UMI Performance manufactures this rear spring line in-house, developed in conjunction with a leading Sprint Cup chassis engineer. The 4051R rear springs are wound from 9254 chrome silicon premium wire and carry a linear 130 lb/in rate. The linear rate delivers consistent handling for Auto-x and Pro-Touring use, while the added stiffness reduces body roll and eliminates the floating feeling common to the A-body and G-body platforms. They give a 2 inch rear drop and suit Auto-x, Pro-Touring, corner carving, and cruising. They carry a durable black powder coat finish and are made in the USA.
Specifications:
- Position: Rear
- Lowering: 2 inch drop
- Spring rate: 130 lb/in linear
- Wire: 9254 chrome silicon
- Material: Steel
- Finish: Black powder coat
- Sold as: Pair
- Made in the USA
- Part number: 4051R
Vehicle Applications:
- 1967 Buick Gran Sport
- 1978 Buick Regal
- 1979 Buick Regal
- 1980 Buick Regal
- 1981 Buick Regal
- 1982 Buick Regal
- 1983 Buick Regal
- 1984 Buick Regal
- 1985 Buick Regal
- 1986 Buick Regal
- 1987 Buick Regal
- 1988 Buick Regal
- 1967 Buick Skylark
- 1968 Buick Skylark
- 1969 Buick Skylark
- 1970 Buick Skylark
- 1971 Buick Skylark
- 1972 Buick Skylark
- 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
- 1978 Chevrolet El Camino
- 1979 Chevrolet El Camino
- 1980 Chevrolet El Camino
- 1981 Chevrolet El Camino
- 1982 Chevrolet El Camino
- 1983 Chevrolet El Camino
- 1984 Chevrolet El Camino
- 1985 Chevrolet El Camino
- 1986 Chevrolet El Camino
- 1987 Chevrolet El Camino
- 1978 Chevrolet Malibu
- 1979 Chevrolet Malibu
- 1980 Chevrolet Malibu
- 1981 Chevrolet Malibu
- 1982 Chevrolet Malibu
- 1983 Chevrolet Malibu
- 1970 Chevrolet Monte Carlo
- 1971 Chevrolet Monte Carlo
- 1972 Chevrolet Monte Carlo
- 1978 Chevrolet Monte Carlo
- 1979 Chevrolet Monte Carlo
- 1980 Chevrolet Monte Carlo
- 1981 Chevrolet Monte Carlo
- 1982 Chevrolet Monte Carlo
- 1983 Chevrolet Monte Carlo
- 1984 Chevrolet Monte Carlo
- 1985 Chevrolet Monte Carlo
- 1986 Chevrolet Monte Carlo
- 1987 Chevrolet Monte Carlo
- 1988 Chevrolet Monte Carlo
- 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
- 1978 Oldsmobile Cutlass
- 1979 Oldsmobile Cutlass
- 1980 Oldsmobile Cutlass
- 1981 Oldsmobile Cutlass
- 1967 Oldsmobile F85
- 1968 Oldsmobile F85
- 1969 Oldsmobile F85
- 1970 Oldsmobile F85
- 1971 Oldsmobile F85
- 1972 Oldsmobile F85
- 1967 Pontiac GTO
- 1968 Pontiac GTO
- 1969 Pontiac GTO
- 1970 Pontiac GTO
- 1971 Pontiac GTO
- 1972 Pontiac GTO
- 1967 Pontiac Grand Prix
- 1968 Pontiac Grand Prix
- 1969 Pontiac Grand Prix
- 1970 Pontiac Grand Prix
- 1971 Pontiac Grand Prix
- 1972 Pontiac Grand Prix
- 1978 Pontiac Grand Prix
- 1979 Pontiac Grand Prix
- 1980 Pontiac Grand Prix
- 1981 Pontiac Grand Prix
- 1982 Pontiac Grand Prix
- 1983 Pontiac Grand Prix
- 1984 Pontiac Grand Prix
- 1985 Pontiac Grand Prix
- 1986 Pontiac Grand Prix
- 1987 Pontiac Grand Prix
- 1988 Pontiac Grand Prix
- 1978 Pontiac LeMans
- 1979 Pontiac LeMans
- 1980 Pontiac LeMans
- 1981 Pontiac LeMans
- 1967 Pontiac Tempest
- 1968 Pontiac Tempest
- 1969 Pontiac Tempest
- 1970 Pontiac Tempest
FAQ
What vehicles do these rear springs fit?
The 4051R rear springs fit 1967 to 1972 GM A-Body and 1978 to 1988 GM G-Body models, including the Chevrolet Chevelle, El Camino, Malibu and Monte Carlo, Buick Skylark, Gran Sport and Regal, Oldsmobile Cutlass, 442 and F85, and Pontiac GTO, Grand Prix, LeMans and Tempest. See the Vehicle Applications list for the full year by model breakdown.
How much do these springs lower the rear of the car?
These rear springs are engineered for a 2 inch drop and are designed to pair with UMI 2 inch front springs for a balanced stance.
Are these sold as a pair?
Yes. The 4051R is sold as a pair of rear springs. Front springs are offered separately.
What is the spring rate and material?
The rear springs use a linear 130 lb/in rate and are wound from 9254 chrome silicon premium wire with a black powder coat finish.
