UMI’s lowering package features four Viking double adjustable shocks, a hybrid front coil-over spring system with 250 lb front springs, and your choice of 1 or 2-inch UMI rear lowering springs. The 250 lb springs are 11" tall and intended exclusively for drag racing applications with significant vehicle weight reduction, providing excellent front-end lift and weight transfer for improved traction. The hybrid front coil-over system allows a 0–3" adjustable drop, while the rear springs offer 1" or 2" lowering options to fine-tune stance. Viking’s shocks provide 19 compression and 19 rebound settings, letting you dial in suspension performance for street, strip, or cornering with simple knob adjustments—no tools required. The bolt-in design eliminates the need for welding or a spring compressor for the front, and optional Spanner Wrench and Thrust Bearing Kits make height adjustments smoother. This setup is purpose-built for drag racing performance and is not recommended for street handling 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, hybrid front coil-overs with 250 lb springs, and 1" or 2" rear lowering springs. Designed for drag racing, it improves weight transfer and traction with adjustable ride height.
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, hybrid 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 250lb
250lb- 11" tall springs for drag race only. Serious lightening required.
(2) Front springs with choice of 250, 350, 450 or 550 spring rate
Lower ride height improves handling by lowering center of gravity
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
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.
(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:
Baseline shock settings
UMI- Lowering Kit
no tools required
Kit Includes:
Lowering Kit
