Suspension and Components› Suspension Kits
UMI PERFORMANCE
UMI Performance 78-88 GM G-Body Handling Kit Stage 4 450lb Springs 1in Drop - Black
SKU: U01C GBF004-1-B
Advanced — 4+ hours
Description
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 GBF004-1-B |
Videos
G-Body Coilover Install: Ultimate Handling Upgrade
Unboxing the suspension for the Monte Carlo. UMI GBF002-2-r 78-88 G-body stage 2 kit.
How to Adjust Viking Coilover Shocks: Tips for the Best Performance
Upgrade Front Suspension | G-Body Build Series | S1E5
Front Factory Suspension Removal | G-Body Build Series | S1E4
Installing a Racing Front Suspension on the S10
Installing the UMI front suspension on the Monte
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.
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