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UMI Performance Part # UMIGBF350-1

UMI Performance 78-88 GM G-Body Spring/Shock Lowering Kit 1in Rear 350lb - GBF350-1

$2,634.87 CAD
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Canadian since 2005Mississauga, Ontario
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UMI’s lowering package includes four Viking double adjustable shocks, a hybrid front coil-over spring system with 350 lb front springs, and your choice of 1 or 2-inch UMI rear lowering springs. The 350 lb springs are ideal for small block cruising or drag racing with moderate weight reduction, offering a balanced mix of ride quality and improved performance. The hybrid front coil-over system provides a 0–3" adjustable front drop, while the rear springs allow for either a 1" or 2" drop to fine-tune the vehicle’s stance. Viking’s double adjustable shocks feature 19 compression and 19 rebound settings, enabling quick, tool-free suspension adjustments for street, strip, or improved cornering performance. The kit is completely bolt-in, requiring no welding or front spring compressor, and optional Spanner Wrench and Thrust Bearing Kits make ride height changes even easier. This setup delivers enhanced adjustability and performance while maintaining good street manners, making it a versatile choice for small block 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
  • Front springs with 350lb spring rate
  • Rear springs with choice of 1" or 2" rear drop
  • 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
  • 350lb, Small block cruise or drag race with lightening required

Application

  • UMI designed GBF350 to fit 1978-1988 GM G-Body vehicles.

Free Canadian shipping on qualifying orders $399+, with no duties or brokerage. Special order and made-to-order items can't be cancelled or refunded once ordered. Oversized items may have a handling fee depending on your location; pickup in Mississauga has no fee.

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