With the introduction of IRS on the S550 Mustang we have already seen an improvement in handling, but take it a step further with Shocks and Struts for your 2015-2023 Mustang. AmericanMuscle has your Shock and Strut needs covered with a wide-selection of high-quality parts that are made just for your ride. Not only will you have a much smoother ride, but also a better handling one. 2015-2023 Mustang Lowering Springs and Panhard Bars really compliment this mod well by finishing off many of the handling needs of the S550.