H&R Street Performance Coil Overs for the 2015 and 2016 Ford Mustang are the exact suspension parts required to meet the needs of even the most selective drivers, ranging from daily drivers to serious tuners, who can appreciate the outstanding handling and top-level ride comfort. Each coil over shock is custom valved to work along with a precision-engineered progressive rate spring, producing a finely-tuned suspension system. The fully threaded shock body gives the option of adjustable vehicle height. This feature assists in balancing vehicle weight, resulting in a lower center of gravity and enhanced performance and control.