UMI Performance 64-72 GM A-Body Tubular Upper & Lower Front A-Arm Kit- Delrin Bushings

403256-3-B

UMI’s 403256-3 a-arm kit adds 1.4 inches of much needed spindle height and includes Delrin lower a-arm bushings and adjustable rod end uppers, making this our ultimate a-arm kit. This kit is for the handling enthusiast who wants the ultimate camber gain geometry while maintaining the ability to use a factory spindle. The lower a-arms feature tough tubular construction with polyurethane spring isolators for ride comfort and greaseable UMI-manufactured Delrin bushings for ultimate handling, smooth bind-free suspension motion and a sporty ride. The 0.5″ taller-than-stock lower ball joint lowers the front of the car 1/2″, reduces factory bump steer and adds spindle height. The ball joint mount is angled slightly from stock to permit usage with lowered vehicles and the design offers additional tire clearance. Delrin bushings maintain alignment with precision while providing the ultimate in friction free movement. The tubular upper a-arms are assembled with smooth operating, race quality rod ends as well as UMI-built billet chromoly cross shafts. They feature a relocated mounting pad to increase caster and are loaded with 0.9″ taller upper ball joints to improve camber performance. In most cases, no shims will be required (depending on parts combination and chassis straightness). 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 ultra tough red or black powder coat finish guarantees your performance parts stay beautiful on your street car, drag car, autocrosser or Pro-Touring machine. The P/N 403256-3 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. These a-arms offer a serious performance increase at a very reasonable cost. UMI Performance a-arm kit P/N 403256-3 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.

Features:

• Pro Tour ready. Suitable for competition use. Superior performance.
• New premium 0.9″ taller upper and 0.5″ taller lower ball joints for improved camber curve, lowered center of gravity and reduced bump steer
• Combination of 0.9”/0.5” taller ball joints provides the same benefit as a 1.4” taller spindle
• Relocated upper ball joint mounting pad for improved caster & better steering feel
• Lower a-arms are assembled with UMI manufactured greaseable & fluted CNC machined zero deflection Delrin bushings for ultimate smooth suspension action
• Upper a-arms feature race quality rod ends and are adjustable to reduce the need for shims
• 4140 chromoly cross shafts, CNC machined & zinc plated
• CNC machined ball joint holders and tubing radiuses
• TIG welded DOM tubing for superior strength and clean looks
• Polyurethane bump stops, polyurethane spring isolators & new premium ball joints installed
• Durable glossy red or black powder coat finish
• Fits factory spindles, drop spindles & works with factory springs, lowering springs and coilover kits
• Package includes recommended alignment specs & detailed installation instructions
• Simply bolt-on & go
• This kit is intended for use only with lowered cars. The upper a-arm bump stop is not compatible with raised vehicles.
• Contact us for other ball joint options. These arms work nicely with other tall spindles and proper ball joint selection.
• Designed and manufactured with pride in Philipsburg, PA – USA