Skyjacker 2.5In x 10In x 300lb Universal Coilover Coil Springs

These Skyjacker coilover coil springs start with high tensile chrome silicon wire, a strong material chosen for its ability to handle repeated stress. The springs are then put through an advanced shot peening process, where they are blasted with steel pellets at high velocity. This compresses the surface of the steel, increasing its tensile strength and making the spring more durable over time. After shot peening, each spring is preset by compressing it completely until the coils touch. This process removes any fatigue or stress, preventing sagging down the road.

The ends of these springs are closed and ground flat, creating a perpendicular surface to the spring's axis. This ensures an even distribution of spring force against the working assembly and makes installation easier. They are finished with a durable black powder coat that resists corrosion and looks sharp. Every spring is cycle tested to ensure quality, and they are made in the USA.