Fabtech 20-21 GM K3500HD 3.5in Uniball UCA Kit w/Stealth

If you're looking to give your 2020-2021 Chevrolet Silverado 3500 HD a more aggressive stance and the ability to clear 35-inch tires, this 3.5-inch Uniball UCA Kit from Fabtech is a solid option. It directly replaces the factory upper control arms with a much stronger Uniball design, which also allows for increased wheel travel and an improved caster angle for better alignment with larger tires.

The upper control arms are built from sturdy 1.50-inch OD, .120-wall 4130 Chromoly tubing, offering significantly less flex than stock arms for a more connected feel on the road. Instead of ball joints, these arms use robust 1-inch FK Stainless PTFE-lined Uniball bearings, which are known for their durability in tough offroad conditions. The kit also includes Fabtech's forged torsion bar keys to provide additional ride height adjustment, and 2-inch blocks with U-bolts for the rear to help level out the truck's stance. The included Stealth shocks feature a sealed monotube design with a Nitrocarb piston rod, offering good corrosion resistance and damping for both highway comfort and offroad performance.

This kit is designed to add strength and reliability to your Silverado 3500 HD while giving it a commanding presence. The Uniball pin is designed to fit the factory ball joint taper without needing to modify the spindle, making it easier to return the vehicle to stock if needed. You'll want to refer to the manufacturer's installation instructions for specific details on the process.