Looking for competition proven performance for your S550 Mustang while maintaining the ability to drive it on the street? Steeda has the springs for you! Our experience and expertise in high-performance street and racing suspension systems is second to none, and the team here at Steeda has put that to work for you. Designed for ALL street and drag racing applications, Steeda's Drag springs are perfect for the drag racer that likes to drive his car to the track. These springs help with weight transfer and planting the rear wheels for maximum traction on launch. The Steeda Drag springs lower your S550 Mustang 1.25" in the front and 0.5" in the rear while maintaining optimal rates of 150lb/in. in the front and 800lb/in. in the rear. Pair these with our Pro-Action shocks and struts as well as other Steeda suspension products to make your S550 Mustang a winner!