UMI Performance 4050R 64-72 GM A-Body 78-88 G-Body 1in Lowering Spring 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. As an industry leader in the muscle car suspension industry, UMI is proud to bring you the best spring in the business. Consistent rates and only the best materials (premium Chrome Silicon wire) ensure your car sits properly for years to come. Linear spring rates (530 lb/in front, 130 lb/in rear) provides a firm yet comfortable ride and incredible handling. No more floating feeling. Suitable for Pro-Tour, Auto-x and general cruising.
Fits
1967 Buick Gran Sport Base
1967 Buick Skylark Base
1967 Chevrolet Chevelle 300
1967 Chevrolet Chevelle 300 Deluxe
1967 Chevrolet Chevelle Base
1967 Chevrolet Chevelle Concours
1967 Chevrolet Chevelle Deluxe
1967 Chevrolet Chevelle SS
1967 Chevrolet El Camino Base
1967 Chevrolet Malibu Base
1967 Oldsmobile 442 Base
1967 Oldsmobile Cutlass Base
1967 Oldsmobile Cutlass Holiday
1967 Oldsmobile Cutlass Turnpike Cruiser
1967 Oldsmobile F85 Base
1967 Pontiac Grand Prix Base
1967 Pontiac GTO Base
1967 Pontiac Tempest Base
1967 Pontiac Tempest Custom
1967 Pontiac Tempest Safari
1968 Buick Skylark Base
1968 Buick Skylark Custom
1968 Chevrolet Chevelle 300
1968 Chevrolet Chevelle 300 Deluxe
1968 Chevrolet Chevelle Base
1968 Chevrolet Chevelle Concours
1968 Chevrolet Chevelle Malibu
1968 Chevrolet Chevelle Nomad
1968 Chevrolet Chevelle SS
1968 Chevrolet El Camino Base
1968 Chevrolet El Camino Custom
1968 Chevrolet El Camino SS
1968 Oldsmobile 442 Base
1968 Oldsmobile Cutlass Base
1968 Oldsmobile Cutlass S
1968 Oldsmobile F85 Base
1968 Pontiac Grand Prix Base
1968 Pontiac GTO Base
1968 Pontiac Tempest Base
1968 Pontiac Tempest Custom
1968 Pontiac Tempest Safari
1969 Buick Skylark Base
1969 Buick Skylark Custom
1969 Chevrolet Chevelle 300 Deluxe
1969 Chevrolet Chevelle Concours
1969 Chevrolet Chevelle Concours Estate
1969 Chevrolet Chevelle Greenbrier
1969 Chevrolet Chevelle Malibu
1969 Chevrolet Chevelle Nomad
1969 Chevrolet Chevelle SS
1969 Chevrolet El Camino Base
1969 Chevrolet El Camino Custom
1969 Chevrolet El Camino SS
1969 Oldsmobile 442 Base
1969 Oldsmobile Cutlass Base
1969 Oldsmobile F85 Base
1969 Pontiac Grand Prix Base
1969 Pontiac GTO Base
1969 Pontiac Tempest Base
1969 Pontiac Tempest Custom
1969 Pontiac Tempest Safari
1970 Buick Skylark 350
1970 Buick Skylark Base
1970 Buick Skylark Custom
1970 Chevrolet Chevelle Base
1970 Chevrolet Chevelle Concours
1970 Chevrolet Chevelle Concours Estate
1970 Chevrolet Chevelle Greenbrier
1970 Chevrolet Chevelle Malibu
1970 Chevrolet Chevelle Nomad
1970 Chevrolet Chevelle SS
1970 Chevrolet Chevelle SS 454
1970 Chevrolet El Camino Base
1970 Chevrolet El Camino Custom
1970 Chevrolet El Camino SS
1970 Chevrolet Monte Carlo Base
1970 Oldsmobile 442 Base
1970 Oldsmobile Cutlass Base
1970 Oldsmobile F85 Base
1970 Pontiac Grand Prix Base
1970 Pontiac GTO Base
1970 Pontiac GTO The Judge
1970 Pontiac Tempest Base
1970 Pontiac Tempest GT
1971 Buick Skylark Base
1971 Buick Skylark Custom
1971 Chevrolet Chevelle Base
