K&N STOCK REPLACEMENT AIR FILTERS K&N"s replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for virtually every vehicle on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. See applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited WarrantyTM and will be the last air filter your vehicle will ever need.Additonal Fitment:2010-2011 HARLEY DAVIDSON FLHTK Electra Glide Ultra Limited2008-2008 HARLEY DAVIDSON FLHRSE4 Screamin Eagle Road King2009-2009 HARLEY DAVIDSON FLHTCUSE4 CVO Ultra Classic Electra Glide2008-2011 HARLEY DAVIDSON FLHX Street Glide2009-2011 HARLEY DAVIDSON FLHTCUTG Tri-Glide Ultra Classic2010-2010 HARLEY DAVIDSON FLHTCUSE5 CVO Ultra Classic Electra Glide2009-2010 HARLEY DAVIDSON FLHTP Electra Glide Police2008-2011 HARLEY DAVIDSON FLHR Road King2010-2011 HARLEY DAVIDSON FLHXXX Street Glide Trike2008-2011 HARLEY DAVIDSON FLHTC Electra Glide Classic2009-2010 HARLEY DAVIDSON FLHP Road King Police2010-2011 HARLEY DAVIDSON FLTRX Road Glide Custom2008-2008 HARLEY DAVIDSON FLHTCUSE3 Screamin Eagle Ultra Classic Electra Gl2008-2011 HARLEY DAVIDSON FLHTCU Ultra Classic Electra Glide2008-2010 HARLEY DAVIDSON FLTR Road Glide2008-2010 HARLEY DAVIDSON FLHT Electra Glide Standard2008-2011 HARLEY DAVIDSON FLHRC Road King Classic