4 Inch Lift Kit - Chevy/GMC C20/K20 C25/K25 Truck/Half-Ton Suburban (77-91)
Give your truck an impressive upgrade, front to back with Rough Country's 4" GM Suspension Lift Kit! This easy-to-install lift kit raises the front of your vehicle to be equal height with the rear for a leveled, better-than-stock look that gives an improved ride height and more aggressive appearance. This kit features a set of front lifted leaf springs allowing you gain additional ride height without sacrificing ride quality or performance. A set of rear blocks and brake line brackets are provided to keep everything at optimum angles for a factory-like ride, even after lifting. A set of Rough Country's premium N3 shocks are also included. These fine tuned 10-stage variable high-pressure Nitrogen charged shocks offer a fantastic blend of off-road action and smooth highway ride quality. With a durable 18mm spring-loaded piston rod and faster-cooling 54mm shock body. Get the wheels you want! Rough Country's 4" GM Suspension Lift Kit comes with everything you need to fit up to a 35" tire with proper wheel backspacing. Best of all, Rough Country's 4" GM Suspension Lift Kit is backed by our Lifetime Replacement Warranty.
  • Increased ground clearance
  • Includes application valved N3 series shock absorbers which offer the best in balanced performance for on and off-road use.

Information:

If vehicle is equipped with a front sway-bar, drop brackets are recommended. (SKU: 1019) Vehicles with factory quad shocks (2 front shocks per side) will simply use a single aftermarket shock.

Application Summary:

