6 Inch Lift Kit | Chevy/gmc 3/4-ton Suburban/c20/k20 Truck/c25/k25 Truck (77-91)

Built for Chevy and GMC 3/4-ton truck owners who want a level stance and room for 35–37 inch tires, this 6-inch lift kit raises your truck's front end to match the rear, delivering both improved ground clearance and a factory-engineered ride. It pairs lifted leaf springs with rear blocks, add-a-leafs, and premium N3 shocks to maintain balanced suspension geometry at any height.

Installed and serviced at Road Runner Wheels & Tires. Most lift kits go in the same day. Call (678) 400-6467 to schedule.

What's included

• 6-inch front lifted leaf springs — Set of two springs that raise the front end while preserving ride quality and maintaining proper caster alignment.
• 4-inch rear lift blocks — Stack blocks that level the rear suspension to match the new front height.
• Add-a-leaf spring kit — Additional leaf layers for the rear to support the load and maintain factory-like ride characteristics.
• N3 series shock absorbers — Premium 10-stage variable nitrogen-charged shocks with 18mm spring-loaded piston rods and 54mm shock bodies, tuned for both on-road comfort and off-road performance.
• Brake line relocation brackets — Repositions brake lines to maintain clearance and prevent kinking after lift installation.
• U-bolts and hardware — All fasteners needed to secure springs and blocks in place.

Important notes

• If your truck is equipped with a front sway bar, drop brackets are recommended (sold separately, SKU: 1019).
• Vehicles with factory quad shocks (two front shocks per side) will use a single aftermarket shock per side.
• Wheel backspacing and offset must be chosen to safely accommodate up to 37-inch tires; consult with our team on fitment.

Why customers pick this at Road Runner

• Rough Country lifetime warranty backed locally — we stand behind every install.
• Professionally installed by technicians who perform these kits every week, ensuring correct geometry and torque specs.
• Alignment performed in-house as part of every lift install, correcting caster and keeping your truck handling straight.
• All brake line and suspension adjustments completed on-site — no guesswork.

Ready to build it? Call (678) 400-6467. Hablamos Español.