The UMI Performance rear control arm frame braces reinforce the upper and lower rear control arm mounts on GM A-Body vehicles. As power increases, the factory rear control arm mounts are prone to bending or breaking, and these tubular braces tie the upper and lower mounts together for added strength and improved driving performance. Manufactured from DOM steel and TIG welded, they are adjustable for a precise fit and bolt on using the included longer Grade 8 hardware, nuts and washers. They are made in the USA and finished in a durable black powder coat. Sold as a pair.
Specifications:
- DOM steel construction
- Fully TIG welded
- Adjustable for a precise fit
- Ties upper and lower rear control arm mounts together
- Includes longer Grade 8 hardware, nuts and washers
- Durable black powder coat finish
- Bolt-on installation
- Sold as a pair
- Made in the USA
- Part number: 4029-B
Vehicle Applications:
- 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
- 1964 Buick Sportwagon
- 1965 Buick Sportwagon
- 1966 Buick Sportwagon
- 1967 Buick Sportwagon
- 1964 Chevrolet Chevelle
- 1965 Chevrolet Chevelle
- 1966 Chevrolet Chevelle
- 1967 Chevrolet Chevelle
- 1964 Chevrolet El Camino
- 1965 Chevrolet El Camino
- 1966 Chevrolet El Camino
- 1967 Chevrolet El Camino
- 1964 Oldsmobile 442
- 1965 Oldsmobile 442
- 1966 Oldsmobile 442
- 1967 Oldsmobile 442
- 1964 Oldsmobile Cutlass
- 1965 Oldsmobile Cutlass
- 1966 Oldsmobile Cutlass
- 1967 Oldsmobile Cutlass
- 1964 Oldsmobile Vista Cruiser
- 1965 Oldsmobile Vista Cruiser
- 1966 Oldsmobile Vista Cruiser
- 1967 Oldsmobile Vista Cruiser
- 1964 Pontiac GTO
- 1965 Pontiac GTO
- 1966 Pontiac GTO
- 1967 Pontiac GTO
- 1964 Pontiac Grand Prix
- 1965 Pontiac Grand Prix
- 1966 Pontiac Grand Prix
- 1967 Pontiac Grand Prix
- 1964 Pontiac LeMans
- 1965 Pontiac LeMans
- 1966 Pontiac LeMans
- 1967 Pontiac LeMans
- 1964 Pontiac Tempest
- 1965 Pontiac Tempest
- 1966 Pontiac Tempest
- 1967 Pontiac Tempest
FAQ
What vehicles do these frame braces fit?
Per the UMI fitment data they cover GM A-Body models including the Chevrolet Chevelle and El Camino, Pontiac GTO, LeMans and Tempest, Oldsmobile Cutlass, 442 and Vista Cruiser, and Buick Skylark, Special and Sportwagon. See the Vehicle Applications list for the exact years by model.
What do these braces do?
They tie the upper and lower rear control arm mounts together to reinforce the frame, reducing the chance of the mounts bending or breaking under higher power.
Do they require cutting or modifying the floor?
No. They bolt on and are adjustable for a precise fit, and the included longer Grade 8 hardware is used for installation.
Are these frame braces made in the USA?
Yes. UMI Performance manufactures these frame braces in the USA.