Year Make/Model
1977-1986 Chevrolet K20
1977-1986 Chevrolet K20 Suburban
1987-1988 Chevrolet V20 Suburban
1989-1991 Chevrolet V2500 Suburban
1977-1978 GMC K15 Suburban
1977-1978 GMC K25
1977-1978 GMC K25 Suburban
1979-1986 GMC K2500
1979-1986 GMC K2500 Suburban
Attributes
California Proposition 65 WARNING: Cancer - www.P65Warnings.ca.gov
Category Susp Lift Kits 4wd, Susp Lift Kits 4wd
Country of Origin (Primary) US
Front Components Lifted leaf springs Steering arm Brake line relocation brackets U-bolts Hardware, Lifted leaf springs/Steering arm/Brake line relocation brackets/U-bolts/Hardware
Front Kit Componenets Lifted leaf springs, Steering arm, Brake line relocation brackets, U-bolts, Hardware
GTIN 00843030130015
Harmonized Tariff Code (Schedule B) 8708801600
Hazardous Material Code N
Install Time 6-8 hours, 6 - 8 hours
Installation Time 6-8 hours
Life Cycle Status Code Available to Order
Lift/Drop Height 4 in.
NAFTA Preference Criterion Code B
Rear Components 4" lift blocks U-bolts Hardware, 4 in. lift blocks/U-bolts/Hardware, 4 inch lift blocks U-bolts Hardware
Rear Kit Components 4in Lift Blocks, U-Bolts, Hardware
SDR Required Flag N
Shipping Group No Restrictions
Shipping Options No Restrictions
Ships in Multiple Boxes Y, Y
Tire & Wheel Size Combinations 35x12.50 R15 - 15x8, Backspacing: 4.5in
Tire Info 35x12.50R15:15x8:8x6.5/8x165.1:-39:Trimming Required;35x12.50R15:15x8:8x6.5/8x165.1:-19:-;35x12.50R15:15x8:8x6.5/8x165.1:-18:-;35x12.50R15:15x8:8x6.5/8x165.1:+0:-;35x12.50R15:15x8:8x6.5/8x165.1:+1:-;35x12.50R15:15x10:8x6.5/8x165.1:-39:Trimming Required;35x12.50R16:16x8:8x6.5/8x165.1:-12:-;35x12.50R16:16x8:8x6.5/8x165.1:-6:-;35x12.50R16:16x10:8x6.5/8x165.1:-39:Trimming Required;35x12.50R17:17x9:8x6.5/8x165.1:-12:-;315/70R17:17x9:8x6.5/8x165.1:-12:-;305/70R17:17x9:8x6.5/8x165.1:-12:-;285/75R17:17x9:8x6.5/8x165.1:-12:-;35x12.50R17:17x9:8x6.5/8x165.1:+0:-;315/70R17:17x9:8x6.5/8x165.1:+0:-;305/70R17:17x9:8x6.5/8x165.1:+0:-;285/75R17:17x9:8x6.5/8x165.1:+0:-;35x12.50R17:17x9:8x6.5/8x165.1:+1:-;315/70R17:17x9:8x6.5/8x165.1:+1:-;305/70R17:17x9:8x6.5/8x165.1:+1:-;285/75R17:17x9:8x6.5/8x165.1:+1:-;35x12.50R17:17x9:8x6.5/8x165.1:+18:-;35x12.50R17:17x9:8x6.5/8x165.1:+20:-;35x12.50R18:18x9:8x6.5/8x165.1:-12:-;295/70R18:18x9:8x6.5/8x165.1:-12:-;285/75R18:18x9:8x6.5/8x165.1:-12:-;35x12.50R18:18x9:8x6.5/8x165.1:+0:-;35x12.50R18:18x9:8x6.5/8x165.1:+1:-;35x12.50R18:18x9:8x6.5/8x165.1:+18:-;35x12.50R18:18x9:8x6.5/8x165.1:+20:-;35x12.50R20:20x9:8x6.5/8x165.1:-12:-;35x11.50R20:20x9:8x6.5/8x165.1:-12:-;295/65R20:20x9:8x6.5/8x165.1:-12:-;295/60R20:20x9:8x6.5/8x165.1:-12:-;35x12.50R20:20x9:8x6.5/8x165.1:+0:-;295/60R20:20x9:8x6.5/8x165.1:+0:-;285/60R20:20x9:8x6.5/8x165.1:+0:-;35x12.50R20:20x9:8x6.5/8x165.1:+1:-;295/60R20:20x9:8x6.5/8x165.1:+1:-;285/60R20:20x9:8x6.5/8x165.1:+1:-;35x12.50R20:20x9:8x6.5/8x165.1:+18:-;35x12.50R20:20x9:8x6.5/8x165.1:+20:-;35x12.50R20:20x10:8x6.5/8x165.1:-25:-;35x12.50R20:20x10:8x6.5/8x165.1:-19:-;295/60R20:20x10:8x6.5/8x165.1:-19:-;285/60R20:20x10:8x6.5/8x165.1:-19:-;35x12.50R20:20x10:8x6.5/8x165.1:-18:-;295/60R20:20x10:8x6.5/8x165.1:-18:-;285/60R20:20x10:8x6.5/8x165.1:-18:-;35x12.50R22:22x10:8x6.5/8x165.1:-25:-;35x12.50R22:22x10:8x6.5/8x165.1:-19:-;285/55R22:22x10:8x6.5/8x165.1:-19:-;35x12.50R22:22x10:8x6.5/8x165.1:-18:-;285/55R22:22x10:8x6.5/8x165.1:-18:-
Tire Information 35x12.50R15:15x8:8x6.5/8x165.1:-39:Trimming Required;35x12.50R15:15x8:8x6.5/8x165.1:-19:-;35x12.50R15:15x8:8x6.5/8x165.1:-18:-;35x12.50R15:15x8:8x6.5/8x165.1:+0:-;35x12.50R15:15x8:8x6.5/8x165.1:+1:-;35x12.50R15:15x10:8x6.5/8x165.1:-39:Trimming Required;35x12.50R16:16x8:8x6.5/8x165.1:-12:-;35x12.50R16:16x8:8x6.5/8x165.1:-6:-;35x12.50R16:16x10:8x6.5/8x165.1:-39:Trimming Required;35x12.50R17:17x9:8x6.5/8x165.1:-12:-;315/70R17:17x9:8x6.5/8x165.1:-12:-;305/70R17:17x9:8x6.5/8x165.1:-12:-;285/75R17:17x9:8x6.5/8x165.1:-12:-;35x12.50R17:17x9:8x6.5/8x165.1:+0:-;315/70R17:17x9:8x6.5/8x165.1:+0:-;305/70R17:17x9:8x6.5/8x165.1:+0:-;285/75R17:17x9:8x6.5/8x165.1:+0:-;35x12.50R17:17x9:8x6.5/8x165.1:+1:-;315/70R17:17x9:8x6.5/8x165.1:+1:-;305/70R17:17x9:8x6.5/8x165.1:+1:-;285/75R17:17x9:8x6.5/8x165.1:+1:-;35x12.50R17:17x9:8x6.5/8x165.1:+18:-;35x12.50R17:17x9:8x6.5/8x165.1:+20:-;35x12.50R18:18x9:8x6.5/8x165.1:-12:-;295/70R18:18x9:8x6.5/8x165.1:-12:-;285/75R18:18x9:8x6.5/8x165.1:-12:-;35x12.50R18:18x9:8x6.5/8x165.1:+0:-;35x12.50R18:18x9:8x6.5/8x165.1:+1:-;35x12.50R18:18x9:8x6.5/8x165.1:+18:-;35x12.50R18:18x9:8x6.5/8x165.1:+20:-;35x12.50R20:20x9:8x6.5/8x165.1:-12:-;35x11.50R20:20x9:8x6.5/8x165.1:-12:-;295/65R20:20x9:8x6.5/8x165.1:-12:-;295/60R20:20x9:8x6.5/8x165.1:-12:-;35x12.50R20:20x9:8x6.5/8x165.1:+0:-;295/60R20:20x9:8x6.5/8x165.1:+0:-;285/60R20:20x9:8x6.5/8x165.1:+0:-;35x12.50R20:20x9:8x6.5/8x165.1:+1:-;295/60R20:20x9:8x6.5/8x165.1:+1:-;285/60R20:20x9:8x6.5/8x165.1:+1:-;35x12.50R20:20x9:8x6.5/8x165.1:+18:-;35x12.50R20:20x9:8x6.5/8x165.1:+20:-;35x12.50R20:20x10:8x6.5/8x165.1:-25:-;35x12.50R20:20x10:8x6.5/8x165.1:-19:-;295/60R20:20x10:8x6.5/8x165.1:-19:-;285/60R20:20x10:8x6.5/8x165.1:-19:-;35x12.50R20:20x10:8x6.5/8x165.1:-18:-;295/60R20:20x10:8x6.5/8x165.1:-18:-;285/60R20:20x10:8x6.5/8x165.1:-18:-;35x12.50R22:22x10:8x6.5/8x165.1:-25:-;35x12.50R22:22x10:8x6.5/8x165.1:-19:-;285/55R22:22x10:8x6.5/8x165.1:-19:-;35x12.50R22:22x10:8x6.5/8x165.1:-18:-;285/55R22:22x10:8x6.5/8x165.1:-18:-
Tire, Wheel, and Offset Info 35x12.50R15:15x8:8x6.5/8x165.1:+0:-
Utv Product N

Rough Country 150.20 4 Inch Lift Kit

Product Information

  • Brand: Rough Country
  • Product Number: 150.20
  • Availability: Call for Availability

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