3-3.5" 2020-2026 GMC Sierra 2500HD / 3500HD Lift Kit by Skyjacker

The Skyjacker C20350 3-3.5-Inch Suspension Lift Kit for 2020-up GMC Sierra 2500HD and 3500HD trucks increases ride height, improves front suspension geometry, and adds clearance while retaining the factory front shock configuration. The system combines heavy-duty replacement upper control arms, forged torsion keys, front shock extension brackets, differential lowering spacers, 2-inch rear lift blocks, U-bolts, and supporting hardware. Multiple shock options are available, including ADX M2.0 Monotube, BlackMAX, Hydro 7000, Nitro 8000, and M95 shocks, so you can configure the suspension package around your ride and damping preferences.

Skyjacker replacement upper control arms are constructed from thick-wall DOM steel tubing to provide additional strength for the heavier-duty Sierra HD suspension. Welded gusseting reinforces critical areas of the arms, while CNC-machined bushing eyelets and ball joint cups promote precise component fitment. Steel-encased OEM-style rubber bushings help maintain smooth, controlled suspension movement, and greaseable ball joints provide dependable articulation with improved serviceability. Built-in camber correction helps maintain proper front-end geometry and alignment after increasing suspension height.

Forged torsion keys provide the front lift and use application-specific indexing to achieve the intended ride height while offering greater strength than cast alternatives. One-piece front shock extension brackets allow the factory front shocks to operate with the taller suspension, while four differential lowering spacers reposition the front differential to improve CV axle and driveshaft operating angles. At the rear, 2-inch lift blocks and longer U-bolts raise the suspension to complement the front lift and create a more balanced stance.

The C20350 can be configured with Skyjacker ADX M2.0 Monotube, BlackMAX, Hydro 7000, Nitro 8000, or M95 shocks. ADX M2.0 shocks use a gas-charged aluminum monotube design with an internal floating piston for consistent damping and efficient heat management, while M95 shocks provide high-pressure monotube performance for demanding driving conditions. Nitro 8000 shocks offer gas-charged damping for responsive suspension control, BlackMAX shocks use foam-cell hydraulic technology, and Hydro 7000 shocks provide velocity-sensitive hydraulic damping for smooth street and trail performance. Combined with the heavy-duty control arms, forged torsion keys, differential correction, and rear lift components, the C20350 provides a comprehensive suspension upgrade for lifted Sierra 2500HD and 3500HD trucks.

Features & Benefits

• Provides 3 to 3.5 inches of suspension lift for increased ground clearance and a more aggressive stance
• Designed for 2020-up GMC Sierra 2500HD and 3500HD trucks
• Heavy-duty replacement upper control arms constructed from thick-wall DOM steel tubing
• Welded control arm gussets provide additional strength and rigidity
• Built-in camber correction helps maintain proper front suspension geometry after lifting
• CNC-machined bushing eyelets and ball joint cups promote precise component fitment
• Steel-encased OEM-style rubber bushings help maintain smooth and controlled suspension operation
• Greaseable upper control arm ball joints provide dependable articulation and improved serviceability
• Forged torsion keys provide increased strength and application-specific suspension indexing
• Front shock extension brackets retain the factory front shock configuration at the increased ride height
• Four differential lowering spacers help improve CV axle and driveshaft operating angles
• 2-inch rear lift blocks complement the increased front suspension height
• Includes longer rear U-bolts for the lifted suspension configuration
• Includes high-grade supporting suspension hardware
• Available with Skyjacker ADX M2.0 Aluminum Monotube shocks
• ADX M2.0 shocks use a gas-charged aluminum monotube IFP design for consistent damping and heat management
• Available with Skyjacker BlackMAX foam-cell hydraulic shocks
• Available with Skyjacker Hydro 7000 velocity-sensitive hydraulic shocks
• Available with Skyjacker Nitro 8000 gas-charged shocks
• Available with Skyjacker M95 gas-charged monotube IFP shocks
• Multiple shock configurations allow the suspension system to be matched to different ride and performance preferences