 Harley Davidson FXSTI Softail Standard Base 2005 Harley Davidson FXSTS Springer Softail Base 2005 Harley Davidson FXSTSI Springer Softail Base 2006 Harley Davidson FLHR Road King Base 2006 Harley Davidson FLHRCI Road King Classic Base 2006 Harley Davidson FLHRI Road King Base 2006 Harley Davidson FLHRS Road King Custom Base 2006 Harley Davidson FLHRSI Road King Custom Base 2006 Harley Davidson FLHT Electra Glide Standard Base 2006 Harley Davidson FLHTCI Electra Glide Classic Base 2006 Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 2006 Harley Davidson FLHTI Electra Glide Standard Base 2006 Harley Davidson FLHX Street Glide Base 2006 Harley Davidson FLHXI Street Glide Base 2006 Harley Davidson FLST Heritage Softail Base 2006 Harley Davidson FLSTC Heritage Softail Classic Base 2006 Harley Davidson FLSTCI Heritage Softail Classic Base 2006 Harley Davidson FLSTF Fat Boy Base 2006 Harley Davidson FLSTFI Fat Boy Base 2006 Harley Davidson FLSTI Heritage Softail Base 2006 Harley Davidson FLSTN Softail Deluxe Base 2006 Harley Davidson FLSTNI Softail Deluxe Base 2006 Harley Davidson FLSTSC Softail Springer Classic Base 2006 Harley Davidson FLSTSCI Softail Springer Classic Base 2006 Harley Davidson FLTRI Road Glide Base 2006 Harley Davidson FXD Dyna Super Glide Base 2006 Harley Davidson FXDBI Street Bob Base 2006 Harley Davidson FXDCI Super Glide Custom Base 2006 Harley Davidson FXDI Dyna Super Glide Base 2006 Harley Davidson FXDI35 Dyna 35th Anniversary Super Glide Base 2006 Harley Davidson FXDLI Dyna Low Rider Base 2006 Harley Davidson FXDWG Dyna Wide Glide Base 2006 Harley Davidson FXDWGI Dyna Wide Glide Base 2006 Harley Davidson FXST Softail Standard Base 2006 Harley Davidson FXSTB Night Train Base 2006 Harley Davidson FXSTBI Night Train Base 2006 Harley Davidson FXSTD Softail Deuce Base 2006 Harley Davidson FXSTDI Softail Deuce Base 2006 Harley Davidson FXSTI Softail Standard Base 2006 Harley Davidson FXSTS Springer Softail Base 2006 Harley Davidson FXSTSI Springer Softail Base 2007 Harley Davidson FLHR Road King Base 2007 Harley Davidson FLHRC Road King Classic Base 2007 Harley Davidson FLHRS Road King Custom Base 2007 Harley Davidson FLHT Electra Glide Standard Base 2007 Harley Davidson FLHTC Electra Glide Classic Base 2007 Harley Davidson FLHTCU Electra Glide Ultra Classic Base 2007 Harley Davidson FLHX Street Glide Base 2007 Harley Davidson FLSTC Heritage Softail Classic Base 2007 Harley Davidson FLSTF Fat Boy Base 2007 Harley Davidson FLSTN Softail Deluxe Base 2007 Harley Davidson FLSTSC Softail Springer Classic Base 2007 Harley Davidson FLTR Road Glide Base 2007 Harley Davidson FXD Dyna Super Glide Base 2007 Harley Davidson FXDB Street Bob Base 2007 Harley Davidson FXDC Super Glide Custom Base 2007 Harley Davidson FXDL Dyna Low Rider Base 2007 Harley Davidson FXDWG Dyna Wide Glide Base 2007 Harley Davidson FXST Softail Standard Base 2007 Harley Davidson FXSTB Night Train Base 2007 Harley Davidson FXSTC Softail Custom Base 2007 Harley Davidson FXSTD Softail Deuce Base 2008 Harley Davidson FLSTC Heritage Softail Classic Base 2008 Harley Davidson FLSTF Fat Boy Base 2008 Harley Davidson FLSTN Softail Deluxe Base 2008 Harley Davidson FXCW Rocker Base 2008 Harley Davidson FXCWC Rocker C Base 2008 Harley Davidson FXSTB Night Train Base 2008 Harley Davidson FXSTC Softail Custom Base 2009 Harley Davidson FLSTC Heritage Softail Classic Base 2009 Harley Davidson FLSTF Fat Boy Base 2009 Harley Davidson FLSTN Softail Deluxe Base 2009 Harley Davidson FXCW Rocker Base 2009 Harley Davidson FXCWC Rocker C Base 2009 Harley Davidson FXSTB Night Train Base 2009 Harley Davidson FXSTC Softail Custom Base 2010 Harley Davidson FLSTC Heritage Softail Classic Base 2010 Harley Davidson FLSTF Fat Boy Base 2010 Harley Davidson FLSTFB Fat Boy Lo Base 2010 Harley Davidson FLSTN Softail Deluxe Base 2010 Harley Davidson FLTRX Road Glide Custom Base 2010 Harley Davidson FXCWC Rocker C Base 2010 Harley Davidson FXSTC Softail Custom Base 2011 Harley Davidson FLSTC Heritage Softail Classic Base 2011 Harley Davidson FLSTF Fat Boy Base 2011 Harley Davidson FLSTFB Fat Boy Lo Base 2011 Harley Davidson FLSTN Softail Deluxe Base 2011 Harley Davidson FLTRX Road Glide Custom Base 2011 Harley Davidson FXCWC Rocker C Base 2012 Harley Davidson FLSTC Heritage Softail Classic Base 2012 Harley Davidson FLSTF Fat Boy Base 2012 Harley Davidson FLSTFB Fat Boy Lo Base 2012 Harley Davidson FLSTN Softail Deluxe Base