Landrum variable body coilover springs are dyno-tested and offer more travel and less weight. They are made of the highest grade of chrome silicon wire and cold wound. Each coilover spring is properly heat-treated, stress-relieved, and then powdercoated--not plated--to protect the spring from hydrogen embrittlement, a corrosive break down of the spring's surface which decreases its life. Landrum variable body coilover springs are available in a wide range of lengths and spring rates to meet your application needs.