UMI Performance 64-66 GM A-Body Factory Height Springs Rear

SKU: UMI4048R
No reviews

A spring is a spring right? Wrong! When UMI chose ...Read More

Price:
Sale price$189.99
Add To Cart
×

Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit
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. The rear 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 and general cruising. They have a tough, black powder coat finish and UMI proudly manufactures these premium quality springs in the USA.
Installation Instructions


This Part Fits:

Year Make Model Submodel
1964-1966 Buick Skylark Base
1964-1966 Buick Special Base
1964-1966 Buick Special Deluxe
1964-1966 Chevrolet Chevelle Base
1965-1966 Chevrolet Chevelle Deluxe
1964-1966 Chevrolet Chevelle SS
1964-1966 Chevrolet El Camino Base
1964-1966 Chevrolet Malibu Base
1964-1966 Oldsmobile 442 Base
1964-1966 Oldsmobile Cutlass Base
1964-1966 Oldsmobile Cutlass Holiday
1964-1966 Oldsmobile F85 Base
1964-1966 Oldsmobile F85 Deluxe
1966 Oldsmobile F85 Holiday
1964-1966 Pontiac GTO Base
1964-1966 Pontiac LeMans Base

Product Details

Product Description
Part Numbers
Sizing & Fit
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. The rear 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 and general cruising. They have a tough, black powder coat finish and UMI proudly manufactures these premium quality springs in the USA.
Installation Instructions


This Part Fits:

Year Make Model Submodel
1964-1966 Buick Skylark Base
1964-1966 Buick Special Base
1964-1966 Buick Special Deluxe
1964-1966 Chevrolet Chevelle Base
1965-1966 Chevrolet Chevelle Deluxe
1964-1966 Chevrolet Chevelle SS
1964-1966 Chevrolet El Camino Base
1964-1966 Chevrolet Malibu Base
1964-1966 Oldsmobile 442 Base
1964-1966 Oldsmobile Cutlass Base
1964-1966 Oldsmobile Cutlass Holiday
1964-1966 Oldsmobile F85 Base
1964-1966 Oldsmobile F85 Deluxe
1966 Oldsmobile F85 Holiday
1964-1966 Pontiac GTO Base
1964-1966 Pontiac LeMans Base

Product Details

Product Description
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. The rear 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 and general cruising. They have a tough, black powder coat finish and UMI proudly manufactures these premium quality springs in the USA.
Installation Instructions


This Part Fits:

Year Make Model Submodel
1964-1966 Buick Skylark Base
1964-1966 Buick Special Base
1964-1966 Buick Special Deluxe
1964-1966 Chevrolet Chevelle Base
1965-1966 Chevrolet Chevelle Deluxe
1964-1966 Chevrolet Chevelle SS
1964-1966 Chevrolet El Camino Base
1964-1966 Chevrolet Malibu Base
1964-1966 Oldsmobile 442 Base
1964-1966 Oldsmobile Cutlass Base
1964-1966 Oldsmobile Cutlass Holiday
1964-1966 Oldsmobile F85 Base
1964-1966 Oldsmobile F85 Deluxe
1966 Oldsmobile F85 Holiday
1964-1966 Pontiac GTO Base
1964-1966 Pontiac LeMans Base

DRIVERS Also Bought

Recently viewed