UMI PERFORMANCE
UMI Performance 73-77 GM A-Body Upper & Lower Control Arm Kit
SKU: U01C 421516-B
Description
Part #: 421516-B
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. The boxed lower control arms feature reinforced sway bar mounting holes to allow factory style sway bar mounting while the included shim allows sway bar to sit at factory height. The upper fixed length control arms feature a heavy duty " 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.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | UMI PERFORMANCE |
| Part Number | U01C 421516-B |
Videos
Buy with Confidence
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.
View Full Return Policy