1964-1972 GM A-Body Handling Package - Stage 3

UMI’s Stage 3 kit works to achieve great street manners combined with Pro-Touring handling capability. Up front you’ll find Delrin lower a-arm bushings for precise steering along with ½” taller upper ball joints to improve camber gain. Out back we include our popular Roto-Joints and an adjustable length upper control arm so the axle can articulate nicely after you’ve perfected the driveline angle. Sway bars are UMI’s tried and true 1-1/4” front and 1” rear for a great front to rear handling balance. Bilstein gas charged shocks control the entire package and provide great handling mixed with a comfortable ride. The kit is available in red or black powder coat and is 100% designed, tested, manufactured and raced out of our shop in Philipsburg, PA – USA.

Notes: An additional 1/4″ front end drop may occur on vehicles with full weight big block engines. Cars with lightweight LS engines may require spring trimming. You may safely trim the spring in 1/4 coil increments until desired ride height is achieved.

Key Features:

• Increased spindle height by 1/2” via tall upper ball joints for improved camber gain and a better contact patch. Works nicely in conjunction with lowering springs.
• Upper a-arms add caster for improved steering feel and straight line stability.
• Lower a-arms feature UMI-built Delrin bushings and accept standard springs or coilovers.
• 1.250” front sway bar for flat cornering, CNC bent from 4140. Balanced with 1” solid heat formed rear sway bar.
• Bilstein gas charged shocks.
• UMI springs feature ultra premium CrSi material with linear rates front and rear for consistent handling. (530 lb/in front, 130 lb/in rear).
• Rear trailing arms feature Poly and Roto-Joints as well as adjustable uppers for setting pinion angle and rear lateral location.
• Roto-Joints allow smooth articulation for improved handling and less bind.

UMI’s Stage 3 Handling Kit Includes:

• 4032 – Tubular lower a-arms with Delrin bushings.
• 4033-1 – Tubular upper a-arms with Delrin bushings & ½” taller ball joints.
• 4035 – Heavy duty 1-1/4” front sway bar with new bushings & endlinks.
• 4034 – Solid 1” heat treated rear sway bar.
• 4038 – Tubular rear lower control arms with Roto-Joint.
• 4039 – Adjustable rear upper control arms with Roto-Joints.
• 4029 – Tubular frame braces with hardware.
• 3000 – Replacement rear end housing bushings.
• 4004 – Front upper & lower Grade 8 hardware kit.
• 4001 – Rear control arm Grade 8 hardware kit.
• 4052 – 1” lowering springs, linear spring rates (530 lb/in front, 130 lb/in rear).
• Bilstein gas charged shocks.