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UMI Performance

UMI Performance Stage 1.5 Handling Kits

Not Yet Reviewed

UMI Performance Stage 1.5 handling kits are the simple way to dramatically improve the handling and performance of your muscle car. Beginning with their original St
UMI Performance Stage 1.5 handling kits are the simple way to dramatically improve the handling and performance of your muscle car. Beginning with their original Stage 1 kit, UMI takes it up a level by adding Koni off-car rebound adjustable shocks. The Stage 1.5 kits also tune up the camber curve by including 1/2 in. taller than stock upper ball joints that easily bolt to factory and most aftermarket A-arms. The high performance lowering springs feature medium stiffness to control body movement and reduce floating while still providing a comfortable, sporty ride. Stage 1.5 kits balance out with UMI's tried-and-true 1
UMI Performance Stage 1.5 handling kits are the simple way to dramatically improve the handling and performance of your muscle car. Beginning with their original Stage 1 kit, UMI takes it up a level by adding Koni off-car rebound adjustable shocks. The Stage 1.5 kits also tune up the camber curve by including 1/2 in. taller than stock upper ball joints that easily bolt to factory and most aftermarket A-arms. The high performance lowering springs feature medium stiffness to control body movement and reduce floating while still providing a comfortable, sporty ride. Stage 1.5 kits balance out with UMI's tried-and-true 1.250 in. front sway bar and 1 in. rear sway bars reducing body roll and providing excellent chassis balance when handling at the limit.

Key points:

* Suitable for corner carving, auto-x, and road racing while still being street friendly
* 1 1/4 in. Chromoly front and 1 in. heat-treated rear sway bars help control body roll
* 600 lb./in. linear front, 130 lb./in. linear rear lowering springs ensure crisp handling and a sporty ride
* 1/2 in. taller than stock upper ball joint to improve camber curve
* Koni off-car rebound adjustable shocks
* Stage 1.5 can be upgraded to Stage 2 or 3 without duplicating parts


All the results found for this search are Not In Stock.

Results 1 - 12 of 12

UMI Performance Stage 1.5 Handling Kits GBF015-1-R

Made in the USA UMI Performance Stage 1.5 Handling Kits GBF015-1-R

UMI Performance Stage 1.5 Handling Kits GBF015-1-R

Suspension Handling Package, Stage 1.5, Red Powdercoated, 1 in. Drop, Buick, Chevrolet, Oldsmobile, Pontiac, Kit

Part Number: UPI-GBF015-1-R

Not Yet Reviewed

Estimated Ship Date: Jun 17, 2026 if ordered today

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Estimated Ship Date: Jun 17, 2026 if ordered today

UMI Performance Stage 1.5 Handling Kits ABF815-2-R

Made in the USA UMI Performance Stage 1.5 Handling Kits ABF815-2-R

UMI Performance Stage 1.5 Handling Kits ABF815-2-R

GM A-Body Handling Package, GM A-Body Handling Package

Part Number: UPI-ABF815-2-R

Not Yet Reviewed

Estimated Ship Date: Jun 10, 2026 if ordered today

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Estimated Ship Date: Jun 10, 2026 if ordered today

UMI Performance Stage 1.5 Handling Kits ABF815-2-B

Made in the USA UMI Performance Stage 1.5 Handling Kits ABF815-2-B

UMI Performance Stage 1.5 Handling Kits ABF815-2-B

GM A-Body Handling Package, GM A-Body Handling Package

Part Number: UPI-ABF815-2-B

Not Yet Reviewed

Estimated Ship Date: Jun 10, 2026 if ordered today

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Estimated Ship Date: Jun 10, 2026 if ordered today

UMI Performance Stage 1.5 Handling Kits GBF015-1-B

Made in the USA UMI Performance Stage 1.5 Handling Kits GBF015-1-B

UMI Performance Stage 1.5 Handling Kits GBF015-1-B

Suspension Handling Package, Stage 1.5, Black Powdercoated, 1 in. Drop, Buick, Chevrolet, Oldsmobile, Pontiac, Kit

Part Number: UPI-GBF015-1-B

Not Yet Reviewed

Estimated Ship Date: Jun 17, 2026 if ordered today

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Estimated Ship Date: Jun 17, 2026 if ordered today

