Uncompromised performance through FOXs patented internal bypass technology delivers the feel of near-endless suspension travel. Exclusive internal bypass technology allows oil to flow around the piston at some points of the stroke while creating humongous pressure at other points supporting the vehicle like no other product can.Floating through terrain is accomplished with FOXs ride zone combining a race-developed shock piston, internal bypass and Dual Speed Compression adjustment allowing fine tuning for weight, terrain and speed.Dominate any terrain with the brute strength of 3- and 2.5-inch aluminum bodies, cactus cooler reservoirs and 7/8 shafts with redundant seals, all proven in the harshest of environments under the toughest of conditions.Installation InstructionsTechnical BulletinTechnical BulletinInstallation InstructionsThis Part Fits:YearMakeModelSubmodel2010-2014FordF-150FX22004-2014FordF-150FX42006-2008,2010-2012FordF-150Harley-Davidson Edition2005-2020FordF-150King Ranch2004-2020FordF-150Lariat2011FordF-150Lariat Limited2013-2014,2016-2020FordF-150Limited2009-2020FordF-150Platinum2018-2020FordF-150Police Responder2017-2020FordF-150Raptor2016-2020FordF-150SSV2004-2014FordF-150STX2010-2014FordF-150SVT Raptor2008FordF-150THE 60TH ANNIVERSARY EDITION2004-2020FordF-150XL2004-2020FordF-150XLT