Fabtech K1179M 3.5" Lift Kit with Upper Control Arms for 2020-2021 GM 3500HD

The Fabtech K1179M is a premium 3.5-inch suspension lift kit engineered specifically for 2020-2021 GM 3500HD trucks. This comprehensive system delivers increased ground clearance to accommodate up to 35-inch tires while leveling the vehicle's stance for an aggressive, commanding appearance both on-road and off-road.

Heavy-Duty Tubular Upper Control Arms:

This kit replaces the factory upper control arms with Fabtech's reinforced ball joint tubular arms, constructed from 1.50-inch OD DOM steel tubing with 0.120-inch wall thickness. These upgraded arms feature an oversized high-travel ball joint that is significantly larger than the stock components, providing superior strength and durability under demanding conditions. The ball joint geometry is precisely engineered to allow full suspension travel without binding, while the 2.25-inch OD x 0.250-inch wall DOM bushing barrels ensure long-lasting performance. An additional 1 degree of caster is built into the design to maintain proper steering geometry and vehicle stability.

Complete Front and Rear Lift Components:

• Forged torsion bar keys replace factory units and provide adjustable ride height settings
• 2-inch rear lift blocks with U-bolts level the rear stance to match the front lift
• Premium Fabtech Stealth monotube shocks with Nitrocarb piston rods for corrosion and chip resistance
• Sealed shock design delivers excellent highway ride quality with capable off-road damping performance

This complete lift system combines strength, functionality, and refined ride characteristics to transform your GM 3500HD into a more capable and visually impressive truck. All components are designed to work together seamlessly for reliable performance in both daily driving and challenging off-road environments.