Fits 2007-2014 Mustang Shelby GT500 Coupe Gives a more aggressive-looking stance, as well as increased handling dynamics Validated for use with electronically controlled Track Pack option (2013-2014 model year) Lowers 2007-2012 approximately 1.25" Lowers 2013-2014 approximately .400" front, 1.00" rear May cause slightly harsher ride compared to stock springs Recommended for use with M-18000-C damper kit and M-5490-B sway bar kit (except 2013-2014 Track Pack) Mustang Jounce Bumper Kit M-5570-A recommended with installation of springs (Original equipment on 2012-2014, recommended for 2007-2011) M-18183-C Strut Mounts recommended (Original equipment on 2012-2014, recommended for 2007-2011) Note: Some factory fasteners are one time use. Please reference a Ford service manual for reuse information and correct torque specifications. Requires alignment after installation