UMI Performance 68-72 GM A-Body Rear Suspension Kit - Black

Rebuild the rear of your A body with tubular control arms and the right hardware

The UMI Performance ABR801-B is a direct bolt on rear upper and lower control arm kit for 1968 to 1972 GM A body cars. Built in Philipsburg, Pennsylvania from 1.500 inch by 0.120 inch DOM tubing, this kit minimizes wheel hop, sharpens corner entry, and brings tired stamped factory control arms back to modern muscle car standards. Greasable Energy Suspension polyurethane bushings, reinforced sway bar provisions, and Grade 8 hardware mean this is a one and done upgrade for street, autocross, and track day duty.

Why A body owners choose the UMI ABR801-B kit

• Tubular rear lower control arms in 1.500 inch by 0.120 inch DOM steel, TIG welded for strength
• Non adjustable upper control arms with CNC machined 0.250 inch steel mounting plates
• Greasable Energy Suspension fluted polyurethane bushings at every pivot
• Reinforced sway bar holes with 0.120 inch wall steel sleeves TIG welded in place to prevent crushing
• New rear end housing bushings included
• Grade 8 mounting hardware with nylon lock nuts
• Durable gloss black powder coat finish
• Direct bolt in design, no welding or modification required
• Made in the USA

Designed for traction, handling, and consistency

Factory A body rear control arms are stamped steel with rubber bushings that go soft, deflect under load, and rust from the inside out. The result is wheel hop on launch, sloppy mid corner behavior, and rear end skate over bumps. UMI replaces the entire setup with thick wall DOM tubing, precision machined ends, and high durometer polyurethane bushings that hold geometry under hard cornering and hard launches. The lower arms retain the factory sway bar mounting location so you can run an OEM or aftermarket rear bar without modification.

Fitment

This UMI ABR801-B rear control arm kit fits the following 1968 to 1972 GM A body chassis:

• 1968 to 1972 Chevrolet Chevelle
• 1968 to 1972 Chevrolet El Camino
• 1968 to 1972 Buick Skylark
• 1968 to 1969 Buick Special
• 1968 to 1969 Buick Sportwagon
• 1970 to 1972 Buick GS
• 1968 to 1972 Oldsmobile Cutlass
• 1968 to 1972 Oldsmobile Vista Cruiser
• 1968 to 1972 Pontiac GTO
• 1968 to 1970 Pontiac Tempest

Always verify your year, make, and model against the manufacturer listing before ordering.

Specifications

• Part number: ABR801-B
• Material: 1.500 inch by 0.120 inch DOM steel tubing, MIG and TIG welded
• Bushings: Greasable Energy Suspension polyurethane, fluted on uppers
• Finish: Gloss black powder coat
• Hardware: Grade 8 with nylon lock nuts
• Adjustability: Non adjustable uppers and lowers
• Sway bar provision: Reinforced factory location with welded steel sleeves
• Country of origin: USA, Philipsburg, Pennsylvania

What is in the box

• Pair of tubular rear lower control arms with greasable polyurethane bushings
• Pair of tubular rear upper control arms with CNC machined mounting plates
• New Energy Suspension rear end housing bushings
• Complete Grade 8 mounting hardware with nylon lock nuts

Installation Instructions

1. Park the vehicle on a level surface, raise the rear, support the chassis on jack stands, and support the rear axle housing with a jack so it cannot drop when the control arms are removed.
2. Disconnect the rear sway bar end links from the lower control arms to free up the bar.
3. Remove the factory rear lower control arm bolts at the axle housing and the frame, one arm at a time, and lift the original arm out.
4. Install the UMI tubular lower control arm in the same orientation, using the supplied Grade 8 bolts and nylon lock nuts, leaving the hardware finger tight for now. Repeat for the second lower arm.
5. Remove and replace the upper control arms one at a time the same way, then install the new Energy Suspension rear end housing bushings per the included instructions.
6. Set the vehicle back on its wheels at ride height, then torque all four control arm bolts and the housing bushing hardware to the values listed in the UMI instruction sheet.
7. Reconnect the rear sway bar end links to the reinforced sway bar mounts on the new lower arms.
8. Grease each polyurethane bushing through the supplied zerk fittings, then road test at low speed and confirm there are no contact points, noises, or binding before driving aggressively.

Why buy from Black Ops Auto Works

We are enthusiast owned and operated, and we ship authentic UMI Performance hardware sourced directly through authorized channels. Want to round out the rear with sway bar, frame braces, or coilovers? Reach out before you order and we will help you stack the right parts in the right order.