QA1 5283 Adjustable Rear Frame Brace 1964-67 GM A-Body

Vehicle Fitment

• 1964-1967 GM A-Body (Chevrolet Chevelle/El Camino, Pontiac Tempest/Le Mans, Oldsmobile Cutlass) - rear frame brace (pair)

Features

• 1" diameter cold-rolled steel tubing construction for superior chassis rigidity
• Adjustable threaded sleeves allow preload tuning on the rear trailing arm mounts
• Reinforces upper and lower trailing arm mount points to reduce axle wrap and improve traction
• Zinc plated sleeves and powder-coat finish resist corrosion and maintain long-term durability
• Designed to clear both stock and aftermarket muffler systems for custom exhaust compatibility
• Includes full mounting hardware for bolt-in installation
• Ideal for street, show, or performance builds seeking improved rear stability and reduced chassis flex

Specifications

• Part Number: 5283
• Application: Rear trailing-arm frame braces for 1964-1967 GM A-Body
• Material: 1" cold-rolled steel tubing
• Finish: Powder-coat (tubing) + zinc-plated adjustable sleeves
• Adjustability: Threaded sleeve for preload tuning
• Package: Pair (left and right side braces & hardware)

Included Components

• 1x Left-side adjustable rear frame brace
• 1x Right-side adjustable rear frame brace
• Mounting hardware kit (bolts, washers, brackets) required for installation

Product Description

The QA1 5283 Adjustable Rear Frame Brace is a premium upgrade designed for 1964-1967 GM A-Body platforms. By reinforcing the upper and lower trailing arm mounting points, this brace system reduces chassis flex under acceleration, improves rear stability, and enhances traction. The adjustable sleeves allow fine-tuning to eliminate unwanted movement in the rear suspension mounts.

Constructed from heavy-duty 1" cold-rolled steel tubing and finished with corrosion-resistant coatings, the 5283 system is built to last. Its design accommodates both factory and aftermarket mufflers, making it versatile for street or performance applications. Installation is straightforward - bolt-in using factory mounting points with the supplied hardware - making it accessible for restorations, performance builds, or show cars seeking structural improvement.

Ideal for owners who demand better rear-end control, reduced axle wrap, and improved handling response from their A-Body chassis, the QA1 5283 delivers tangible improvements in chassis rigidity and driving feel. Always verify compatibility with your specific model year and rear suspension setup before installation.