What is the primary benefit of installing these rear lift bars?

These lift bars are designed to improve rear suspension traction and reduce wheel hop. By working with axle torque, they help load the chassis and push the tires into the ground for harder launches and better 60-foot times.

Do I need to weld these bars on?

For street applications, these bars are a true bolt-in requiring no drilling or welding. However, welding is recommended for vehicles that will be used for drag racing with drag radials or slicks.

Can I still use a sway bar with these lift bars?

Yes, the lift bars have provisions for adding a stock or aftermarket sway bar. The sway bar holes are reinforced with a steel sleeve and positioned to maintain the sway bar's level with the rear end.

UMI Performance 64-72 GM A-Body Rear Lift Bars-Bolt-In

Specifications

Brand: UMI Performance
Part #: 4022-R
UPC: 4022-R

UMI Performance 64-72 GM A-Body Rear Lift Bars-Bolt-In

Name: UMI Performance 64-72 GM A-Body Rear Lift Bars-Bolt-In
Brand: UMI Performance
Price: 522.23 USD
Availability: InStock

$522.23

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UMI Performance 64-72 GM A-Body Rear Lift Bars-Bolt-In. Improves traction and reduces wheel hop.

Key Features

Fits 1964-1972 GM A-Body vehicles including Chevrolet Chevelle, Oldsmobile Cutlass, and Pontiac GTO.
Bolt-in design requires no drilling or welding for street applications.
Constructed from boxed mild steel tubing with 1/8" wall thickness and 3/16" thick mounting brackets.
Greaseable polyurethane bushings reduce deflection while remaining streetable.
Features reinforced sway bar mounting holes compatible with stock or aftermarket sway bars.
Adjustable control arm angle with three mounting settings (2", 2-3/4", or 3-1/4" drop).

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

UMI Performance is known for making well-built suspension components for muscle cars, and their 4022-R Rear Lift Bars are a prime example of that focus. If you're looking to get more out of your classic GM A-Body's rear suspension, especially when launching hard, these bars are designed to help. They work by using axle torque to load the chassis, which forces the rear wheels down, pushing the tires firmly into the pavement. This action is key to achieving harder launches and improved 60-foot times, all while helping to reduce that frustrating wheel hop you might be experiencing.

Constructed from boxed mild steel tubing with a 1/8" wall thickness and 3/16" thick mounting brackets, these lift bars are built solid. They feature greaseable polyurethane bushings that offer a good balance between reducing deflection for better performance and maintaining streetability. The design also includes provisions for adding a stock or aftermarket sway bar, with reinforced, TIG-welded sleeves in the sway bar holes to keep it level with the rear end. You can also adjust the control arm angle using the three-hole mounting design, allowing you to tune the lift bar to be lowered 2", 2-3/4", or 3-1/4", which is especially useful for correcting geometry on lowered vehicles.

Installation is designed to be a straightforward bolt-in process for most street applications, requiring no drilling or cutting. However, for vehicles running drag radials or slicks, welding is recommended for maximum security. The kit comes complete with mounting hardware and installation instructions, making it a comprehensive solution for improving your rear suspension's traction and launch characteristics. For the ultimate rear suspension setup, UMI suggests pairing these with their adjustable upper control arms.