UMI Performance 78-88 GM G-Body 1in Tubular Rear Sway Bar Chassis Mounted Pro-Tour

If you're looking to tighten up the rear end of your 1978-1988 GM G-Body, this chassis-mounted tubular rear sway bar from UMI Performance is a serious upgrade. Unlike factory bars that can bind up, this design uses separate mounts for the chassis and the differential housing, which helps keep things moving smoothly through turns. It’s a well-built piece designed to make a noticeable difference in how your car handles, whether you're cruising, hitting the autocross course, or heading to the drag strip.

This bar is constructed from a 1-inch diameter hollow steel tube, offering a lighter weight than a solid bar while still providing excellent stiffness. UMI includes a CNC-machined clamping system that can adapt to various differential housing diameters, including 2.75-inch, 3-inch, and 3.25-inch, making it compatible with factory rears and popular aftermarket options like Moser and Strange Engineering. The chassis mounts are double-shear, meaning they attach to the crossmember at two points for added strength, and installation requires drilling with a template and instructions provided. For drag racing applications, a unique hex adjuster lets you pre-load the bar to help your car launch straight.

You get three distinct stiffness settings: the longest hole is for general street use, the middle hole is for autocross and road racing, and the shortest hole is for drag strip duty. The bar also features heavy-duty CrMo spherical rod ends with Teflon for smooth operation and a billet steel adjuster for extreme strength. It comes with greaseable polyurethane bushings and a durable powder coat finish. While installation requires drilling, it's designed as a 100% bolt-in installation for the bar itself, with options to weld the chassis mounts for extra security if desired.