UMI’s lowering package includes four Viking double adjustable shocks, a hybrid front coil-over spring system with 450 lb front springs, and your choice of 1 or 2-inch UMI rear lowering springs. The 450 lb springs are recommended for small block cruising and big block drag racing, providing a firmer ride for improved handling and performance. The hybrid front coil-over system allows a 0–3" adjustable front drop, while the rear springs offer 1" or 2" lowering options to achieve the desired stance. Viking’s double adjustable shocks feature 19 compression and 19 rebound settings, enabling easy, tool-free tuning for street, strip, or corner-carving performance. The kit is fully bolt-in, requiring no welding or front spring compressor, and optional Spanner Wrench and Thrust Bearing Kits simplify height adjustments. This setup delivers a strong balance of ride quality and performance for both street and drag applications.
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.
UMI’s lowering kit includes Viking double adjustable shocks, 450 lb front coil-overs, and 1" or 2" rear lowering springs. Bolt-in design allows tool-free tuning for street or drag applications, offering firm handling and adjustable stance.
Baseline shock settings - 6C,8R all around street, 10C,12R all around corner carving, 6C,2R front and 6C,6R rear strip
Double adjustable features 19 independent compression and rebound settings (for a total of 361 possible combinations)
6C,8R all around street, 10C,12R all around corner carving, 6C,2R front and 6C,6R rear strip
Viking features Premium quality Made In USA springs, shot peened and coated for durability
Bolt in kit, no welding required. And best of all, no spring compressor required up front
Lower ride height improves handling by placing the upper a-arm in a more favorable angle
Tune for street, strip or corner carving at the turn of a knob - no tools required
Thrust bearing kit designed for easier adjustments but not needed for installation
Spanner wrench tool is used to adjust vehicle height while shock stays mounted
UMI lowering kit with Viking shocks, 450 lb coil-overs, and rear springs.
Easy front height adjustment with optional Torrington bearings and wrench
UMI Performance 78-88 GM G-Body Spring/Shock Lowering Kit 1in Rear 450lb
250lb- 11" tall springs for drag race only. Serious lightening required.
Lower ride height improves handling by lowering center of gravity
(2) Front springs with choice of 250, 350, 450 or 550 spring rate
350lb- Small block cruise or drag race with lightening required.
Tune for street, strip or corner carving at the turn of a knob
0-3" lowering range up front, 1 or 2 inch choice for the rear
Front springs with choice of 250, 350, 450 or 550 spring rate
550lb- Small block handling, all big blocks except drag.
(2) Rear springs with choice of 1" or 2" rear drop
450lb- Small block cruise, big block drag race.
Rear springs with choice of 1" or 2" rear drop
450lb, Small block cruise, big block drag race
(2) Front coil over shocks, double adjustable
Front coil over shocks, double adjustable
Shocks hand built in Lakeville, Minnesota
(2) Rear shocks, double adjustable
Rear shocks, double adjustable
Front Spring Rate Options:
UMI/Viking- Coilover Kit
Baseline shock settings
no tools required
Kit Includes:
Lowering Kit
