UMI Performance 303233-B Tubular Front Upper & Lower A-Arm Kit with Delrin Bushings - Black

The UMI Performance 303233-B is a complete front upper and lower tubular A-arm kit engineered to replace worn, stamped factory control arms with high-strength, precision-built components. Shipped fully assembled and ready for installation, this bolt-on kit delivers measurable improvements in steering feel, handling precision, and suspension consistency for both street and track use — all while saving approximately 8 lbs over the factory A-arm set.

The lower A-arms are constructed from TIG-welded DOM tubing and feature greaseable, UMI-designed and manufactured Delrin bushings for precise handling and smooth suspension motion. The ball joint mounting location is angled slightly from stock to accommodate lowered vehicles while also providing additional wheel and tire clearance. Upper A-arms are assembled with the same low-deflection Delrin bushings alongside billet 4140 chromoly cross shafts that are CNC machined and zinc plated for durability. The upper ball joint mounting pad is relocated to increase caster without the need for excessive shims, resulting in improved steering feel and response.

Both upper and lower A-arms are jig-built for precision accuracy and TIG welded at all critical areas for superior strength and a clean appearance. All CNC machined ball joint holders and tubing radii ensure consistent geometry every time. The kit comes pre-installed with premium ball joints and polyurethane bump stops in both the upper and lower A-arms.

Kit Highlights:

• Saves approximately 8 lbs over factory A-arm set
• TIG-welded DOM tubing for superior strength and clean aesthetics
• UMI-designed and manufactured Delrin bushings (upper and lower) for precision handling
• 4140 CrMo cross shafts — CNC machined and zinc plated
• CNC machined ball joint holders and tubing radii
• Relocated upper ball joint mounting pad for improved caster and steering feel
• Premium ball joints and polyurethane bump stops pre-installed
• Compatible with factory spindles and drop spindles
• Works with factory springs, lowering springs, and coilover kits (including QA1)
• Durable gloss black powder coat finish
• Shipped fully assembled — no pre-assembly required
• Includes recommended alignment specs and detailed installation instructions
• Designed and manufactured in Philipsburg, PA, USA

Hardware Kit (Part #3802): The optional upper and lower A-arm hardware kit includes metric Grade 10.9 bolts, washers, and nylock nuts — everything needed to mount the A-arm kit to your vehicle.

UMI Performance products undergo extensive real-world testing on the street, drag strip, and skid pad. Each kit is jig-built at UMI's Philipsburg, Pennsylvania facility using CNC machining, TIG welding, and in-house powder coating to ensure consistent quality and a perfect fit.