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