K&N air intake systems are engineered for increased performance, outstanding durability, and sleek aesthetics—and are available in an assortment of finishes and powder coatings. K&N's state-of-the-art High-Flow Air Filter™ helps to shield your engine from contaminants, while a meticulously engineered aerodynamic tube design contributes to a guaranteed increase in horsepower and torque. K&N air intake systems are designed to improve acceleration, towing, and throttle response while providing world class protection for your engine. Our intakes are dyno-tested and provide up to 50% more airflow compared to OEM intake systems. K&N intakes are easy to install and maintain with air filter cleaning required only every 100,000 miles. Vehicle Fitment: 2016-2017 HARLEY DAVIDSON FLS Softail Slim; 2016-2017 HARLEY DAVIDSON FLSS Softail Slim S; 2016-2017 HARLEY DAVIDSON FLSTC Heritage Softail Classic; 2016-2017 HARLEY DAVIDSON FLSTF Fat Boy; 2016-2017 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo; 2016-2017 HARLEY DAVIDSON FLSTFBS Fat Boy S; 2016-2017 HARLEY DAVIDSON FXSB Breakout; 2008-2016 HARLEY DAVIDSON FLHR Road King; 2015-2016 HARLEY DAVIDSON FLHTK Ultra Limited; 2015-2016 HARLEY DAVIDSON FLHTKL Ultra Limited Low; 2016 HARLEY DAVIDSON FLHX Street Glide; 2014-2016 HARLEY DAVIDSON FLHXS Street Glide Special; 2015-2016 HARLEY DAVIDSON FLRT Freewheeler; 2015-2016 HARLEY DAVIDSON FLTRX Road Glide; 2015-2016 HARLEY DAVIDSON FLTRXS Road Glide Special; 2011-2014 HARLEY DAVIDSON FLHTK Electra Glide Ultra Limited; 2010-2014 HARLEY DAVIDSON FLTRX Road Glide Custom; 2008-2013 HARLEY DAVIDSON FLHRC Road King Classic; 2008-2013 HARLEY DAVIDSON FLHTC Electra Glide Classic; 2008-2013 HARLEY DAVIDSON FLHTCU Ultra Classic Electra Glide; 2009-2013 HARLEY DAVIDSON FLHTCUTG Tri Glide Ultra Classic; 2011-2013 HARLEY DAVIDSON FLTRU Road Glide Ultra; 2009-2012 HARLEY DAVIDSON FLHP Road King Police; 2012 HARLEY DAVIDSON FLHTCU Electra Glide Ultra Classic; 2009-2012 HARLEY DAVIDSON FLHTP Electra Glide Police; 2010-2011 HARLEY DAVIDSON FLHXXX Street Glide Trike; 2008-2010 HARLEY DAVIDSON FLHT Electra Glide Standard; 2010 HARLEY DAVIDSON FLHTCUSE5 CVO Ultra Classic Electra Glide; 2008-2010 HARLEY DAVIDSON FLTR Road Glide; 2008 HARLEY DAVIDSON FLHRSE4 Screamin Eagle Road King