The StreetGrip kit arrives as a comprehensive, all-in-one solution featuring Dual-Rate Coil Springs and Composite Leaf Springs that work in tandem to provide a crisp, modern ride height and superior handling. At the heart of the system are the HQ Series Adjustable Shocks, which carry a 1,000,000-mile warranty and allow you to fine-tune your rebound settings with a simple turn of a knob. To ensure surgical steering precision, the kit includes Delrin Control Arm Bushings and Tall Ball Joints to optimize suspension geometry and eliminate the “deflection” common in rubber bushings. Finally, a large-diameter front sway bar is included to virtually eliminate body roll, keeping your Mustang flat and composed through every apex.