UMI 3050F 78-88 G-Body 1 Inch, 70-81 F-Body 2.5 Inch Lowering

A 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 springs are wound from 5160 CrSi premium wire and feature a linear 600 lb/in rate. UMI’s front springs are stiffer than stock to provide increased performance with decreased body roll and a lower center of gravity. These springs are suitable for Auto-x and Pro-Tour applications as well as corner carving/cruising.

1978-1988 G-Body

The ride height is engineered for a 1” lowering with standard SBC as well as LS power (lightened cars may require spring trimming). The front springs are also suitable for full weight Big Block applications when ¼” nose down rake is desired.

1970-1981 F-Body

The ride height is engineered for a 2-1/2” lowering with standard SBC as well as LS power (lightened cars may require spring trimming). The front springs are also suitable for full weight Big Block applications when ¼” nose down rake is desired.

They have a tough black powder coat finish and UMI proudly manufactures these premium quality springs in the USA.

Consistent rates and only the best materials (premium Chrome Silicon wire) ensure your cars sits properly for years to come.

Linear spring rates (600 lb/in front, 130 lb/in rear) provides a firm yet comfortable ride and incredible handling.

No more floating feeling.

Suitable for Pro-Tour, Auto-x and general cruising.

Manufactured in the USA

Installation Instructions (PDF)