1971 Chevrolet Chevelle Concours
1971 Chevrolet Chevelle Concours Estate
1971 Chevrolet Chevelle Greenbrier
1971 Chevrolet Chevelle Heavy Chevy
1971 Chevrolet Chevelle Malibu
1971 Chevrolet Chevelle Nomad
1971 Chevrolet Chevelle SS
1971 Chevrolet El Camino Base
1971 Chevrolet El Camino Custom
1971 Chevrolet El Camino SS
1971 Chevrolet Monte Carlo Base
1971 Oldsmobile 442 Base
1971 Oldsmobile Cutlass Base
1971 Oldsmobile Cutlass S
1971 Oldsmobile F85 Base
1971 Pontiac Grand Prix Base
1971 Pontiac GTO Base
1971 Pontiac GTO The Judge
1972 Buick Skylark 350
1972 Buick Skylark Base
1972 Buick Skylark Custom
1972 Chevrolet Chevelle Base
1972 Chevrolet Chevelle Concours
1972 Chevrolet Chevelle Concours Estate
1972 Chevrolet Chevelle Greenbrier
1972 Chevrolet Chevelle Heavy Chevy
1972 Chevrolet Chevelle Malibu
1972 Chevrolet Chevelle Nomad
1972 Chevrolet Chevelle SS
1972 Chevrolet El Camino Base
1972 Chevrolet El Camino Custom
1972 Chevrolet El Camino SS
1972 Chevrolet Monte Carlo Base
1972 Oldsmobile Cutlass Base
1972 Oldsmobile Cutlass Cruiser
1972 Oldsmobile Cutlass S
1972 Oldsmobile F85 Base
1972 Pontiac Grand Prix Base
1972 Pontiac GTO Base
1978 Buick Regal Base
1978 Buick Regal Limited
1978 Buick Regal Sport
1978 Chevrolet El Camino Base
1978 Chevrolet El Camino Conquista
1978 Chevrolet El Camino SS
1978 Chevrolet Malibu Base
1978 Chevrolet Malibu Classic
1978 Chevrolet Malibu Classic Estate
1978 Chevrolet Malibu Classic Landau
1978 Chevrolet Monte Carlo Landau
1978 Chevrolet Monte Carlo Sport
1978 Oldsmobile Cutlass Vista Cruiser
1978 Pontiac Grand Prix Base
1978 Pontiac Grand Prix LJ
1978 Pontiac Grand Prix SJ
1978 Pontiac LeMans Base
1978 Pontiac LeMans Safari
1979 Buick Regal Base
1979 Buick Regal Limited
1979 Buick Regal Sport
1979 Chevrolet El Camino Base
1979 Chevrolet El Camino Royal Knight
1979 Chevrolet El Camino SS
1979 Chevrolet Malibu Base
1979 Chevrolet Malibu Classic
1979 Chevrolet Malibu Classic Estate
1979 Chevrolet Malibu Classic Landau
1979 Chevrolet Malibu Classic Sport
1979 Chevrolet Malibu Estate
1979 Chevrolet Malibu Landau
1979 Chevrolet Malibu Police
1979 Chevrolet Malibu Sport
1979 Chevrolet Monte Carlo Base
1979 Chevrolet Monte Carlo Landau
1979 Oldsmobile Cutlass Vista Cruiser
1979 Oldsmobile Cutlass Vista Cruiser Brougham
1979 Pontiac Grand Prix Base
1979 Pontiac Grand Prix LJ
1979 Pontiac Grand Prix SJ
1979 Pontiac LeMans Base
1979 Pontiac LeMans Safari
1980 Buick Regal Base
1980 Buick Regal Limited
1980 Buick Regal Sport
1980 Chevrolet El Camino Base
1980 Chevrolet El Camino Royal Knight
1980 Chevrolet El Camino SS
1980 Chevrolet Malibu Base
1980 Chevrolet Malibu Classic
1980 Chevrolet Malibu Classic Estate
1980 Chevrolet Malibu Classic Landau
1980 Chevrolet Malibu Classic Sport
1980 Chevrolet Malibu Estate
1980 Chevrolet Malibu Sport
1980 Chevrolet Monte Carlo Landau
1980 Chevrolet Monte Carlo Sport
1980 Oldsmobile Cutlass Base
1980 Oldsmobile Cutlass Brougham
1980 Oldsmobile Cutlass LS
1980 Pontiac Grand Prix Base
1980 Pontiac Grand Prix LJ
1980 Pontiac Grand Prix SJ
1980 Pontiac LeMans Base
