Rough Country

6 Inch Lift Kit | Rear Springs | Chevy/GMC K30/K35 Truck 4WD (77-87)

Part #: 249.20Category: Suspension Lift Kits

Sold & installed by an Authorized Rough Country Dealer

Does it fit? Listed for 5 vehicles (Chevy, GMC). Pick your vehicle to check.

  • Boosted Ground Clearance
  • Application-Specific Front & Rear Leaf Springs
  • Raised Steering Block Included
  • Clears 37-Inch Tires

Install time: 6 - 8 hoursDue to variances in axle sizing, this kit does NOT fit dually models.

Call or request a quote for today’s price and installation.

  • Authorized Rough Country dealer
  • Installed at our Silver Star Rd shop
  • No-credit-needed financing

About the 6 Inch Lift Kit | Rear Springs | Chevy/GMC K30/K35 Truck 4WD (77-87)

Transform Your Truck's Stance and Capability: Upgrade your GM truck from front to back with Rough Country's 6" Suspension Lift Kit. This premium lift delivers a leveled, aggressive look while enhancing ride height and off-road readiness all with an easy bolt-on installation.

Engineered for Superior Ride Quality: This kit includes application-specific front lifted leaf springs, delivering increased ground clearance without sacrificing ride comfort or control. Rear lift blocks, rear leaf springs, and brake line brackets maintain proper geometry, ensuring a smooth, factory-like ride after installation.

Enhanced Performance with N3 Series Shocks: Rough Country's N3 series shocks come standard valved for your exact application and designed to provide a perfect balance of on-road smoothness and off-road capability. Featuring a 10-stage variable valving system, high-pressure nitrogen charge, and durable 54mm shock body with 18mm piston rod, these shocks are built for performance and longevity.

Room for Bigger Tires: Make room for aggressive wheel and tire combos. This 6" lift offers enough clearance to run up to a 37" tall tire with proper backspacing, giving your truck the rugged stance it deserves.

Improved Steering and Handling: To maintain proper drivability, a raised steering block is included correcting steering geometry for tight, responsive handling after the lift.

Limited Lifetime Warranty: Rough Country backs this kit with a Limited Lifetime Warranty, giving you long-term confidence on and off the road.

Notes

  • Due to variances in axle sizing, this kit does NOT fit dually models.

Features

  • Boosted Ground Clearance: Gain the extra height needed for better off-road capability and obstacle clearance.
  • Application-Specific Front & Rear Leaf Springs: Engineered for a perfect fit and optimal ride quality.
  • Raised Steering Block Included: Corrects steering geometry for precise handling and improved alignment.
  • Clears 37-Inch Tires: Provides ample room to run up to a 37" tall tire with no rubbing.
  • Premium N3 Series Shocks: Includes application-valved N3 shock absorbers for balanced on-road comfort and off-road control.

What’s in the Box

Front

  • Lifted Leaf Springs
  • Steering Block
  • Brake Line Relocation Brackets
  • U-Bolts
  • Hardware

Rear

  • Lifted Leaf Springs
  • 2" Lift Blocks
  • U-Bolts
  • Hardware

Shocks

  • (4) Premium N3 Shock Absorbers

Specifications

Specifications for the 6 Inch Lift Kit | Rear Springs | Chevy/GMC K30/K35 Truck 4WD (77-87)
BrandRough Country
TypeSuspension Lift Kits
Part number249.20
Est. Install Time6 - 8 hours

Vehicle Fitment

5 vehicles listed by Rough Country. Always confirm drive type and trim before you order.

Vehicles the 6 Inch Lift Kit | Rear Springs | Chevy/GMC K30/K35 Truck 4WD (77-87) fits
YearsMakeModelDetails
1977–1986ChevyK304WD
1988–1991ChevyK35004WD
1977–1978GMCK354WD
1979–1986GMCK35004WD
1988–1991GMCK35004WD
Map of Orlando Treads & More, 6224 Silver Star Rd, Orlando
Visit the shop

Find Us on Silver Star Road

Opening hours
Monday8:30 AM – 6:30 PM
Tuesday8:30 AM – 6:30 PM
Wednesday8:30 AM – 6:30 PM
Thursday8:30 AM – 6:30 PM
Friday8:30 AM – 6:30 PM
Saturday8:30 AM – 6:30 PM
SundayClosed

Wheelchair-accessible entrance and parking at every office.

Have questions? Call (407) 723-1576

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Rather talk to someone? Call (407) 723-1576 · Mon–Sat 8:30 AM – 6:30 PM

Search wheels, tires and parts

Try “Fuel”, “35x12.50R20”, “F-150 lift kit” or a part number.

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