UMI Performance 1967-1988 GM A/G-Body 2" Lowering Spring Set - Rear BR10051 These are for racing fuel

These are for racing fuel pumps to regulator kits

developed for racers in closed-car environments

1/4 in Square Ratchet Drive

Promotes proper seating of parts

Forgestar 1-piece F173 series wheel in 18 in diameter

UMI Performance 1967-1988 GM A/G-Body 2" Lowering Spring Set - Rear BR10051 These are for racing fuelA 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. Our front springs are wound from 5160 CrSi premium wire and feature a linear 530 lb in rate. The rear springs are wound from 9254 CrSi premium wire and feature a linear 130 lb in rate. The linear rate provides consistent handling