UMI Performance 78-88 GM G-Body 1-3/8in Tubular Rear Drag Sway Bar Bolt-on

This 1-3/8” diameter tubular steel sway bar from UMI Performance is built to help your GM G-Body launch hard and stay straight. It’s designed to reduce body roll and keep your rear end planted, whether you're hitting the drag strip or just want improved handling on the street. This bar is a popular choice for owners of vehicles like the Chevrolet Monte Carlo, Buick Regal, and Oldsmobile Cutlass Supreme looking to put down serious power.

The bar itself is constructed from lightweight tubular steel, saving 8-10 lbs over some competing bars without sacrificing roll resistance. UMI includes a CNC machined clamping system that adapts to a range of axle tube diameters, including factory OEM 7.5, GN 8.5, 12-bolt, 9”, M9, S60, and others, with diameters from 2.75” to 3.25”. You'll need to verify your specific rear end's axle tube diameter before ordering, as some aftermarket rears may vary. The kit features heavy-duty machined aluminum sway bar mounts with greaseable polyurethane bushings and ultra-premium CrMo spherical rod ends with Teflon races for smooth operation and durability. A 1” billet steel hex adjuster allows for on-car pre-loading, letting you fine-tune your launch characteristics to ensure your car leaves the line straight, no matter how much power you're making.

Installation is designed to be a bolt-in process, though UMI recommends welding the double shear chassis mounts for added security, especially for drag applications. Drilling through the crossmember is required, and a template and instructions are included to guide you. The kit comes with high-strength 4140 CrMo zinc-plated u-bolts that can be switched out by changing u-bolt sizes if you swap rear ends. This sway bar is available in a durable red or black powder coat finish and is manufactured with pride in Philipsburg, PA, USA.