QA1 78-88 GM G-Body Rear Sway Bar – 1in

QA1 1in rear sway bar sharpens handling balance on GM G-Body coupes, wagons, and El Camino/Caballero trucks.

This QA1 solid-core rear sway bar adds rear roll stiffness to GM G-Body chassis to help balance handling when the front end is upgraded with performance suspension. The bolt-on design uses factory mounting points for a straightforward installation. QA1 part number 52878 is manufactured to meet or exceed OE specifications.

Key Features

• 1 in diameter solid-core 1045 steel construction
• Balances front and rear roll couple for reduced understeer
• Bolt-on installation using factory mounting locations
• QA1 part 52878 ships ready to install with no additional machining required
• Part 52878 is manufactured under QA1’s quality control standards in the USA
• Reference part 52878 when ordering matching components or replacement hardware
• QA1 52878 is backed by the manufacturer’s standard warranty
• Part 52878 uses QA1’s standard finish and corrosion protection process

Fitment

Specifications

What’s Included

• 1 rear sway bar
• End links and mounting bushings

About QA1

QA1 has manufactured precision suspension and chassis components in the United States since 1969, supplying racers and performance enthusiasts with rebuildable ball joints, control arms, sway bars, trailing arms, and chassis stiffening products engineered for consistent handling under load.

Related Parts

• QA1 64-72 GM A-Body Anti-Hop Bars – Rear
• QA1 65-79 Ford F100 Front Sway Bar – 1-3/8in
• QA1 64-72 GM A-Body Front Sway Bar – 1-1/4in
• QA1 63-87 Chevrolet C10 Sway Bar Kit 1-3/8in – Front

FAQ

Will this fit my vehicle exactly as listed

Check the fitment table above for the exact years, make, and model this part covers. Chassis and suspension parts often differ by body style within the same model line, so confirm your specific submodel and factory suspension type before ordering.

What is included in the box

This listing includes the component shown in the title. Mounting hardware is included only when stated in the specifications table above. Some installations require separate spring adapters or companion parts noted in the specifications.

Do I need any special tools to install this

Standard hand tools, a floor jack, and jack stands cover most installations. A spring compressor and ball joint separator are recommended for control arm and ball joint work, and a torque wrench is required to bring fasteners to spec.

Is this a direct bolt-on replacement

Yes, this part is engineered to bolt into the factory mounting locations on the listed applications. No cutting, drilling, or welding is required unless specifically noted.

Can I install this myself or do I need a professional

Most owners with intermediate mechanical skills and a lift or jack stands can complete this installation using common tools. If you are not experienced with suspension or chassis work, a certified shop is recommended.

Does this work with my stock suspension components

Compatibility with factory or aftermarket springs, shocks, and companion parts depends on the specific kit. Review the specifications table above for any required companion parts before ordering.

Does this come with a warranty

This part is covered by the manufacturer’s standard warranty against defects in materials and workmanship. Retain your receipt as proof of purchase.

Will this affect my vehicle’s ride height or alignment

Chassis and suspension components can change ride height, caster, or camber depending on design. Have your alignment checked after installation to keep tire wear and handling within spec.

Installation Instructions

1. Raise and support the vehicle by the frame and support the rear axle
2. Disconnect the factory sway bar end links if present
3. Position the QA1 sway bar mounts per the install sheet
4. Connect the end links to the mounts and torque to specification
5. Recheck all fasteners after the first drive