Description

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

Product Overview

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. UMI’s springs are designed to add modern handling and a crisp ride while maintaining the factory muscle car appearance. Our front springs are wound from 5160 CrSi premium wire and feature a linear 530 lb/in rate. The linear rate provides consistent handling characteristics which are important for Auto-x and Pro-Tour applications while the increase in stiffness reduces body roll and prevents the “floating” feeling so common with the A-body. These springs are suitable for Auto-x and Pro-Tour applications as well as corner carving and general cruising. The ride height is engineered to be level with standard SBC, Pontiac 400 and aluminum head/intake Big Block Chevy 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.

Product Details

Year	Make
California Proposition 65:	WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Color:	Black
Description:	4049F - 1964-1972 GM A-Body Factory Height Springs, Front
Finish:	Black Powdercoated
Front Spring Rate Type:	Linear
Front Spring Rate:	530
Part Number:	umi4049F
Suspension Grade Type:	Performance

Kit Options

This item is available as a full kit.
Select a kit option in the following table if you are looking for this item in a bundle form with all associated components.

Kit option/s:

Thumb	SKU	Kit Title
	umiSS103049	UMI Performance 68-72 GM A-Body Lowering Kit Factory Height (2x bil24-009294, 2x bil24-009492, 1x umi4049F, 1x umi4049R)
	umiSS203048	UMI Performance 64-66 GM A-Body Spring & Shock Kit Factory Height (2x bil24-009294, 2x bil24-029728, 1x umi4048R, 1x umi4049F)
	umiSS203049	UMI Performance 1967 GM A-Body Bilstein Shock/UMI Spring Kit Factory Height (2x bil24-009294, 2x bil24-029728, 1x umi4049F, 1x umi4049R)

Data: v4.2 - Upd: 2026-09-30 16:54:09

Specifications

Year

Make

California Proposition 65:

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Color:

Black

Description:

4049F - 1964-1972 GM A-Body Factory Height Springs, Front

Finish:

Black Powdercoated

Front Spring Rate Type:

Linear

Front Spring Rate:

530

Part Number:

umi4049F

Suspension Grade Type:

Performance

Compatibility