Improve handling and make your classic A-Body feel like a modern day muscle car by combining our popular P/N 4033 upper a-arms with ½" taller premium ball joints. P/N 4033-1 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, CrMo 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 car, drag car, autocrosser or Pro-touring machine. Designed and manufactured with pride in Philipsburg, PA - USA.
Note: The UMI 4033 upper a-arm is designed to work with factory height or lowered cars. We do not recommend using the 4033 with cargo coils or above stock height cars, as the bump stop may contact the cross brace.
Hardware kit, Part # 4003 - Upper A-Arm hardware kit includes 7/16-14 Grade 8 bolts, washers and nylock nuts. Kit includes everything needed to mount your new UMI Performance A-Arms to your vehicle.
Package includes recommended alignment specs and detailed installation instructions
UMI Performance 64-72 A-Body Tubular Front Upper A-arms 1/2in Taller Ball Joints
Direct bolt-in compatible with factory or UMI lower a-arm and factory spindle
4033-1 - 1964-1972 A-Body Tubular Front Upper A-arms, ½” Taller Ball Joints
May also work in conjunction with other brand lower A-arms and/or spindles
UMI built, greaseable & fluted CNC machined no deflection Delrin bushings
Relocated ball joint pad for increased caster without excess shims
New premium 1/2" taller ball joints for improved camber curve
4140 CrMo cross shafts, CNC machined & zinc plated
Precision bent tubing on programmable tube bender
TIG welded for superior strength and clean looks
CNC machined ball joint mount & tubing radiuses
Robust tubular design with machined gussets
UMI- A-Arms, Upper, +1/2 Ball Joint
Polyurethane bump stops included
Front Control Arms
Features:
