UMI Performance 1964-1972 GM A-Body 1S Tubular Rear Sway Bar, Chassis Mounted

Part Number: UMI4047-300-B

UMI Performance 1964-1972 GM A-Body 1S Tubular Rear Sway Bar, Chassis Mounted

Part Number: UMI4047-300-B

$519.95

In Stock

( Inventory updated: 06/06/2026 )

Estimated ship date: 2-3 business days

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1964-1972 GM A-Body 1S Tubular Rear Sway Bar, Chassis Mounted

  • 1964-1972 GM A-Body 1? Tubular Rear Sway Bar, Chassis Mounted
  • 1? Billet steel hex adjuster for extreme strength
  • 100% bolt in installation!
  • Axle Tube Diameters:
  • CNC machined sway bar mounts with grip teeth and reinforcement gussets
  • Designed to clear all rear ends- 10-Bolt, 12-Bolt, 9?, M9, S60 and others
  • Durable long lasting powder coat
  • Factory rear end, Strange Engineering and Currie rear ends use 3? diameter axle tubes
  • Features:
  • Heavy duty race style CrMo spherical rod ends with Teflon race
  • High strength 4140 CrMo zinc-plated u-bolts
  • Light weight 1? tubular sway bar, CNC bent
  • Moser Engineering 12-bolt rear ends use 3? diameter axle tubes
  • Moser Engineering 9? rear ends manufactured after early 2002 use 3? axle tubes. Rear ends manufactured prior to early 2002 use 3.25? axle tubes. Please verify diameter before ordering.
  • Other brand rear ends will vary, please check your axle tube diameter before ordering.
  • Premium greaseable polyurethane bushings
  • UMIs A-body Pro-Tour style bar is a true multi purpose high performance rear sway bar. The chassis and differential housing mounts reduce bind normally associated with the factory style bars. The bars are 1 diameter hollow and feature three different rates (street/auto-x, road race/strip). UMIs tried and true CNC machined clamping system allows differential housing mounting on 2.75, 3 and 3.25 diameter housings. These can be bolted on, or welded for additional security. The double shear chassis mounts are held in place by four 3/8 fasteners. Drilling through the crossmember is required and a template /instructions are included. The house made hex adjuster allows pre-loading of the bar when used for drag applications so your car leaves straight. Choose the longest hole for street, middle hole for auto-x, road race and the shortest hole for drag use.

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UMI Performance

UMI Performance was founded in 2002 as a father/son business developing performance parts for GM and Ford products. They quickly began to focus on suspension upgrades for both older and late model muscle cars, and have become a leader in replacement and high-performance suspension components, from individual parts to entire kits.

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