UMI Performance

The UMI P/N 2999 adds the finishing touch to allow full articulation of the GM 4-link rear suspension. By using 2999 and either Roto-Joints or rod ends in the other six locations, your 4-link will...

UMI Performance 67 GM A-Body Handling Package 1in Lowering- Stage 1.5

UMI Performance 67 GM A-Body Handling Package 1in Lowering- Stage 1.5

UMI Performance 67 GM A-Body Handling Package 2in Lowering- Stage 1.5

UMI Performance 67 GM A-Body Handling Package 2in Lowering- Stage 1.5

UMI Performance 67-69 GM F-Body Viking Double Adjustable Rear Shock

Front Spring Rate Options:250lb- 11” tall springs for drag race only. Serious lightening required.350lb- Small block cruise or drag race with lightening required.450lb- Small block cruise, big block...

Front Spring Rate Options:250lb- 11” tall springs for drag race only. Serious lightening required.350lb- Small block cruise or drag race with lightening required.450lb- Small block cruise, big block...

Front Spring Rate Options:250lb- 11” tall springs for drag race only. Serious lightening required.350lb- Small block cruise or drag race with lightening required.450lb- Small block cruise, big block...

Front Spring Rate Options:250lb- 11” tall springs for drag race only. Serious lightening required.350lb- Small block cruise or drag race with lightening required.450lb- Small block cruise, big block...

Front Spring Rate Options:250lb- 11” tall springs for drag race only. Serious lightening required.350lb- Small block cruise or drag race with lightening required.450lb- Small block cruise, big block...

Front Spring Rate Options:250lb- 11” tall springs for drag race only. Serious lightening required.350lb- Small block cruise or drag race with lightening required.450lb- Small block cruise, big block...

Front Spring Rate Options:250lb- 11” tall springs for drag race only. Serious lightening required.350lb- Small block cruise or drag race with lightening required.450lb- Small block cruise, big block...

- On-Car Adjustability using a 4140 Heat Treated Adjuster - 4140 Chrome-Moly Tube Adaptors - TIG Welded Construction - Grease-able Energy Suspension Polyurethane Bushings - Brilliant Durable...

- On-Car Adjustability using a 4140 Heat Treated Adjuster - 4140 Chrome-Moly Tube Adaptors - TIG Welded Construction - Grease-able Energy Suspension Polyurethane Bushings - Brilliant Durable...