UMI Performance · New
UMI Performance 64-72 GM A-Body Tubular Upper & Lower Front A-Arm Kit- Delrin Bushings
MPN 403256-3-R · Store SKU umi403256-3-R
Supplier stock checked 11/7/2026, 1:31:45 PM UTC. Adding a part does not reserve it.
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Product details
Lower a-arms are assembled with UMI manufactured greaseable & fluted CNC machined zero deflection Delrin bushings for ultimate smooth suspension action Contact us for other ball joint options. These arms work nicely with other tall spindles and proper ball joint selection. This kit is intended for use only with lowered cars. The upper a-arm bump stop is not compatible with raised vehicles. Premium 0.9" taller upper ball joints for improved camber curve, lowered center of gravity and reduced bump steer 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 Upper a-arms feature race quality rod ends and are adjustable to reduce the need for shims Relocated upper ball joint mounting pad for improved caster & better steering feel Package includes recommended alignment specs & detailed installation instructions 0.9” taller ball joints provides the same benefit as a 0.9” taller spindle 403256-3 - 64-72 GM A-Body Tubular Upper & Lower A-Arm Kit- Delrin Bushings Pro Tour ready. Suitable for competition use. Superior performance. Designed and manufactured with pride in Philipsburg, PA – USA 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 Simply bolt-on & go
Manufacturer fitment & guides
Check 403256-3-R against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- California Proposition 65: Y