# UMI Performance 64-66 GM A-Body Spring Kit 2in Lowering 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 front springs are wound from 5160 CrSi premium wire and feature a linear 530 lb/in rate. 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/cruising. The ride height is engineered for a 2” lowering 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. 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 300 1965-1966 Chevrolet Chevelle 300 Deluxe 1964-1966 Chevrolet Chevelle Malibu 1964-1965 Chevrolet Chevelle Malibu Super Sport 1966 Chevrolet Chevelle Super Sport 396 1964-1966 Chevrolet El Camino 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 ## Details - **Price:** 467.69 CAD - **Vendor:** UMI Performance - **Type:** Lowering Springs ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 467.69 CAD | In stock | ## Images - Photo - Primary --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/umi-performance-64-66-gm-a-body-spring-kit-2in-lowering) > Updated: 2026-07-01