Hotchkis 78-87 Chevy El Camino / 78-88 Pontiac Grand Prix Double Adjustable Upper Trailing Arms

If you're looking to get the most out of your high-horsepower GM A/G Body muscle car, like a Grand National, Monte Carlo, or El Camino, these double adjustable upper trailing arms from Hotchkis are a solid choice. They're designed to help you fine-tune your rear suspension for better traction and handling, especially when you're putting down serious power. The main job here is to let you adjust the pinion angle of your rear end, which can make a big difference in reducing vibrations and preventing wheel hop.

What sets these apart is the double adjustable design, meaning you can make precise adjustments right on the car. The center sections are made from strong, lightweight 1.5-inch billet aluminum, and the whole assembly is TIG-welded from heavy-duty steel for long-lasting durability. Hotchkis also uses their exclusive Swivel-Max bushings. These are designed to allow for non-binding articulation as your suspension moves, which helps improve traction and overall rear suspension efficiency without unwanted flex. They're also easy to lubricate, keeping them working smoothly for a long time. The arms come finished in a durable black powder coat, and they include polyurethane rear end housing bushings to get you started.

Getting these installed is pretty straightforward, as they're designed to bolt right in. For easier bushing installation, Hotchkis does offer a specific tool, but it's not required. With these arms, you'll be able to dial in your pinion angle for improved grip and a more stable feel, whether you're on the street or the track.