UMI Performance 403133-R Front Upper & Lower Control Arm Kit

Transform your classic A-Body's handling with the UMI Performance 403133-R complete front control arm kit. This bolt-on upgrade replaces worn factory stamped steel arms with precision-engineered tubular construction, delivering modern muscle car performance and handling.

Upper Control Arms Feature:

• UMI-manufactured CNC machined zero deflection Delrin bushings for smooth operation and longevity
• Relocated ball joint mounting pad increases caster angle without excessive shims for improved steering feel
• Billet 4140 chromoly cross shafts, CNC machined and zinc plated for maximum strength
• Premium greaseable ball joints pre-installed

Lower Control Arms Feature:

• Greaseable fluted polyurethane bushings deliver precise handling with a smooth ride
• Polyurethane spring isolators for improved ride comfort
• Angled ball joint mount designed for lowered vehicle compatibility
• Enhanced wheel and tire clearance over stock design
• Polyurethane bump stops included

Premium Construction:

• TIG welded DOM tubing throughout for superior strength and clean appearance
• CNC machined ball joint holders and tubing radiuses ensure precision fit
• Jig-built for guaranteed accuracy and perfect fitment every time
• Durable red or black powder coat finish resists corrosion and looks great

Application & Compatibility:

• Works with factory spindles and height suspension setups
• Compatible with factory springs, lowering springs, and coil-over kits including QA1
• Not recommended for cargo coils or above-stock-height applications due to potential bump stop contact with cross brace

Each kit ships fully assembled and ready to install. Includes recommended alignment specifications and detailed installation instructions. Optional hardware kit P/N 4004 available separately with Grade 8 bolts, washers, and zinc-plated nylock nuts. Designed and manufactured with pride in Philipsburg, Pennsylvania, USA.