UMI PERFORMANCE
UMI Performance 78-88 GM G-Body 12-Bolt Swap Upper and Lower Control Arm Kit
SKU: U01C 301519-R
Description
Part #: 301519-R
This kit includes both the upper and lower rear control arms designed to bolt a 1964-1972 GM A-Body 10-Bolt or 12-Bolt rear end into a 1978-1988 GM G-Body; this includes Monte Carlo, Malibu, El Camino, Regal, Grand National, Grand Prix and Cutlass. The upper control arms supplied with this kit are built at the correct angle to attach to the G-Body chassis as well as the A-Body rear end "ears". These control arms are a must any time this swap is being completed. Using factory upper control arms will cause drastic rear end bind and incorrect driveline angle, this leads to traction lose, vibrations and unsafe handling. The lower control arms are fixed length and center the rear end in the wheel wells, lower arms also feature grease-able Energy Suspension polyurethane bushings and reinforced sway bar holes. For more information on a specific item please visit each products specific link below- Adjustable Upper Control Arms- Item # 3019 Lower Control Arms- Item # 3015
UMI rear control arm kit lets you bolt a 1964-1972 A-Body rear into a 1978-1988 G-Body. Includes upper and lower arms designed to prevent bind, correct driveline angle, and improve handling with greaseable poly bushings and sway bar mounts.
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
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 301519-R |
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