What is the spring rate for these rear lowering springs?

These UMI Performance rear lowering springs have a linear spring rate of 130 lb/in. This rate is designed to provide consistent handling and reduce body roll compared to stock springs.

What is the benefit of a linear spring rate?

A linear spring rate means the spring's resistance increases at a constant rate as it's compressed. This provides predictable handling characteristics, which is beneficial for both spirited driving and applications like auto-cross.

Do these springs come with any hardware or other components?

This product is for the rear lowering springs only. Installation will require reusing your vehicle's original spring mounting hardware, and it's recommended to consult your vehicle's service manual for proper installation procedures.

UMI Performance 64-72 GM A-Body 78-88 G-Body 1in Lowering Spring Rear

Specifications

Brand: UMI Performance
Part #: 4050R
UPC: 4050R

UMI Performance 64-72 GM A-Body 78-88 G-Body 1in Lowering Spring Rear

Name: UMI Performance 64-72 GM A-Body 78-88 G-Body 1in Lowering Spring Rear
Brand: UMI Performance
Price: 206.71 USD
Availability: InStock

$206.71

Only 3 left in stock

UMI Performance 1" rear lowering springs for 1964-1988 GM A/G-Body. Lowers vehicle for improved stance and handling.

Key Features

Fits 1964-1972 GM A-Body and 1978-1988 GM G-Body vehicles.
Lowers vehicle ride height by approximately 1 inch.
Features a linear 130 lb/in spring rate for consistent handling.
Constructed from 9254 CrSi wire for durability and consistent ride height.
Helps reduce body roll and eliminate a "floating" feeling.
Finished with a tough black powder coat for corrosion resistance.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Product Details

If you're looking to give your classic GM A-body or G-body a lower stance and more responsive feel, these rear lowering springs from UMI Performance are a solid option. Designed to lower your vehicle by about 1 inch, they help reduce body roll and eliminate that common "floating" sensation, making your car feel more planted on the road. This is especially noticeable when you're cornering or driving more aggressively.

These aren't just any springs; UMI wound them from 9254 CrSi wire, a strong material that holds its shape over time, ensuring your car sits at the desired height for years. They feature a linear 130 lb/in rate, which provides consistent handling characteristics that are beneficial for spirited driving, auto-cross, or just carving up some back roads. The tough black powder coat finish not only looks good but also helps protect the springs from the elements. UMI proudly makes these springs in the USA.

These springs are designed to fit a range of popular GM vehicles from the mid-60s through the late-80s, including models like the Chevrolet Chevelle, Pontiac GTO, and Buick Skylark. They are a great way to improve your car's handling and appearance without a drastic change to ride comfort.