Zone Offroad C63N 2-Inch Torsion Bar Key Lift Kit with Nitro Shocks for 2007-2013 Chevy Silverado / GMC Sierra 1500

The Zone Offroad C63N is a complete 2-inch torsion bar key lift kit designed for 2007–2013 Chevrolet Silverado and GMC Sierra 1500 4WD trucks. This kit delivers a leveled, trail-ready stance while maintaining the factory-style ride quality — all with a straightforward, bolt-on installation.

At the core of this kit are CNC-machined, indexed torsion bar keys that are 100% resonance frequency tested to ensure defect-free castings capable of withstanding serious abuse. The front torsion keys work in conjunction with a rear block and U-bolt kit to lift both ends of the truck and preserve the classic tail-high stance.

This kit also includes Zone Nitro performance shocks — nitrogen gas-charged units engineered to reduce shock fade and deliver improved ride quality over stock on both pavement and off-road terrain.

Kit Contents:

• 2x CNC-machined indexed torsion bar keys (front)
• Zone Nitro nitrogen gas-charged shocks
• 2-inch rear lift blocks
• Extended U-bolts and all required mounting hardware

Key Features:

• 2 inches of front and rear lift for a leveled stance
• Torsion keys are USA-made and resonance frequency tested for casting integrity
• CNC machined to ensure precise, consistent lift height
• Nitrogen gas-charged Nitro shocks reduce fade and improve ride consistency
• 100% bolt-on design — no cutting or welding required
• Provides clearance for larger aftermarket tires
• Compatible with RPO-specific torsion bar configurations — check glove box sticker before ordering

Important Fitment Notes:

• Will NOT fit 2007 "Classic" model trucks (see kits for 1999–2006 models)
• Will NOT fit vehicles equipped with MagneRide magnetic ride control
• Will NOT fit vehicles equipped with Auto-Ride suspension

Backed by Zone Offroad's 3-year / 36,000-mile worry-free warranty on hard parts, with a limited lifetime warranty thereafter. Shock seals are subject to normal wear and are not covered under the standard warranty terms.