Car building can be tough. Choosing a handling kit doesn’t have to be. UMI’s shock/spring/sway bar kit dramatically improves the handling of the 4th Gen platform. UMI lowering springs...

Car building can be tough. Choosing a handling kit doesn’t have to be. UMI’s shock/spring/sway bar kit dramatically improves the handling of the 4th Gen platform. UMI lowering springs...

UMI’s complete handling and lowering kit features everything required to go fast, look great and optimize lowered suspension geometry. UMI lowering springs paired with Koni STR.T’s...

UMI's Delrin shackle kit works with UMI P/N 2620 rear leaf springs as well as other stock location leaf springs. The kit is a great choice for corner carving street and high performance use. Kit...

UMI's polyurethane shackle kit works with UMI P/N 2620 rear leaf springs as well as other stock location leaf springs. The kit is a great choice for street and performance use. Kit includes bushings...

UMI’s rear leaf spring is a high performance solution to lowering the rear of your 1970-1981 Camaro or Firebird. These springs feature high quality US Steel, multi-leaf construction and lower...

UMI's leaf spring installation kit works with UMI P/N 2620 leaf springs as well as other stock location leaf springs. The kit is a great choice for street and performance use. Kit includes high...

UMI’s leaf spring and Delrin shackle kit is a heavy duty, Made In USA solution to lowering the rear of your 2nd Gen. These springs feature high quality US Steel, multi-leaf construction and...

UMI’s leaf spring and poly shackle kit is a complete, high performance solution to lower the rear of your 2nd Gen. These springs feature high quality US Steel, multi-leaf construction and lower...

UMI’s 2nd Gen F-body lowering springs are wound from 5160 CrSi premium wire and feature a linear 600 lb/in rate. UMI’s front springs are stiffer than stock to provide increased...

UMI’s street front end kit includes everything to completely transform the front end of the 2nd Gen F-Body into a street friendly, corner capable, modern handling muscle car. The foundation is...

UMI’s street front end kit includes everything to completely transform the front end of the 2nd Gen F-Body into a street friendly, corner capable, modern handling muscle car. The foundation is...