306201 – 1978-1988 GM G-Body Handling Kit, Corner Max, Race/Street Handling

UMI’s Corner Max front end kits are a comprehensive system designed to enhance corner carving performance. This system includes geometry corrected a-arms with tall ball joints, higher rate springs, UMI rebound adjustable monotube shocks, a heavy duty sway bar, and a bump steer kit. The foundation of the kit features coilover-only lower a-arms with caster improvement, tall ball joints, and the ability to easily remove the spring and shock without disassembling the spindle. The upper a-arm is equipped with rod ends for smooth operation and adjustable settings without shims.

The Corner Max kit also includes a 1-¼” sway bar upgrade with fabricated end links to reduce body roll and improve transitions. Racing coilover springs paired with UMI’s rebound adjustable coilover monotube shocks provide optimal handling, and fine tuning is made possible with the included bump steer kit. This kit is designed to maximize the performance of the stock GM clip with a simple bolt-on installation.

UMI Performance is proud to fabricate and race all parts in the USA, with a proven track record of success on the UMI Green Machine race car. The kit offers exceptional handling at a 1 to 2-1/2” lowering range, utilizing the factory GM spindle and allowing for up to 10 degrees static caster adjustment without moving the spindle pin. With up to 1.2 degrees per inch camber gain, ¾” taller lower and standard upper ball joints, and a quick change system for easy shock and spring adjustments at the track, the Corner Max kit delivers race-proven performance.

Additionally, the kit includes an 850 lb/in spring rate, rebound adjustable monotube shocks with road race valving and 40 clicks of adjustment, and a 1-¼” solid sway bar with swivel end links for proper balance. Thrust bearings and an adjusting wrench are also included for easy height changes, and the kit has been tested on UMI’s 1979 Monte Carlo test car. All suspension components are meticulously designed and manufactured in the USA.