64-72 GM A-Body Rear Lower Control Arms

The UMI Performance 64-72 GM A-Body Rear Lower Control Arms (part 4024-B) deliver chassis-level suspension geometry control for classic muscle car restorations and performance builds. These tubular trailing arms are engineered to improve rear axle location, reduce squat under acceleration, and enhance weight transfer during cornering—critical factors for vehicles running significant power upgrades or track-duty applications.

Constructed from high-strength steel with a durable black powder coat finish, the control arms feature polyurethane bushings throughout, which provide superior compliance compared to factory rubber while resisting age-related degradation from heat, UV, and ozone exposure. The tubular design minimizes unsprung weight while maintaining rigidity needed for consistent handling. Each pair weighs 14.33 lbs and arrives fully boxed, protecting components during shipping and storage.

These lower control arms are purpose-built for 1964–1972 GM A-Body vehicles (Chevelle, Malibu, Cutlass, Skylark platforms) undergoing chassis upgrades. Owners pursuing improved ride quality, reduced chassis flex, or suspension tuning for street or strip applications will find these arms essential for modern brake, wheel, and drivetrain combinations that exceed original suspension geometry limits. Proper installation requires alignment checking to verify suspension geometry meets specification.

UMI Performance specializes in A-Body and F-Body suspension systems, and this control arm design reflects decades of application experience across street rodding and restoration communities. The polyurethane bushing choice balances NVH isolation with the geometry precision that serious builds demand.