The UMI Performance P/N 403133 front A-arm kit replaces worn, stock stamped A-arms on 1964-1972 GM A-Body cars with high-strength tubular upper and lower control arms. The stock-geometry lower arms use polyurethane spring isolators and greaseable polyurethane bushings, with a ball joint mount angled slightly from stock to suit lowered vehicles and add wheel and tire clearance. The tubular upper arms use UMI-designed Delrin bushings and UMI-built billet chromoly cross shafts, with a relocated mounting pad that adds caster without excessive shims. Both arms are jig built, preloaded with premium ball joints, and TIG welded in critical areas. The kit works with factory springs, lowering springs, and coil-over setups such as QA1, ships fully assembled, and is made in the USA in Philipsburg, Pennsylvania.
Specifications:
- Tubular upper and lower front control arms
- Stock-geometry lower arms with polyurethane spring isolators
- Greaseable polyurethane lower bushings
- UMI-designed Delrin upper bushings
- UMI-built billet chromoly cross shafts
- Relocated upper mounting pad adds caster without excessive shims
- Preloaded premium ball joints
- Jig built and TIG welded in critical areas
- Steel construction, hardware included
- Black powder coat finish
- Coil-over compatible; works with factory or lowering springs
- Ships fully assembled
- Made in the USA
- Part number: 403133-B
Vehicle Applications:
- 1965 Buick Gran Sport
- 1966 Buick Gran Sport
- 1967 Buick Gran Sport
- 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
- 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
- 1969 Pontiac Grand Prix
- 1970 Pontiac Grand Prix
- 1971 Pontiac Grand Prix
- 1972 Pontiac Grand Prix
- 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
- 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 does the UMI 403133 front A-arm kit fit?
It fits 1964-1972 GM A-Body cars, including the Buick Skylark, Special, and Sportwagon, Chevrolet Chevelle, El Camino, and Monte Carlo, Oldsmobile 442, Cutlass, and Vista Cruiser, and Pontiac GTO, LeMans, Grand Prix, and Tempest. See the Vehicle Applications list for exact years.
What is included in the kit?
The kit includes tubular upper and lower front control arms, preloaded with premium ball joints and built with greaseable polyurethane lower bushings, UMI-designed Delrin upper bushings, and billet chromoly cross shafts. Mounting hardware is included and the arms ship fully assembled.
Will this kit work with coil-overs?
Yes. The 403133 A-arm kit is designed to work with factory springs, lowering springs, and coil-over setups such as the popular QA1 system.
Does it allow for a lowered stance and more tire clearance?
Yes. The lower arm ball joint mount is angled slightly from stock to suit lowered vehicles, and the design adds wheel and tire clearance. The upper arm mounting pad is relocated to add caster without excessive shims.
Is this kit made in the USA?
Yes. UMI Performance manufactures this A-arm kit in the USA in Philipsburg, Pennsylvania.
