Products

UMI's rear weight jacks provide ride height adjustment and excellent handling for your 3rd or 4th Gen GM F-Body. The kit includes custom wound prem...

UMI's rear weight jacks provide ride height adjustment and excellent handling for your 3rd or 4th Gen GM F-Body. The kit includes custom wound prem...

The UMI Performance weight jack kit for 1982-1992 GM F-Body is designed to give your classic muscle car a firm ride geared toward auto-x and road r...

The UMI Performance weight jack kit for 1982-1992 GM F-Body is designed to give your classic muscle car a firm ride geared toward auto-x and road r...

The UMI Performance weight jack kit for 1982-1992 Camaro and Firebird is designed to give your daily driver a medium-firm ride worthy of corner car...

The UMI Performance weight jack kit for 1982-1992 Camaro and Firebird is designed to give your daily driver a medium-firm ride worthy of corner car...

UMI’s performance lowering springs are built to lower the 3rd Gen approx. 1” - 1.5” and increase the spring rates for a crisp handling experi...

UMI’s P/N 2405 spring perch kit is used as an upper spring mount in conjunction with our 2400 series k-member. The 2405 spring perch kit is an ec...

UMI’s P/N 2405 spring perch kit is used as an upper spring mount in conjunction with our 2400 series k-member. The 2405 spring perch kit is an ec...

UMI’s performance lowering springs are built to lower the 4th Gen approx. 1.25” - 1.5” (1.25” front and 1.5” rear designed to level the c...

UMI’s performance lowering springs are built to lower the 4th Gen front end approx. 1.25” and increase the spring rates for a crisp handling ex...

UMI’s performance lowering springs are built to lower the 4th Gen rear approx. 1.5” and increase the spring rates for a crisp handling experien...

UMI’s rear spring spacers may be just the ticket to achieve that perfect stance or prevent tire rub. UMI’s zinc coated, laser cut mild steel ...

UMI’s rear spring spacers may be just the ticket to achieve that perfect stance or prevent tire rub. UMI’s zinc coated, laser cut mild steel ...

UMI’s rear spring spacers may be just the ticket to achieve that perfect stance or prevent tire rub. UMI’s zinc coated, laser cut mild steel ...

Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. By lowering the vehicles centre ...

Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. By lowering the vehicles centre ...

Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. By lowering the vehicles centre ...

Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. By lowering the vehicles centre ...

Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. By lowering the vehicles centre ...

Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. By lowering the vehicles centre ...

Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. This kit contains 3.4kg/mm (190l...

Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. By lowering the vehicles centre ...

Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. This kit contains 8.7kg/mm (491l...