UMI Performance 1964-1972 GM A-Body 2" Lowering Spring Set - Front H759C04XL GM Fullsize SUV 2000-07

GM Fullsize SUV 2000-07

2004-2008 Ford F650

5/16-18 in Gauge Bolt to 5/8-18 in Thread

Fuel Fitting

UMI Performance 1964-1972 GM A-Body 2" Lowering Spring Set - Front H759C04XL GM Fullsize SUV 2000-07A 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