UMI Performance · New
UMI Performance 64-67 GM A-Body Rear Control Arm Kit Fully Boxed Lowers Adjustable Uppers
MPN 402126-B · Store SKU umi402126-B
Supplier stock checked 11/7/2026, 1:59:46 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
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Product details
UMI’s rear control arm kit is a bulletproof addition to your car. Suitable for street, strip or corner carving, this kit minimizes suspension deflection for a crisp handling setup and less wheel hop. Kit includes UMI’s premium fully boxed lower control arms designed to offer a factory look while still providing enhanced performance to the vehicle. The fully boxed lower control arms are built from larger 3” x 1-1/2” rectangular tubing and feature CNC machined radius ends and reinforced sway bar holes. Boxed control arms include fully capped radius ends to prevent debris from entering to arm while offering the factory look to your classic. The heavy duty upper control arms feature on car adjustment for quick and easy pinion angle changes for maximum performance. Upper control arms feature heavy duty ¼” thick laser cut mounting pads designed to work on all rear end housings. UMI’s control arms are CNC machined for accuracy and assembled with high quality greaseable polyurethane bushings. Installation: Item installs in approximately 2 hours using basic hand tools. 402126 - 1964-1967 GM A-Body Rear Control Arm Kit, Boxed Lowers, Adj Uppers Fully boxed design uses nicely capped ends to maintain factory look Greaseable polyurethane bushings with zinc plated steel sleeves UMI built CrMo and zinc plated heavy duty on car adjusters Durable and long lasting powder coat finish CNC machined for accuracy and consistency CNC laser cut ¼” upper mounting pad MIG welded heavy duty bushing holders Made in Philipsburg, PA – USA 1/8” wall mild steel tubing Features
Manufacturer fitment & guides
Check 402126-B against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
