# UMI Performance 64-72 GM A-Body 1in Lowering Spring Front - Set

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 530 lb/in rate. The 4050F’s 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. The ride height is engineered for a 1” lowering with standard SBC, aluminum head and intake Big Block and Pontiac 400 as well as LS power (lightened cars may require spring trimming). The 4050F’s are also suitable for full weight Big Block applications when nose down rake is desired. They have a tough black powder coat finish and UMI proudly manufactures these premium quality springs in the USA.

This Part Fits:

Year

Make

Model

Submodel

1967

Buick

Gran Sport

Base

1970,1972

Buick

Skylark

350

1967-1972

Buick

Skylark

Base

1968-1972

Buick

Skylark

Custom

1967-1968

Chevrolet

Chevelle

300

1967-1969

Chevrolet

Chevelle

300 Deluxe

1970-1972

Chevrolet

Chevelle

Base

1967-1972

Chevrolet

Chevelle

Concours

1969-1972

Chevrolet

Chevelle

Concours Estate

1969-1972

Chevrolet

Chevelle

Greenbrier

1971-1972

Chevrolet

Chevelle

Heavy Chevy

1967-1972

Chevrolet

Chevelle

Malibu

1968-1972

Chevrolet

Chevelle

Nomad

1968

Chevrolet

Chevelle

Nomad Custom

1971-1972

Chevrolet

Chevelle

SS

1967-1970

Chevrolet

Chevelle

SS 396

1970

Chevrolet

Chevelle

SS 454

1967-1972

Chevrolet

El Camino

Base

1968-1972

Chevrolet

El Camino

Custom

1968-1972

Chevrolet

El Camino

SS

1970-1972

Chevrolet

Monte Carlo

Base

1967-1971

Oldsmobile

442

Base

1967-1972

Oldsmobile

Cutlass

Base

1972

Oldsmobile

Cutlass

Cruiser

1967

Oldsmobile

Cutlass

Holiday

1968,1971-1972

Oldsmobile

Cutlass

S

1967

Oldsmobile

Cutlass

Turnpike Cruiser

1967-1972

Oldsmobile

F85

Base

1967-1972

Pontiac

Grand Prix

Base

1967-1972

Pontiac

GTO

Base

1970-1971

Pontiac

GTO

The Judge

1967-1970

Pontiac

Tempest

Base

1967-1969

Pontiac

Tempest

Custom

1970

Pontiac

Tempest

GT

1967-1969

Pontiac

Tempest

Safari

## Details

- **Price:** 257.28 CAD
- **Vendor:** UMI Performance
- **Type:** Lowering Springs

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 257.28 CAD | In stock |

## Images

- Photo - Primary
- User 1
- User 2

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/umi-performance-64-72-gm-a-body-1in-lowering-spring-front-set)
> Updated: 2026-07-01