4 Inch Lift Kit | M1 | Chevy Silverado & Gmc Sierra 1500 4wd (1999-2006 & Classic)

Built for Silverado and Sierra 1500 owners who want a commanding lift without factory-style compromises, this Rough Country 4" NTD Suspension Lift Kit delivers genuine ground clearance and the tire clearance to run 33"–35" rubber. The system retains your truck's torsion bars, factory ride quality, and axle alignment — no major driveline rework needed.

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 and rear lift-kit boxes — precision-engineered crossmembers, differential-drop brackets, and non-torsion-bar drop brackets that keep everything tucked and aligned.
• Lifted front knuckles (driver & passenger pair) — raise the front end while maintaining factory geometry and axle position.
• 5" rear blocks — support the rear frame and allow up to 33"–35" tire fitment.
• M1 Monotube shocks (front and rear pair) — nitrogen-charged for consistent damping, comfort on-road, and control off-road.
• CV spacers, sway-bar links, and protective skid plate — complete the system with all brackets, fasteners, and shields needed for a clean install.

Important notes

• Frame-bracket and differential modification required. Not a direct bolt-on; structural work is part of the install.
• Does not fit 1999 OBS (old body style) models — fitment is 2000–2006 and 2007 Classic models only.
• Factory-painted bumpers will require valance and bumper trimming for wheel clearance.
• If your truck is equipped with factory 17" wheels and you're purchasing new wheels, the new wheels must be 17" or larger.
• Torsion bar removal tool (Rough Country #1067) is recommended for faster, easier installation.
• Auto Trac systems remain fully compatible; no recalibration needed.

Why customers pick this at Road Runner

• Factory-geometry suspension — caster and axle angles stay true, reducing premature wear and maintaining drivability.
• Rough Country lifetime warranty backed locally by our team — no mail-in hassles.
• Professional install by technicians who perform these kits every week — frame work, differential drops, and shock tuning all done right.
• Alignment performed in-house as part of every lift install — ensures tire life and straight tracking after your lift is complete.
• Complete kit — nothing left out; you get crossmembers, knuckles, blocks, shocks, links, and skid plate in one box.

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