UMI Performance 64-66 GM A-Body 1in Lowering Spring Set Rear

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. These springs are wound from 9254 CrSi premium wire and feature a linear 130 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/cruising. They have a tough black powder coat finish and UMI proudly manufactures these premium quality springs in the USA.

Upgrade the rear suspension of your classic GM A-Body with the UMI Performance 4052R lowering spring set. Designed for improved handling in Auto-X, Pro-Touring, corner-carving, and spirited cruising applications, these premium springs help reduce body roll and minimize the floating sensation commonly associated with A-Body vehicles. The approximately 1-inch lowering design also provides a more purposeful stance while supporting responsive suspension performance.
UMI Performance developed these springs in conjunction with a leading Sprint Cup chassis engineer, using premium 9254 chrome silicon wire for strength, durability, and consistent performance. Each spring features a linear 130 lb/in spring rate, delivering predictable handling characteristics through turns and transitions. The linear rate is especially beneficial for drivers seeking stable, repeatable suspension response during performance driving.
Finished with a durable black powder coat, the UMI Performance 4052R springs are built for long-lasting service and are proudly manufactured in the USA. This rear spring set is designed for select 1964-1966 Buick Special, Pontiac LeMans, and 1966 Pontiac GTO applications. Verify vehicle configuration and suspension requirements before installation. Professional installation and a complete alignment are recommended after lowering the vehicle.

Features:

• Brand: UMI Performance

• Part Number: 4052R

• Application: Rear suspension for select 1964-1966 GM A-Body vehicles

• Lowering: Approximately 1 inch

• Spring Rate: Linear 130 lb/in

• Material: Premium 9254 chrome silicon wire

• Finish: Durable black powder coat

• Use: Suitable for Auto-X, Pro-Touring, corner carving, and cruising

• Manufacturing: Proudly made in the USA

Fitment:
Buick Skylark Base 1964
Buick Skylark Base 1965
Buick Skylark Base 1966
Buick Special Base 1964
Buick Special Base 1965
Buick Special Base 1966
Buick Special Deluxe 1964
Buick Special Deluxe 1965
Buick Special Deluxe 1966
Chevrolet Chevelle Base 1964
Chevrolet Chevelle Base 1965
Chevrolet Chevelle Base 1966
Chevrolet Chevelle Deluxe 1965
Chevrolet Chevelle Deluxe 1966
Chevrolet Chevelle SS 1964
Chevrolet Chevelle SS 1965
Chevrolet Chevelle SS 1966
Chevrolet El Camino Base 1964
Chevrolet El Camino Base 1965
Chevrolet El Camino Base 1966
Chevrolet Malibu Base 1964
Chevrolet Malibu Base 1965
Chevrolet Malibu Base 1966
Oldsmobile 442 Base 1964
Oldsmobile 442 Base 1965
Oldsmobile 442 Base 1966
Oldsmobile Cutlass Base 1964
Oldsmobile Cutlass Base 1965
Oldsmobile Cutlass Base 1966
Oldsmobile Cutlass Holiday 1964
Oldsmobile Cutlass Holiday 1965
Oldsmobile Cutlass Holiday 1966
Oldsmobile F85 Base 1964
Oldsmobile F85 Base 1965
Oldsmobile F85 Base 1966
Oldsmobile F85 Deluxe 1964
Oldsmobile F85 Deluxe 1965
Oldsmobile F85 Deluxe 1966
Oldsmobile F85 Holiday 1966
Pontiac GTO Base 1964
Pontiac GTO Base 1965
Pontiac GTO Base 1966
Pontiac LeMans Base 1964
Pontiac LeMans Base 1965
Pontiac LeMans Base 1966