UMI Performance · New
UMI Performance 64-72 GM A-Body 1in Tubular Rear Sway Bar Chassis Mounted
MPN 4047-300-B · Store SKU umi4047-300-B
Supplier stock checked 11/7/2026, 12:35:17 PM UTC. Adding a part does not reserve it.
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Product details
UMI's 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). UMI's 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. 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. Factory rear end, Strange Engineering and Currie rear ends use 3” diameter axle tubes Other brand rear ends will vary, please check your axle tube diameter before ordering. Designed to clear all rear ends- 10-Bolt, 12-Bolt, 9”, M9, S60 and others CNC machined sway bar mounts with grip teeth and reinforcement gussets 4047-300 - 1964-1972 GM A-Body 1” Tubular Rear Sway Bar, Chassis Mounted Heavy duty race style CrMo spherical rod ends with Teflon race Moser Engineering 12-bolt rear ends use 3” diameter axle tubes 1” Billet steel hex adjuster for extreme strength Premium greaseable polyurethane bushings Light weight 1” tubular sway bar, CNC bent High strength 4140 CrMo zinc-plated u-bolts Durable long lasting powder coat 100% bolt in installation! Axle Tube Diameters: Features:
Manufacturer fitment & guides
Check 4047-300-B against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- California Proposition 65: Y