1980 Pontiac LeMans Safari
1981 Buick Regal Base
1981 Buick Regal Limited
1981 Buick Regal Sport
1981 Chevrolet El Camino Base
1981 Chevrolet El Camino Conquista
1981 Chevrolet El Camino Royal Knight
1981 Chevrolet El Camino SS
1981 Chevrolet Malibu Base
1981 Chevrolet Malibu Classic
1981 Chevrolet Malibu Classic Landau
1981 Chevrolet Monte Carlo Base
1981 Chevrolet Monte Carlo Landau
1981 Oldsmobile Cutlass Brougham
1981 Oldsmobile Cutlass LS
1981 Pontiac Grand Prix Base
1981 Pontiac Grand Prix Brougham
1981 Pontiac Grand Prix LJ
1981 Pontiac LeMans Base
1981 Pontiac LeMans Safari
1982 Buick Regal Base
1982 Buick Regal Estate Wagon
1982 Buick Regal Limited
1982 Buick Regal Limited Turbo
1982 Buick Regal Sport
1982 Chevrolet El Camino Base
1982 Chevrolet El Camino Conquista
1982 Chevrolet El Camino SS
1982 Chevrolet Malibu Classic
1982 Chevrolet Monte Carlo Base
1982 Pontiac Grand Prix Base
1982 Pontiac Grand Prix Brougham
1982 Pontiac Grand Prix LJ
1983 Buick Regal Base
1983 Buick Regal Estate Wagon
1983 Buick Regal Limited
1983 Buick Regal T-Type
1983 Chevrolet El Camino Base
1983 Chevrolet El Camino Conquista
1983 Chevrolet El Camino SS
1983 Chevrolet Malibu Classic
1983 Chevrolet Monte Carlo Base
1983 Chevrolet Monte Carlo CL
1983 Chevrolet Monte Carlo SS
1983 Pontiac Grand Prix Base
1983 Pontiac Grand Prix Brougham
1983 Pontiac Grand Prix LJ
1984 Buick Regal Base
1984 Buick Regal Grand National
1984 Buick Regal Limited
1984 Buick Regal T-Type
1984 Chevrolet El Camino Base
1984 Chevrolet El Camino Conquista
1984 Chevrolet El Camino SS
1984 Chevrolet Monte Carlo Base
1984 Chevrolet Monte Carlo SS
1984 Pontiac Grand Prix Base
1984 Pontiac Grand Prix Brougham
1984 Pontiac Grand Prix LE
1985 Buick Regal Base
1985 Buick Regal Grand National
1985 Buick Regal Limited
1985 Buick Regal T-Type
1985 Chevrolet El Camino Base
1985 Chevrolet El Camino Conquista
1985 Chevrolet El Camino SS
1985 Chevrolet Monte Carlo Base
1985 Chevrolet Monte Carlo SS
1985 Pontiac Grand Prix Base
1985 Pontiac Grand Prix Brougham
1985 Pontiac Grand Prix LE
1986 Buick Regal Base
1986 Buick Regal Grand National
1986 Buick Regal Limited
1986 Buick Regal T-Type
1986 Chevrolet El Camino Base
1986 Chevrolet El Camino Conquista
1986 Chevrolet El Camino SS
1986 Chevrolet Monte Carlo Base
1986 Chevrolet Monte Carlo LS
1986 Chevrolet Monte Carlo SS
1986 Pontiac Grand Prix Base
1986 Pontiac Grand Prix Brougham
1986 Pontiac Grand Prix LE
1987 Buick Regal Base
1987 Buick Regal GNX
1987 Buick Regal Grand National
1987 Buick Regal Limited
1987 Chevrolet El Camino Base
1987 Chevrolet El Camino SS
1987 Chevrolet Monte Carlo Base
1987 Chevrolet Monte Carlo LS
1987 Chevrolet Monte Carlo SS
1987 Pontiac Grand Prix Base
1987 Pontiac Grand Prix Brougham
1987 Pontiac Grand Prix LE
1988 Buick Regal Custom
1988 Buick Regal Limited
1988 Chevrolet Monte Carlo Base
1988 Chevrolet Monte Carlo LS
1988 Chevrolet Monte Carlo SS
1988 Pontiac Grand Prix Base
1988 Pontiac Grand Prix LE
1988 Pontiac Grand Prix SE

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