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UMI Performance lowering kit for 1978–1988 GM G-Body cars is a bolt-in suspension package focused on maximum handling and stability for street and track use. The hybrid front coil-over system allows a 0–3" adjustable drop while rear springs offer a 1" or 2" drop. This setup pairs Viking double-adjustable shocks with 550 lb front springs tailored for small block handling and big block applications (except drag), and includes 19 compression and 19 rebound settings plus optional adjustment tools.
UMI Performance 78-88 GM G-Body Spring/Shock Lowering Kit 1in Rear 550lb
