4 Inch Lift Kit | 56 Inch Rear Springs | Chevy/gmc 3/4-ton Suburban/c25/k25 Truck (73-76)

Built for 1970s Chevy and GMC 3/4-ton truck owners who want more ground clearance and tire capacity, this 4-inch lift kit raises your chassis to clear 33–35 inch tires while preserving driveline geometry. Rough Country's N3 shock absorbers deliver balanced on and off-road performance, so your rig handles as well as it sits.

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 absorbers engineered for balanced performance across on and off-road terrain.
• N3 Shock Pair (Rear) — Matched damping for consistent suspension feel front to back.
• Raised Steering Arm — Corrects caster geometry after the lift to maintain proper steering feel and tire wear.
• Front Installation Kit — Brackets, fasteners, and hardware for secure front mounting.
• Universal U-Bolt Kit — Heavy-duty fastening for leaf spring axle attachment.
• 4-Inch Front Leaf Springs (qty 2) — Progressive-rate springs that carry the added weight of modern tires and gear.
• 4-Inch Rear Leaf Springs (qty 2) — Matched rear springs maintain load-carrying capacity and suspension balance.

Important notes

• Kit fits only vehicles equipped with 56-inch rear leaf springs. Verify your spring length before ordering.
• If your truck has a factory front sway bar, drop brackets are recommended (SKU: 1019) to maintain proper suspension geometry and prevent sway-bar interference.
• If your vehicle is equipped with factory front quad shocks (4 total front shocks), add the Factory Quad Shock kit (SKU: Q20027) to your order for correct fitment.

Why customers pick this at Road Runner

• Rough Country lifetime warranty backed by local technicians who service these trucks every week.
• Caster correction included — our raised steering arm restores proper wheel alignment geometry after the lift.
• Professional alignment performed in-house as part of every lift installation.
• Same-day installation keeps your downtime to a minimum.

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