RideTech 1965-66 GM B-body coilover suspension systems are specifically designed for the 1965-66 Chevy B-body cars (Impala, Bel Air, Biscayne, and Caprice). They include everything needed to provide a lowered stance with dramatically improved handling and ride quality. The rear coil springs offer the perfect lowered stance. They're engineered by RideTech and wound by Hyperco, one of finest spring manufacturers in the world. All Hyperco springs are CNC cold-wound and machined from high-tensile chrome silicon steel—the highest grade spring material available. Enjoy RideTech's passionate commitment to finding a perfect spring rate and components for your vehicle with one of their 1965-66 Chevrolet coilover suspension kits.