Genesis Technologies Coil Over Spring Spacers Now Available for 60mm ID Springs! Made from Aircraft Grade 6061-T6 Aluminum, the Coil Over Spring Spacers are designed for the use of shorter springs onto a longer shock, therefore reducing the overall unsprung corner weight. The spring spacers also move the spring load on the spring retainer away from the center of the shock body to reduce body deflection. The Coil Over Spring Spacers are stackable to varying lengths. Spring Spacers are available for the 2.25", 2.50" and 60mm springs in both the 1" and 2" heights.