6 Inch Lift Kit | 56 Inch Rr Springs | Chevy/gmc 3/4-ton Suburban (77-91)/c25/k25 Truck (77-87)

Built for classic Chevy and GMC 3/4-ton truck and Suburban owners who want a level stance, more tire clearance, and a commanding ride height — this 6-inch lift kit raises your front end to match the rear for a factory-balanced look without sacrificing ride quality. Support up to 37-inch tires with proper wheel backspacing, and keep your driveline geometry correct with matched front and rear spring travel.

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

• Front leaf springs (pair) — Lifted to 6 inches, engineered to work in tandem with rear springs for a level stance.
• Rear leaf springs (pair) — 4-inch lift blocks and springs combine to balance front height and preserve factory ride geometry.
• N3 shock absorbers (pair) — Rough Country's premium 10-stage variable nitrogen-charged shocks with 18mm spring-loaded piston rod and 54mm shock body for smooth highway and capable off-road performance.
• Steering arm — Raised geometry to maintain correct caster and steer angles after lift.
• Brake line relocation brackets — Prevent stretching and maintain brake system safety at the new ride height.
• Spring bushings and U-bolts — All hardware needed to secure springs to axles.
• Installation kit — Complete fastener set for secure mounting.

Important notes

• This kit ONLY fits vehicles with front and rear solid axles — confirm your truck matches before ordering.
• ONLY fits vehicles equipped with factory 56-inch rear leaf springs — measure your current springs to verify fitment.
• If your vehicle is equipped with a factory front sway bar, Rough Country drop brackets (SKU: 1019) are recommended to avoid bind and maintain suspension articulation.
• Vehicles with factory quad shocks (two front shocks per side) will use a single aftermarket shock per side after this installation.
• Wheel backspacing must be verified to safely accommodate up to 37-inch tires — our techs confirm clearance during alignment.

Why customers pick this at Road Runner

• Corrected caster geometry — our alignment specialists set your angles in-house after every lift install, so your truck steers true and tire wear stays even.
• Lifetime Replacement Warranty backed by Rough Country and serviced right here — no shipping parts across the country.
• Professionally installed by techs who perform 3/4-ton lifts every week — we know your truck's quirks and get it right the first time.
• Alignment performed in-house as part of every lift — no guesswork, no trips to a third-party shop.
• Local expertise — we stock Rough Country kits and keep common wear parts on the shelf for fast service and support.

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