UMI Performance 1967 GM A-Body UMI Shock/Spring Kit, 1S Lowering

Part Number: UMISS203050

UMI Performance 1967 GM A-Body UMI Shock/Spring Kit, 1S Lowering

Part Number: UMISS203050

$745.94

In Stock

( Inventory updated: 06/06/2026 )

Estimated ship date: 2-3 business days

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1967 GM A-Body UMI Shock/Spring Kit, 1S Lowering

  • 1967 GM A-Body UMI Shock/Spring Kit, 1? Lowering
  • Big Block Engines: An additional 1/4? front end drop may occur on vehicles with full weight big block engines.
  • Comfortable yet performance oriented compression valving
  • Complete kit Made in the USA
  • Nitrogen charged monotube shock for great control
  • Premium CrSi US sourced wire
  • Ramped up rebound valving
  • Shocks feature race proven construction for durability
  • Springs feature 530 lb/in front rates and 130 lb/in linear rate
  • The UMI Performance spring and shock kit is designed to lower your car 1 inch while providing a huge improvement in handling and control. These kits feature our race quality lowering springs which provide a high performance foundation for your ride. Premium US sourced CrSi wire is wound into the correct rates for street cruising, Pro-Touring, corner carving or light drag use. The UMI Performance monotube shock features medium-firm compression valving and a ramped up rebound curve to properly control the UMI spring. The rebound valving also controls body roll when cornering and contributes to a high performance ride.

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UMI Performance

UMI Performance was founded in 2002 as a father/son business developing performance parts for GM and Ford products. They quickly began to focus on suspension upgrades for both older and late model muscle cars, and have become a leader in replacement and high-performance suspension components, from individual parts to entire kits.

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