UMI Performance 70-81 GM F-Body Front Lower A-arms Polyurethane Bushings

Starting with 1.500” USA-made DOM steel tubing, these front lower A-arms from UMI Performance are built for a range of classic GM vehicles, including models like the Chevrolet Camaro, Pontiac Firebird, and Buick Regal. They're designed to give you a much improved steering feel and better stability, especially when you're moving at higher speeds. The engineers here have relocated the lower ball joint to add 2 degrees of caster, which really helps the car track straighter on the highway and makes steering feel more direct.

You'll notice the heavy-duty lower spring bucket, which is built to handle both factory coil springs and popular aftermarket options like Viking and QA1 hybrid coils. UMI also included greaseable polyurethane bushings and bump stops; these give you a crisp response without making the ride too harsh. The sway bar mounts are a double shear swivel design, working with UMI's own sway bars and most factory eyelet style bars. These A-arms are a direct bolt-in replacement, making the upgrade process straightforward.

When you're rebuilding the front end of a classic GM F-body or B-body, getting the suspension geometry right is key. These A-arms offer a solid foundation for a more responsive and stable vehicle. UMI also offers an optional hardware kit, with options for both 1/2" standard and 14mm metric mounting hardware, to ensure a clean installation. Remember to check your vehicle's existing hardware size before ordering the kit.