UMI Performance Rear Spring Kit - Stock Height - Black - GM A-Body 1964-66 RS200220 Manufactured from 6061T6 billet aluminum

Manufactured from 6061T6 billet aluminum and pressure tested to over 10

Header and oil pan clearance maximized for easier maintenance and installation

Big Ford w/

Specially designed for QA1's Pro Coil Systems

0 Constant Controlled Resistance Performance

UMI Performance Rear Spring Kit - Stock Height - Black - GM A-Body 1964-66 RS200220 Manufactured from 6061T6 billet aluminumA spring is a spring right? Wrong! When UMI chose to manufacture our own line of springs we went all out. Designed in conjunction with a leading Sprint Cup chassis engineer, these springs are the best in the business. UMI's springs are designed to add modern handling and a crisp ride while maintaining the factory muscle car appearance. The rear springs are wound from 9254 CrSi premium wire and feature a linear 130 lb in rate. The linear rate provides