The UMI Performance boxed rear lower control arms are a direct replacement pair for 1964-1972 GM A-Body cars, built from tubular steel with a boxed design for added strength and rigidity over the weak, flex-prone factory arms. The stiffer arms help reduce wheel hop and keep the rear axle located for more consistent launches and cornering, and the polyurethane bushings provide a firmer, longer lasting connection than factory rubber. They are finished in durable black powder coat and sold as a pair. UMI manufactures these control arms in the USA.
Specifications:
- Rear lower control arms
- Tubular steel, boxed construction
- Polyurethane bushings
- Black powder coat finish
- Sold as a pair
- Made in the USA
- Part number: 4024-B
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
- 1965 Buick Gran Sport
- 1966 Buick Gran Sport
- 1967 Buick Gran Sport
- 1964 Buick Skylark
- 1965 Buick Skylark
- 1966 Buick Skylark
- 1967 Buick Skylark
- 1968 Buick Skylark
- 1969 Buick Skylark
- 1970 Buick Skylark
- 1971 Buick Skylark
- 1972 Buick Skylark
- 1964 Buick Special
- 1965 Buick Special
- 1966 Buick Special
- 1967 Buick Special
- 1968 Buick Special
- 1969 Buick Special
- 1964 Buick Sportwagon
- 1965 Buick Sportwagon
- 1966 Buick Sportwagon
- 1967 Buick Sportwagon
- 1968 Buick Sportwagon
- 1969 Buick Sportwagon
- 1970 Buick Sportwagon
- 1971 Buick Sportwagon
- 1972 Buick Sportwagon
- 1964 Chevrolet Chevelle
- 1965 Chevrolet Chevelle
- 1966 Chevrolet Chevelle
- 1967 Chevrolet Chevelle
- 1968 Chevrolet Chevelle
- 1969 Chevrolet Chevelle
- 1970 Chevrolet Chevelle
- 1971 Chevrolet Chevelle
- 1972 Chevrolet Chevelle
- 1964 Chevrolet El Camino
- 1965 Chevrolet El Camino
- 1966 Chevrolet El Camino
- 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
- 1964 Oldsmobile 442
- 1965 Oldsmobile 442
- 1966 Oldsmobile 442
- 1967 Oldsmobile 442
- 1968 Oldsmobile 442
- 1969 Oldsmobile 442
- 1970 Oldsmobile 442
- 1971 Oldsmobile 442
- 1964 Oldsmobile Cutlass
- 1965 Oldsmobile Cutlass
- 1966 Oldsmobile Cutlass
- 1967 Oldsmobile Cutlass
- 1968 Oldsmobile Cutlass
- 1969 Oldsmobile Cutlass
- 1970 Oldsmobile Cutlass
- 1971 Oldsmobile Cutlass
- 1972 Oldsmobile Cutlass
- 1964 Oldsmobile Vista Cruiser
- 1965 Oldsmobile Vista Cruiser
- 1966 Oldsmobile Vista Cruiser
- 1967 Oldsmobile Vista Cruiser
- 1968 Oldsmobile Vista Cruiser
- 1969 Oldsmobile Vista Cruiser
- 1970 Oldsmobile Vista Cruiser
- 1971 Oldsmobile Vista Cruiser
- 1972 Oldsmobile Vista Cruiser
- 1964 Pontiac GTO
- 1965 Pontiac GTO
- 1966 Pontiac GTO
- 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
- 1964 Pontiac LeMans
- 1965 Pontiac LeMans
- 1966 Pontiac LeMans
- 1967 Pontiac LeMans
- 1968 Pontiac LeMans
- 1969 Pontiac LeMans
- 1970 Pontiac LeMans
- 1971 Pontiac LeMans
- 1972 Pontiac LeMans
- 1964 Pontiac Tempest
- 1965 Pontiac Tempest
- 1966 Pontiac Tempest
- 1967 Pontiac Tempest
- 1968 Pontiac Tempest
- 1969 Pontiac Tempest
- 1970 Pontiac Tempest
FAQ
What vehicles do the UMI 4024 rear lower control arms fit?
They fit 1964-1972 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 does the boxed design do?
The boxed tubular construction adds strength and rigidity over the factory arms, which helps reduce wheel hop and keeps the rear axle located for more consistent launches and cornering.
What type of bushings do they use?
They use polyurethane bushings, which provide a firmer and longer lasting connection than factory rubber bushings.
Are these control arms made in the USA?
Yes. UMI Performance manufactures these control arms in the USA.

