H&R's Super Sport Springs offer an aggressive drop, and are designed and manufactured from the ground up to hold up and provide excellent performance. The springs features a progressive rate design that gives you excellent ride quality for the daily grind, but offer up improved handling when you do get aggressive with your Mustang. These springs are made from a specialized spring steel that's then shot-peened to improve its strength and reliability. H&R's Super Sport Springs offer up to 1.6" of front drop and 1.75" of rear drop, which adds a slick look and just enough lowered height for improved performance. The springs can be used with your Mustang's stock shocks and struts, though aftermarket shocks and struts are strongly encouraged.