Improve performance and make your classic A-Body feel like a modern day muscle car with a complete set of fabricated tubular a-arms from UMI Performance. UMI's P/N 403233-1 upper and lower a-arm kit replaces the worn out, stock stamped a-arms with high-strength tubular construction and a host of premium features. The stock geometry lower a-arms feature tough tubular construction with polyurethane spring isolators for ride comfort and greaseable Delrin bushings for precise handling and smooth suspension motion. We build the Delrin bushings in-house to ensure the ultimate in quality and smooth suspension action. The ball joint mount is angled slightly from stock to permit usage with lowered vehicles and the design offers additional tire clearance. The tubular upper a-arms are assembled with smooth operating, low deflection UMI designed and manufactured Delrin bushings as well as UMI-built billet CrMo cross shafts. They feature a relocated mounting pad to increase caster without excessive shims and are loaded with ½" taller upper ball joints to improve camber performance. Both upper and lower a-arms are jig built to maintain accuracy for a perfect fit every time and come preloaded with premium ball joints. Critical areas are TIG welded for superior strength and a clean look. UMI's extensive testing on the street, drag strip and skid pad ensures a quality product able to with stand all types of conditions. The P/N 403233-1 a-arm kit will work with factory springs, lowering springs and coil over kits such as the popular QA1 coil over set up. For the best handling and tire life from the UMI designed a-arms, included with each kit are recommended alignment specs along with detailed installation instructions. UMI Performance a-arm kit P/N 403233-1 is shipped fully assembled and ready for installation.
Hardware kit, Part # 4004 - Upper and lower A-Arm hardware kit includes Grade 8 bolts, washers and zinc plated nylock nuts needed to install this complete kit. The hardware kit P/N 4004 adds the finishing touch to your installation and replaces the worn factory hardware with new, high quality fasteners.
A-arm kit is assembled with UMI manufactured greaseable & fluted CNC machined zero deflection Delrin bushings for ultimate smooth suspension action
Fits factory spindles, drop spindles & works with factory springs, lowering springs and coilover kits
Polyurethane bump stops, polyurethane spring isolators & new premium ball joints installed
Relocated upper ball joint mounting pad for improved caster & better steering feel
Package includes recommended alignment specs & detailed installation instructions
Designed and manufactured with pride in Philipsburg, PA – USA
UMI Performance 64-72 GM A-Body Front A-arm Kit Delrin Bushings
403233-1 - 1964-1972 GM A-Body Front A-arm Kit, Delrin Bushings
New premium 1/2" taller ball joints for improved camber curve
TIG welded DOM tubing for superior strength and clean looks
CNC machined ball joint holders and tubing radiuses
4140 CrMo cross shafts, CNC machined & zinc plated
Durable glossy red or black powder coat finish
UMI- A-Arm Kit, Tall Upper Ball Joint
Simply bolt-on & go
Front Control Arms
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