UMI Performance 78-88 GM G-Body 3/4in Solid Rear Sway Bar Auto-x/Road Race

If you're pushing your 1978-1988 GM G-Body hard on the autocross course or road race track, this UMI Performance 3/4-inch solid rear sway bar is built to help you get the most out of your car. The G-Body chassis can sometimes lift the inside rear tire during aggressive cornering, especially with stiffer sway bars. This particular bar is designed with a lower rate to prevent that inside tire lift, which helps keep all four tires planted and enhances the car's rotation through corners. It's a well-built piece that directly addresses a common handling issue for these cars when driven competitively.

UMI has engineered this sway bar with specific mounting solutions to minimize chassis bind. The differential housing mounts are CNC machined and feature a clamping system that works with a wide range of axle tube diameters, including 2.75, 3, and 3.25 inches. This means it should clear factory rears and many popular aftermarket options like Moser, Strange, and Currie. The chassis mounts are double shear and require drilling into the crossmember, but UMI includes a template and instructions to make it straightforward. You can choose to bolt these mounts on, or weld them for extra security. The bar itself is made from strong 4140 CrMo steel and is CNC bent for precise geometry. It also features a 1-inch billet steel hex adjuster for fine-tuning the stiffness, offering three distinct rates: 346 lb/in, 262 lb/in, and 205 lb/in. You can select the setting that best suits your driving style and the track conditions, with the shortest hole providing the most rotation.

This kit comes with greaseable polyurethane bushings for smooth operation and a durable powder coat finish. UMI also includes heavy-duty, zinc-plated U-bolts for secure axle mounting. While the chassis mounts require drilling, the rest of the installation is designed to be a bolt-in process, making it accessible for a dedicated DIYer. This bar is a solid option for anyone looking to improve their G-Body's handling performance in demanding driving situations.