The UMI Performance factory height spring kit is a front and rear coil spring set for 1967-1972 GM A-Body cars, engineered to add modern handling and a crisp ride while keeping the factory muscle car stance. The front springs are wound from 5160 CrSi premium wire with a linear 530 lb/in rate, and the rear springs are wound from 9254 CrSi premium wire with a linear 130 lb/in rate. The linear rate gives consistent handling for autocross and pro-touring use while the added stiffness reduces body roll and eliminates the floating feeling common to the A-Body. Ride height is engineered to sit level with a standard small block Chevy, Pontiac 400, or aluminum head and intake big block Chevy, as well as LS power, and lightened cars may require spring trimming. The front springs also suit full weight big block builds when a quarter inch nose down rake is wanted. The springs wear a tough black powder coat finish, and UMI manufactures them in the USA.
Specifications:
- Front and rear coil spring kit
- Front springs wound from 5160 CrSi premium wire
- Front rate: linear 530 lb/in
- Rear springs wound from 9254 CrSi premium wire
- Rear rate: linear 130 lb/in
- Maintains factory ride height
- Black powder coat finish
- Made in the USA
- Part number: 4049
Vehicle Applications:
- 1970 Buick GS
- 1971 Buick GS
- 1972 Buick GS
- 1968 Buick GS 350
- 1969 Buick GS 350
- 1968 Buick GS 400
- 1969 Buick GS 400
- 1970 Buick GS 455
- 1971 Buick GS 455
- 1972 Buick GS 455
- 1967 Buick Gran Sport
- 1967 Buick Skylark
- 1968 Buick Skylark
- 1969 Buick Skylark
- 1970 Buick Skylark
- 1971 Buick Skylark
- 1972 Buick Skylark
- 1967 Buick Special
- 1968 Buick Special
- 1969 Buick Special
- 1967 Buick Sportwagon
- 1968 Buick Sportwagon
- 1969 Buick Sportwagon
- 1970 Buick Sportwagon
- 1971 Buick Sportwagon
- 1972 Buick Sportwagon
- 1967 Chevrolet Chevelle
- 1968 Chevrolet Chevelle
- 1969 Chevrolet Chevelle
- 1970 Chevrolet Chevelle
- 1971 Chevrolet Chevelle
- 1972 Chevrolet Chevelle
- 1967 Chevrolet El Camino
- 1968 Chevrolet El Camino
- 1969 Chevrolet El Camino
- 1970 Chevrolet El Camino
- 1971 Chevrolet El Camino
- 1972 Chevrolet El Camino
- 1970 Chevrolet Monte Carlo
- 1971 Chevrolet Monte Carlo
- 1972 Chevrolet Monte Carlo
- 1971 GMC Sprint
- 1972 GMC Sprint
- 1967 Oldsmobile 442
- 1968 Oldsmobile 442
- 1969 Oldsmobile 442
- 1970 Oldsmobile 442
- 1971 Oldsmobile 442
- 1967 Oldsmobile Cutlass
- 1968 Oldsmobile Cutlass
- 1969 Oldsmobile Cutlass
- 1970 Oldsmobile Cutlass
- 1971 Oldsmobile Cutlass
- 1972 Oldsmobile Cutlass
- 1967 Oldsmobile Vista Cruiser
- 1968 Oldsmobile Vista Cruiser
- 1969 Oldsmobile Vista Cruiser
- 1970 Oldsmobile Vista Cruiser
- 1971 Oldsmobile Vista Cruiser
- 1972 Oldsmobile Vista Cruiser
- 1967 Pontiac GTO
- 1968 Pontiac GTO
- 1969 Pontiac GTO
- 1970 Pontiac GTO
- 1971 Pontiac GTO
- 1972 Pontiac GTO
- 1969 Pontiac Grand Prix
- 1970 Pontiac Grand Prix
- 1971 Pontiac Grand Prix
- 1972 Pontiac Grand Prix
- 1967 Pontiac LeMans
- 1968 Pontiac LeMans
- 1969 Pontiac LeMans
- 1970 Pontiac LeMans
- 1971 Pontiac LeMans
- 1972 Pontiac LeMans
- 1967 Pontiac Tempest
- 1968 Pontiac Tempest
- 1969 Pontiac Tempest
- 1970 Pontiac Tempest
FAQ
What vehicles does the UMI 4049 spring kit fit?
It fits 1967-1972 GM A-Body cars, including the Chevrolet Chevelle, El Camino and Monte Carlo, Pontiac GTO, LeMans, Tempest and Grand Prix, Oldsmobile 442, Cutlass and Vista Cruiser, and Buick Skylark, Special and Sportwagon. See the Vehicle Applications list for the exact years by model.
What spring rates does this kit use?
The front springs use a linear 530 lb/in rate wound from 5160 CrSi premium wire, and the rear springs use a linear 130 lb/in rate wound from 9254 CrSi premium wire.
Will this kit keep my car at factory ride height?
Yes. The kit is engineered to sit level at factory height with a standard small block Chevy, Pontiac 400, aluminum head and intake big block Chevy, or LS power. Lightened cars may require spring trimming.
Is this spring kit made in the USA?
Yes. UMI Performance manufactures this spring kit in the USA.
