6 inch GM Suspension Lift Kit - 1973-1991 GM 1-2 Ton Solid Axle Vehicles 4WD-K420
6 inches Suspension Lift Kit for 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991 Chevy:GMC 1:2 Ton Solid Axle Vehicles 4WD  16 inches Suspension Lift Kit for 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991 Chevy:GMC 1:2 Ton Solid Axle Vehicles 4WD

SuperLift 6″ Suspension Lift Kit for 1973-1991 Chevy/GMC 1/2 Ton Solid Axle Vehicles 4WD

$499.95

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SKU: K420 Category: Brands: .

Product Description

SuperLift 6″ Suspension Lift Kit for 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991 Chevy/GMC 1/2 Ton Solid Axle Vehicles 4WD

Part: K420

  • Replacement Front leaf springs
  • Durable Urethane spring eye bushings
  • Raise steering arm or drop drag link available
  • Superlift Superide shock absorbers are included
  • Lifetime Warranty
  • Satisfaction Guarantee

Tire and Wheel Info

35×12.50 tire on standard offset wheel

IMPORTANT DISCLAIMER: The provided tire/wheel fitments are approximate.

Actual dimensions of a given tire size can vary considerably from one brand to another.

Manufacturers’ wheel offset and backspacing measurement points are not always consistent.

Backspacing greatly impacts tire-to-fender clearance when turning.

Wheel width and backspacing influence whether the tires protrude past the fenders, and to what extent.

Considering these important factors, we recommend that you fit-check your tire/wheel selection prior to purchasing.


Installation Notes

1977.5-91 models require clearancing (machining) of the front driveshaft CV cluster to prevent binding. If vehicle has single exhaust, the cross-over pipe requires modification to clear front driveshaft.

Optional extended length brake hoses recommended.

Brake line / hose relocating hardware included in kit box.

88-91 Blazer, Jimmy, and Suburban require additional sleeve kit part # 315-88.


Installation Instructions


Product Overview

Superlift Superide 6″ leaf springs feature tapered leaves, bolt-style spring clips and Teflon inserts between each leaf to ensure a quiet and smooth ride. Durable Poly spring bushings, replacement front U-bolts, brake hose relocation brackets, a rear block and u-bolt kit and a 4″ raised steering arm complete the lift. The kit is packaged complete with Superlift Superide shocks.

Options include single and dual steering stabilizers, sway bar extension brackets, a front driveshaft spacer and a 2″ or 4″ drop drag link.

NOTE: If the vehicle is factory-equipped with auxiliary (dual) front shocks also order quantity two, part number 85150 Superide shocks.

NOTE: 88-91 Blazer/Jimmy and Suburban models require additional part number 315-88 bushing sleeve kit.


Fitment Table

Year RangeMakeModelDrivetrainEngineCab
1973-1987Chevy/GMC1/2-ton Pickup4WD
1973-1991Chevy/GMC1/2-ton Suburban4WD
1973-1991Chevy/GMCBlazer / Jimmy (Fullsize)4WD

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