1982-2003 S10/S15 Front Upper A-arms, ½” Taller Ball Joints

1982-2003 Chevrolet S-10 (2WD)
1982-2003 GMC S-15 (2WD)

Improve the street and track performance of your GM truck and achieve that precise Pro-Touring feel by combining our popular P/N 3033 upper a-arms with ½” taller premium ball joints. P/N 3033-2 a-arms combine the benefit of additional caster with increased negative camber potential throughout the suspension travel. The relocated ball joint plate offers up to six degrees caster without excessive shimming while the ½” taller ball joint creates up to one additional degree negative camber at full bump travel. Expect improved steering feel courtesy of increased caster and an overall increase in lateral grip due to the camber improvement. Features include greaseable, low deflection UMI designed and manufactured Delrin bushings, chromoly cross shafts, improved header clearance and polyurethane bump stops. These track-tested, jig built DOM a-arms are supplied with a durable gloss red or black powder coat finish which guarantees your performance parts stay beautiful on your street truck, drag truck, autocrosser or Pro-touring machine. Designed and manufactured with pride in Philipsburg, PA - USA.

Hardware kit, Part # 3012 - Upper A-Arm hardware kit includes 12mm Grade 10.9 bolts, washers and nylock nuts. Kit includes everything needed to mount your new UMI Performance a-srms to your vehicle.


  • New premium ½” taller ball joints for improved camber curve
  • Relocated ball joint pad for increased caster without excess shims
  • CNC machined ball joint mount & tubing radiuses
  • Robust tubular design with machined gussets
  • Precision  bent tubing on programmable tube bender
  • TIG welded for superior strength & clean looks
  • 4140 chromoly cross shafts, CNC machined & zinc plated
  • UMI built, greaseable & fluted CNC machined no deflection Delrin bushings
  • Polyurethane bump stops included
  • Direct bolt-in compatible with factory or UMI lower a-arm & factory spindle
  • May also work in conjunction with other brand lower A-arms and/or spindles
  • Package includes recommended alignment specs & detailed installation instructions

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Starting at: $599.99

  • Part #: 3033-1
  • Manufactured by: UMI Performance Inc.
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