UMI Performance 403233-1-B Front Upper & Lower Control Arm Kit A-Body

The UMI Performance 403233-1-B is a complete upper and lower tubular A-arm kit designed to replace worn factory stamped control arms on classic A-Body vehicles. This bolt-on suspension upgrade transforms handling performance with high-strength tubular construction and premium components throughout.

Key Features:

• TIG welded DOM tubing construction for superior strength and clean appearance
• UMI-manufactured greaseable, fluted CNC machined Delrin bushings for zero deflection and smooth suspension action
• Premium ball joints installed - uppers are 1/2" taller to improve camber curve performance
• Relocated upper ball joint mounting pad increases caster without excessive shims for better steering feel
• 4140 Chrome-Moly cross shafts, CNC machined and zinc plated for durability
• CNC machined ball joint holders and tubing radiuses for precision fit
• Polyurethane bump stops and spring isolators included for ride comfort
• Angled lower ball joint mount permits use with lowered vehicles and provides additional tire clearance
• Jig-built construction ensures accuracy and perfect fitment every time

What's Included:

• Complete upper and lower A-arm kit, fully assembled and ready to install
• Hardware kit (P/N 4004) with Grade 8 bolts, washers, and zinc plated nylock nuts
• Recommended alignment specifications and detailed installation instructions

Compatibility:

• Works with factory spindles and drop spindles
• Compatible with factory springs, lowering springs, and coilover kits
• Designed for classic GM A-Body applications

This complete suspension system is designed and manufactured in Philipsburg, PA, USA, and features a durable powder coat finish available in black or red. Extensively tested on the street, drag strip, and skid pad to ensure quality performance under all driving conditions.