UMI Performance GBF250-1 - 78-88 GM G-Body Spring/Shock Lowering Kit 1in Rear 250lb

UMI Performance GBF250-1 - 78-88 GM G-Body Spring/Shock Lowering Kit 1in Rear 250lb

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.

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.

• 0-3" lowering range up front, 1 or 2 inch choice for the rear
• Lower ride height improves handling by lowering center of gravity
• Lower ride height improves handling by placing the upper a-arm in a more favorable angle
• Viking features Premium quality Made In USA springs, shot peened and coated for durability
• Easy front height adjustment with optional Torrington bearings and wrench
• Shocks hand built in Lakeville, Minnesota
• Double adjustable features 19 independent compression and rebound settings (for a total of 361 possible combinations)
• Tune for street, strip or corner carving at the turn of a knob
• no tools required
• Baseline shock settings
• 6C,8R all around street, 10C,12R all around corner carving, 6C,2R front and 6C,6R rear strip
• Bolt in kit, no welding required. And best of all, no spring compressor required up front
• Front coil over shocks, double adjustable
• Rear shocks, double adjustable
• Spanner wrench tool is used to adjust vehicle height while shock stays mounted
• Thrust bearing kit designed for easier adjustments but not needed for installation