Suspension and Components› Rear Suspension Components

UMI PERFORMANCE

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

$479.99

SKU: U01C 4022-B

In Stock
In Stock
Ships by Oct 3
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The bolt on lift bar set up from UMI is designed for easy installation without the need for drilling, welding, or cutting. The rear lift bars replace the factory rear control arms to improve traction and reduce wheel hop. Made of boxed mild steel tubing and featuring greaseable polyurethane bushings, the lift bars work with axle torque to improve launches and 60-foot times. The mounting brackets have three settings for lowering the lift bar to correct lost geometry and instant center on a lowered vehicle. The kit includes mounting hardware and installation instructions. For added performance, consider adding UMI adjustable upper control arms to maximize rear suspension set-up. Installation of P/N 4022 is a bolt-in set-up, but welding is recommended for vehicles running drag radials or slicks. Bolting is recommended for street applications only. The lift bar set up features CNC machined control arms, MIG-welded bushing holders with greaseable polyurethane bushings, and CNC laser-cut mounting brackets. The design allows for adjustable control arm angle and reinforced sway bar holes to keep the sway bar close to the rear end. Grade 8 mounting hardware ensures durability, and a durable powder coat finish adds to the overall quality of the product.
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Part #: 4022-B

The bolt on lift bar set up from UMI requires no drilling, welding or cutting making it a true bolt on. The UMI rear lift bars replace the factory rear control arms adding traction while not changing vehicle ride height. Lift bars work with axle torque to load the chassis of the car, forcing the rear wheels downward pushing the tires into the ground resulting in harder launches and improved 60-foot times. The UMI lift bars are designed to improve traction and reduce unwanted wheel hop. Lift bars are constructed of boxed mild steel tubing, 1/8" thick wall and 3/16" thick mounting brackets. Lift bars feature greaseable polyurethane bushings which are designed to reduce bushing deflection while being streetable. Lift bar kit features the correct provisions for adding a stock or aftermarket sway bar, the sway bar holes are placed in the correct pattern to maintain the sway bar level with the rear end while the lift bar is in the lowest hole. Sway bar holes are reinforced with a 1/8" wall thickness steel sleeve TIG welded into place. The rear mounting brackets feature three settings that allow the lift bar to be lowered 2", 2-3/4" or 3-1/4". Lift bar set up is designed to correct lost geometry and correct instant center on a lowered vehicle. Add a set of UMI adjustable upper control arms for the maximal rear suspension set-up and performance.

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Vehicle Symptoms
  • Wheel hop during hard acceleration
  • Poor traction off the line
  • Rear end feels loose under power
  • Bogging down at launch
  • Tires chirp or spin too easily
Relevant Conversations
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  • Bolt-in lift bars vs weld-on
  • 1964-1972 GM A-body suspension upgrade
  • UMI 4022-B install tips
  • Rear lift bars with polyurethane bushings

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandUMI PERFORMANCE
Part NumberU01C 4022-B

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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