The UMI Performance P/N 403534 solid front and rear sway bar kit improves handling and reduces body roll for more balanced, confident cornering on 1964-1972 GM A-Body cars. The 1.250 inch front bar is CNC bent for a precise fit and is roughly 400 percent more rigid than the factory 7/8 inch bar, while the 1 inch solid rear bar is heat treated to hold its shape over time. Both bars are formed as one piece from 4140 chromoly steel and ship with new end links, greaseable polyurethane sway bar bushings, and grade 8 mounting hardware. The kit is finished in durable bright red powder coat and is 100 percent made in the USA.
Specifications:
- Solid front and rear sway bar set
- 1.250 inch front bar, CNC bent
- 1 inch solid rear bar, heat treated
- Roughly 400 percent more rigid than factory 7/8 inch front bar
- 4140 chromoly steel, formed as one piece
- New end links included
- Greaseable polyurethane sway bar bushings
- Grade 8 mounting hardware
- Bright red powder coat finish
- Made in the USA
- Part number: 403534-R
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 403534 sway bar 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 sizes are the front and rear bars and what is included?
The kit uses a 1.250 inch front bar and a 1 inch solid rear bar, both formed from 4140 chromoly steel. It includes new end links, greaseable polyurethane sway bar bushings, and grade 8 mounting hardware.
How much does this improve handling?
The front bar is roughly 400 percent more rigid than the factory 7/8 inch bar, which reduces body roll and improves cornering balance and grip.
What is the difference between the 403534-R and 403534-B?
The 403534-R is finished in bright red powder coat and the 403534-B in gloss black powder coat. The bars, hardware, and fitment are identical, only the color differs.
Is this sway bar kit made in the USA?
Yes. UMI Performance manufactures this sway bar kit in the USA.

