1968-1972 GM A-Body Upper Rear Control Arms - GP-R Series

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

If you’re driving a GM A-body, including a Chevelle, GTO, Cutlass, or Skylark, you already know the factory triangulated four-link rear suspension isn’t built for high-performance handling. But don’t worry, there’s an easy fix! Our GT Series rear upper control arms eliminate the stock suspension’s articulation issues while improving stability, traction, and responsiveness.

Built for Strength, Engineered for Performance

Our A-body rear upper control arms are designed to outperform the competition. Crafted from TIG-welded 4130 Chromoly for unbeatable strength, they’re available with:

• Polyurethane Bushings – The best choice for a street use, offering an increase in stiffness from the factory rubber bushings, but not as rigid as a rod end.
• Low-friction rod ends – Ideal for track-focused builds, maximizing articulation while minimizing deflection, friction and weight.

Precision CNC-machined spacers ensure a perfect fit, while our signature satin black finish adds a sleek, high-end look. With these arms, your A-body's rear suspension gets a serious upgrade in both performance and style.

Why We Avoid Jackscrews, And Why You Should Too

Some aftermarket companies use jackscrews in their upper control arms to make pinion angle adjustments easier. But here’s the problem:

• Jackscrews add weight and reduce strength.
• Pinion angle adjustments are rare; you’ll likely set it once and forget it unless you change ride height, transmissions, or rear ends.

That’s why we prioritize strength and weight savings over unnecessary complexity.

Part of Our GP-R Series – Race-Bred Performance for the Track
These rear lower control arms are part of our GP-R Series—engineered for uncompromising performance on the track and in competition. Built for racers and hardcore enthusiasts, the GP-R line is all about maximizing capability under extreme conditions. Whether you’re chasing lap times, dialing in your setup for time attack, or building a no-compromise pro touring machine, GP-R components deliver the strength, adjustability, and precision you need to dominate.

Complete Your A-Body Suspension Overhaul

Want to take your A-body’s rear suspension to the next level? Pair these rear upper control arms with our GT Series:

• Lower control arms – For even greater rear-end articulation & stability.
• Chassis-mounted anti-roll bar – Enhances cornering performance. 
• Coilover conversion kit – Maximizes handling and ride quality.

Upgrade your Chevelle, GTO, or  other A-body rear suspension today and experience the difference!