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UMI Performance lowering kit for 1978–1988 GM G-Body cars is a fully bolt-in spring and shock system that provides adjustable stance and firmer handling. The hybrid front coil-over system allows a 0–3" front drop and the rear springs offer a 1" or 2" lowering option. This configuration features 450 lb front springs recommended for small block cruise and big block drag use, paired with Viking double-adjustable shocks offering 19 compression and 19 rebound settings; optional tools simplify height adjustments.
UMI Performance 78-88 GM G-Body Spring/Shock Lowering Kit 1in Rear 450lb
