6 Inch Lift Kit | 56 Inch Rear Springs | Chevy/gmc C10/k10 Truck & Suv/k5 Blazer (77-87)

Built for classic Chevy and GMC truck owners who want the stance, clearance, and capability to tackle bigger tires and serious terrain — this 6" lift kit transforms your C10/K10 or K5 Blazer with a complete front and rear suspension overhaul. Gain up to 37" tire clearance while maintaining factory-like ride quality and corrected steering geometry.

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) — Premium application-valved shocks with 10-stage variable valving, high-pressure nitrogen charge, and 54mm shock body for balanced on-road comfort and off-road control.
• N3 Shock Pair (Rear) — Matched rear shocks engineered for your exact application to maintain consistent ride quality across the suspension.
• 6" Front Leaf Springs (Pair) — Application-specific lifted springs that deliver increased ground clearance while preserving ride comfort and control geometry.
• 4" Rear Leaf Springs (Pair) — Engineered rear springs for balanced lift and proper weight distribution.
• Raised Steering Arm — Corrects steering geometry after the lift, ensuring tight, responsive handling and proper alignment.
• Bushing Kit — OEM-grade bushings maintain suspension articulation and durability.
• Installation Kits & Hardware — All brackets, fasteners, and brake-line drops needed for a complete, bolt-on installation.

Important notes

• This kit only fits vehicles with 56" rear leaf springs. Confirm your rear spring size by measuring eyelet-to-eyelet before ordering.
• If your truck is equipped with a front sway bar, drop brackets (SKU 1019) are recommended to maintain geometry and clearance.
• Vehicles with factory quad shocks (2 front shocks per side) will use a single aftermatic shock per side — the kit accounts for this.
• Proper backspacing is critical: the 37" tire clearance assumes correct wheel offset. Verify your wheel specs before fitment.

Why customers pick this at Road Runner

• Professional installation by techs who perform these classic GM lifts every week — we know the quirks of 77–87 leaf-spring geometry.
• Rough Country Limited Lifetime Warranty backed locally — we handle warranty service right here.
• Alignment performed in-house as part of every lift install, ensuring corrected caster and steering arm geometry from day one.
• Complete BOM included — no hidden add-ons. Raised steering arm, all installation brackets, and brake-line hardware ship in the box.

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