6 Inch Lift Kit | Rear Springs | Chevy/gmc 3/4-ton Suburban/c20/k20 Truck/c25/k25 Truck (73-76)

Built for 1973–1976 Chevy and GMC 3/4-ton owners who want serious ground clearance and capable leaf-spring suspension, this 6-inch lift kit raises your classic truck and delivers balanced on and off-road performance. The included N3 series shock absorbers are application-valved to handle both highway cruising and rough terrain, while the new front and rear leaf springs restore geometry and let you run 35–37 inch tires.

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

• N3 Shock Pair (Front) — Application-valved shock absorbers engineered for balanced performance on and off-road, tuned specifically for your vehicle's weight and spring rate.
• N3 Shock Pair (Rear) — Matched rear shocks that work in harmony with the new leaf springs to absorb bumps and maintain traction.
• 6-inch Front Leaf Spring (Pair) — Heavy-duty springs that raise the front 6 inches and restore proper caster and pinion angles after the lift.
• 6-inch Rear Leaf Spring (Pair) — OE-style rear springs matched to the front geometry for a level stance and consistent ride quality.
• Raised Steering Arm — Compensates for suspension geometry changes to maintain correct Pitman arm angle and steering response.
• Front Installation Kit — Hardware, brackets, and fasteners specific to your 1973–1976 C20/K20 or C25/K25 application.
• Universal U-Bolt Kit — Heavy-duty fasteners that secure the leaf springs to the axles.

Important notes

• This kit only fits models equipped with 52-inch rear leaf springs. Verify your vehicle's spring length before ordering.
• If your truck has a factory front sway bar, Rough Country recommends adding drop brackets (SKU: 1019) to maintain suspension geometry and handling balance.
• If your vehicle is equipped with factory front quad shocks (4 total front shocks), add the Factory Quad Shock kit (SKU: Q20027) to ensure all four shocks are matched and supported.

Why customers pick this at Road Runner

• Rough Country lifetime warranty backed by local expert techs who install these kits every week.
• Professional alignment performed in-house as part of every lift install — critical for steering response and tire wear on classic trucks.
• Application-valved shocks tuned for your specific truck — not generic parts, but matched to your weight and intended use.
• Raised steering arm included — most aftermarket kits skip this, but we know it's essential for correct geometry.
• Same-day installation in our shop; minimal downtime for your classic rig.

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