Upgrade Your Chevelle, GTO, Skylark, or Cutlass With Our A Body Rear Upper Control Arms

If you're driving a GM A body, like a Chevelle, GTO, Cutlass, or Skylark, you know the factory triangulated four link rear suspension can be a weak point, especially in performance applications. The stock stamped steel upper control arms are prone to flex and bind under load, limiting traction and stability when you need it most. That’s where our GP-S Series rear upper control arms step in, delivering stronger construction, improved suspension geometry, and better axle control for spirited street driving and occasional track days.

Street Ready Geometry, Confident Control

Our A body rear upper control arms are engineered from strong yet lightweight 1.25" x .188" DOM steel tubing, precision welded for strength and consistency. Each arm comes equipped with premium Energy Suspension™ polyurethane bushings to minimize unwanted deflection while preserving ride comfort and reducing noise and vibration. This setup ensures predictable handling, better power transfer, and long term durability without the need for constant maintenance.

Part of Our GP-S Series, Tuned for the Street, Capable on Track

These rear upper control arms belong to our GP-S Series, a product line developed specifically for pro touring muscle cars that need high performance without sacrificing everyday drivability. From weekend canyon carving to the occasional autocross, GP-S Series components are the perfect balance of refinement, strength, and responsiveness.

Unlock the Full Potential of Your Rear Suspension

Maximize your A body’s handling and street performance by pairing these upper control arms with complementary GP-S and GT Series components:

• Tubular Lower Control Arms – Reduce deflection and improve traction under acceleration

• Chassis Mounted Anti Roll Bar – Eliminate bind and dramatically improve cornering performance

• Coilover Conversion Kit – Dial in ride height and damping for a custom tuned street or track setup

All of our products are expertly crafted and precision manufactured to order. Please allow 1 to 2 weeks for production and shipping.