64-72 GM A-Body Rear Sway Bar

The 64-72 GM A-Body rear sway bar from UMI Performance is engineered for enthusiasts seeking to eliminate chassis roll and improve handling on classic Chevelle, Cutlass, and GTO platforms. This chromoly construction rear stabilizer addresses a critical gap in first-generation A-Body suspension geometry, where factory designs prioritized ride comfort over cornering control. Whether you're building a street performer or preparing for road course duty, this sway bar kit transforms how your classic responds through corners by reducing load transfer and keeping the chassis planted during aggressive driving.

Built from chromoly steel and finished in durable red powder coat, the 1-inch diameter bar provides the optimal balance between compliance and stiffness for period-correct A-Bodies without excessive harshness. The increased diameter over OEM offerings dramatically improves anti-roll stiffness while the chromoly material ensures longevity under repeated compression cycles and temperature swings. The complete kit includes all necessary brackets and hardware for direct bolt-on installation, eliminating the need for custom fabrication or modifications to existing suspension pickup points.

Mechanics and restoration specialists routinely specify UMI Performance components for 1964-1972 A-Body applications because the engineering respects original mounting locations while delivering measurable improvements in turn-in response and mid-corner stability. Installation pairs seamlessly with coil-over conversions, disc brake upgrades, and engine modifications without interference. At 17.7 pounds, the rear sway bar adds minimal unsprung weight while effectively reducing body roll by 30-40 percent compared to factory systems—a transformative upgrade for any driver serious about vintage muscle car dynamics.