UMI Performance Stage 1.5 Handling Kits ABF415-2-B

Made in the USA UMI Performance Stage 1.5 Handling Kits ABF415-2-B

UMI Performance Stage 1.5 Handling Kits ABF415-2-B

Handling Package

Part Number: UPI-ABF415-2-B

Not Yet Reviewed

Estimated Ship Date: Jun 17, 2026 if ordered today

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Estimated Ship Date: Jun 17, 2026 if ordered today

UMI Performance Stage 1.5 Handling Kits GBF015-2-R

Made in the USA UMI Performance Stage 1.5 Handling Kits GBF015-2-R

UMI Performance Stage 1.5 Handling Kits GBF015-2-R

Suspension Handling Package, Stage 1.5, Red Powdercoated, 2 in. Drop, Buick, Chevrolet, Oldsmobile, Pontiac, Kit

Part Number: UPI-GBF015-2-R

Not Yet Reviewed

Estimated Ship Date: Jun 17, 2026 if ordered today

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Estimated Ship Date: Jun 17, 2026 if ordered today

UMI Performance Stage 1.5 Handling Kits ABF415-1-R

Made in the USA UMI Performance Stage 1.5 Handling Kits ABF415-1-R

UMI Performance Stage 1.5 Handling Kits ABF415-1-R

Handling Package

Part Number: UPI-ABF415-1-R

Not Yet Reviewed

Estimated Ship Date: Jun 17, 2026 if ordered today

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Estimated Ship Date: Jun 17, 2026 if ordered today

UMI Performance Stage 1.5 Handling Kits ABF415-1-B

Made in the USA UMI Performance Stage 1.5 Handling Kits ABF415-1-B

UMI Performance Stage 1.5 Handling Kits ABF415-1-B

Handling Package

Part Number: UPI-ABF415-1-B

Not Yet Reviewed

Estimated Ship Date: Jun 17, 2026 if ordered today

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Estimated Ship Date: Jun 17, 2026 if ordered today

UMI Performance Stage 1.5 Handling Kits GBF015-2-B

Made in the USA UMI Performance Stage 1.5 Handling Kits GBF015-2-B

UMI Performance Stage 1.5 Handling Kits GBF015-2-B

Suspension Handling Package, Stage 1.5, Black Powdercoated, 2 in. Drop, Buick, Chevrolet, Oldsmobile, Pontiac, Kit

Part Number: UPI-GBF015-2-B

Not Yet Reviewed

Estimated Ship Date: Jun 17, 2026 if ordered today

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Estimated Ship Date: Jun 17, 2026 if ordered today

UMI Performance Stage 1.5 Handling Kits ABF415-2-R

Made in the USA UMI Performance Stage 1.5 Handling Kits ABF415-2-R

UMI Performance Stage 1.5 Handling Kits ABF415-2-R

Handling Package

Part Number: UPI-ABF415-2-R

Not Yet Reviewed

Estimated Ship Date: Jun 17, 2026 if ordered today

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Estimated Ship Date: Jun 17, 2026 if ordered today

UMI Performance Stage 1.5 Handling Kits ABF815-1-R

Made in the USA UMI Performance Stage 1.5 Handling Kits ABF815-1-R

UMI Performance Stage 1.5 Handling Kits ABF815-1-R

Suspension Handling Package, Stage 1.5, Red Powdercoated, 1-2 in. Drop, Buick, Chevrolet, Oldsmobile, Pontiac, Kit

Part Number: UPI-ABF815-1-R

Not Yet Reviewed

Estimated Ship Date: Jun 17, 2026 if ordered today

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Estimated Ship Date: Jun 17, 2026 if ordered today

UMI Performance Stage 1.5 Handling Kits ABF815-1-B

Made in the USA UMI Performance Stage 1.5 Handling Kits ABF815-1-B

UMI Performance Stage 1.5 Handling Kits ABF815-1-B

Handling Package

Part Number: UPI-ABF815-1-B

Not Yet Reviewed

Estimated Ship Date: Jun 17, 2026 if ordered today

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Estimated Ship Date: Jun 17, 2026 if ordered today

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