UMI Performance 78-88 GM G-Body Spring/Shock Lowering Kit 1in Rear 550lb

UMI’s lowering package includes four Viking double adjustable shocks, a hybrid front coil-over spring system with 550 lb front springs, and your choice of 1 or 2-inch UMI rear lowering springs. The 550 lb springs are ideal for small block handling and all big block applications except for drag racing, providing a firm, performance-oriented ride with excellent control.

The hybrid front coil-over system allows a 0–3" adjustable front drop, while the rear springs offer 1" or 2" lowering options to fine-tune stance and appearance. Viking’s double adjustable shocks provide 19 compression and 19 rebound settings, allowing quick, tool-free adjustments for street, strip, or precise cornering performance.

The kit is fully bolt-in, requiring no welding or front spring compressor, and optional Spanner Wrench and Thrust Bearing Kits make height adjustments easier. This setup delivers maximum handling and stability for high-performance street and track vehicles.

Spanner Wrench & Thrust Bearing Kit: Spanner wrench tool is used to adjust vehicle height while shock stays mounted. This wrench is needed to make height adjustments. The thrust bearing kit is designed to be placed between the spring and the spring seat attached to the shock. This makes for easier adjustments since the spring seat is rotating on a bearing.

This kit is recommended for easier adjustments but is not needed to complete the installation. We do not recommend adjusting without a thrust bearing kit.

Bolt in kit, no welding required. And best of all, no spring compressor required up front

250lb- 11" tall springs for drag race only. Serious lightening required.