CST 4.5" Stage 3 Suspension System — 19-25 Chevy / GMC 1500 (Trail Boss / AT4)

4.5" of lift on high-clearance subframes — built specifically for the factory-lifted Trail Boss and AT4 — for 2019–2025 Chevy Silverado Trail Boss / GMC Sierra AT4 1500 (4WD). Maximum ground clearance with laser-cut fabricated knuckles. Must run 20" or larger wheels.

What this stage includes

• High-clearance front subframes with diff-drop brackets
• Laser-cut, machined steering knuckles
• Sway-bar drops and ABS drop brackets
• 4" fabricated offset rear lift blocks with an 11.5" U-bolt kit
• All hardware
• Plus CST DIRT-Series front coilovers
• Plus CST DIRT-Series rear shocks

Why CST

• 4.5" of lift engineered for the Trail Boss / AT4's factory ride height
• USA-made high-clearance subframes that protect vital front components
• Laser-cut, machined knuckles for strength and durability

Good to know

• Requires 20" or larger wheels
• Clears 35" tires with no trimming, or 37s with minor trimming (20x9, 5" backspacing)
• Max wheel backspacing: 5"
• Professional installation and alignment recommended