6 Inch Lift Kit | 56 Inch RR Springs | Chevy/GMC 3/4-Ton Suburban (77-91)/C25/K25 Truck (77-87)

Give your GM half-ton and 3/4-ton classics a bold, leveled stance with Rough Country’s 6 Inch GM Suspension Lift System. Designed specifically for the Chevy/GMC 3/4-Ton Suburban (77-91) and C25/K25 Truck (77-87), this kit takes front-to-back capability from stock to standout without sacrificing everyday ride quality. It visually elevates the stance to a more aggressive, head-turning profile while maintaining a balanced, factory-like feel behind the wheel.

• Balanced, leveled ride: Front lifted leaf springs pair with rear springs to bring the front and rear to a uniform height, delivering a confident, level look that enhances handling under load and during spirited cruising.
• Premium shock technology: Includes Rough Country’s N3 shocks—10-stage variable, high-pressure nitrogen-charged for a blend of off-road capability and smooth highway comfort. A robust 18mm spring-loaded piston rod and a 54mm shock body ensure durability and faster cooling under demanding use.
• Maintained geometry with smart hardware: The kit adds a dedicated rear set of leaf springs and brake line brackets, preserving proper angles so braking performance and suspension geometry stay near stock even after lift installation.
• Max tire compatibility: Engineered to fit up to 37" tires with the right wheel backspacing, unlocking a wider tire choice for improved ground clearance and a more commanding road presence.
• Reliability you can trust: Backed by Rough Country’s Lifetime Replacement Warranty, so you can tackle trails and daily driving with long-term confidence.

This 6" GM Suspension Lift System is the go-to upgrade for enthusiasts who want a dramatic, confident look without compromising on ride quality or steering feel. It’s ideal for owners who crave enhanced ground clearance for off-road adventures, improved aesthetics for the classic Suburban or C/K-series trucks, and a ready-to-run setup that supports larger tires with proper backspacing. Pair it with thoughtful maintenance and alignment checks after installation to keep everything tracking true and your truck performing at its best.