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UMI Performance

1970 BUICK GS 455 UMI Performance Parts and Accessories

Showing In Stock Items. Show All 164 Items.

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Results 1 - 25 of 70

UMI Performance Front Sway Bars 4035-B

Made in the USA UMI Performance Front Sway Bars 4035-B

UMI Performance Front Sway Bars 4035-B

Sway Bar, Front, Steel, Black Powdercoated, Solid, 32mm Diameter, Buick, Chevy, Oldsmobile, Pontiac, Each, Kit

Part Number: UPI-4035-B

4.89 out of 5 stars ( 44 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Rear Adjustable Upper and Lower Control Arm Kits 401417-B

Made in the USA UMI Performance Rear Adjustable Upper and Lower Control Arm Kits 401417-B

UMI Performance Rear Adjustable Upper and Lower Control Arm Kits 401417-B

Control Arms, Tubular, Rear, Upper/Lower, Steel, Black Powdercoated, Chevy, Buick, Oldsmobile, Pontiac, Kit

Part Number: UPI-401417-B

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Stock Height Springs 4049

Made in the USA UMI Performance Stock Height Springs 4049

UMI Performance Stock Height Springs 4049

Stock Height Springs, Coil, Buick, Chevrolet, Oldsmobile, Pontiac, Front/Rear, Set of 4

Part Number: UPI-4049

3.83 out of 5 stars ( 12 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Front and Rear Sway Bar Kits 403534-B

Made in the USA UMI Performance Front and Rear Sway Bar Kits 403534-B

UMI Performance Front and Rear Sway Bar Kits 403534-B

Sway Bars, Front/Rear, Steel, Black Powdercoated, Solid, 32mm, 25mm Dia., Buick, Chevy, Oldsmobile, Pontiac

Part Number: UPI-403534-B

4.39 out of 5 stars ( 18 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Solid Rear Sway Bars 4034-B

Made in the USA UMI Performance Solid Rear Sway Bars 4034-B

UMI Performance Solid Rear Sway Bars 4034-B

Sway Bar, Rear, Steel, Black Powdercoated, 1 in. Diameter, Buick, Chevy, Oldsmobile, Pontiac, Each, Kit

Part Number: UPI-4034-B

4.73 out of 5 stars ( 37 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Rear Non-Adjustable Upper and Lower Control Arm Kits 401516-B

Made in the USA UMI Performance Rear Non-Adjustable Upper and Lower Control Arm Kits 401516-B

UMI Performance Rear Non-Adjustable Upper and Lower Control Arm Kits 401516-B

Control Arms, Tubular, Rear, Upper/Lower, Steel, Black Powdercoated, Chevy, Buick, Oldsmobile, Pontiac, Kit

Part Number: UPI-401516-B

4.92 out of 5 stars ( 24 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Stage 2.5 Handling Kits ABF804-1-B

Made in the USA UMI Performance Stage 2.5 Handling Kits ABF804-1-B

UMI Performance Stage 2.5 Handling Kits ABF804-1-B

Suspension Handling Package, Stage 2.5, Black Powdercoated, Buick, Chevrolet, Oldsmobile, Pontiac, Kit

Part Number: UPI-ABF804-1-B

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Control Arm Reinforcement Brace Kits 4028-B

Made in the USA UMI Performance Control Arm Reinforcement Brace Kits 4028-B

UMI Performance Control Arm Reinforcement Brace Kits 4028-B

Control Arm Mount Braces, Bolt-On, Adjustable Steel, Black Powdercoated, Buick, Chevy, Oldsmobile, Pontiac, Pair

Part Number: UPI-4028-B

4.86 out of 5 stars ( 14 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Solid Rear Sway Bars 4034-R

Made in the USA UMI Performance Solid Rear Sway Bars 4034-R

UMI Performance Solid Rear Sway Bars 4034-R

Sway Bar, Rear, Steel, Red Powdercoated, 1 in. Diameter, Buick, Chevy, Oldsmobile, Pontiac, Each, Kit

Part Number: UPI-4034-R

4.77 out of 5 stars ( 26 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Front Sway Bars 4035-R

Made in the USA UMI Performance Front Sway Bars 4035-R

UMI Performance Front Sway Bars 4035-R

Sway Bar, Front, Steel, Red Powdercoated, Solid, 32mm Diameter, Buick, Chevy, Oldsmobile, Pontiac, Each, Kit

Part Number: UPI-4035-R

4.53 out of 5 stars ( 17 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Front and Rear Sway Bar Kits 403534-R

Made in the USA UMI Performance Front and Rear Sway Bar Kits 403534-R

UMI Performance Front and Rear Sway Bar Kits 403534-R

Sway Bars, Front/Rear, Steel, Red Powdercoated, Solid, 32mm, 25mm Dia., Buick, Chevy, Oldsmobile, Pontiac

Part Number: UPI-403534-R

4.7 out of 5 stars ( 27 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Shock Tower Braces 4058-B

Made in the USA UMI Performance Shock Tower Braces 4058-B

UMI Performance Shock Tower Braces 4058-B

Shock and Strut Braces, Shock Tower Braces, Steel, Black Powdercoated, Rear Upper, Buick, Chevrolet, Oldsmobile, Pontiac, Each

Part Number: UPI-4058-B

4.89 out of 5 stars ( 19 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Front Bump Steer Adjuster Kits 4061

Made in the USA UMI Performance Front Bump Steer Adjuster Kits 4061

UMI Performance Front Bump Steer Adjuster Kits 4061

Bump Steer Kit, Adjustable, Aluminum Tube, Black Anodized, Spacers, Tie Rod Ends, Chevrolet, Pontiac, Buick, Oldsmobile, Kit

Part Number: UPI-4061

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Rear Adjustable Upper Control Arms 4025-B

Made in the USA UMI Performance Rear Adjustable Upper Control Arms 4025-B

UMI Performance Rear Adjustable Upper Control Arms 4025-B

Control Arms, Tubular, Rear, Upper, Steel, Black, Buick, Chevy, Oldsmobile, Pontiac, Pair

Part Number: UPI-4025-B

5.0 out of 5 stars ( 12 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Rear Double Adjustable Lower Control Arms 4043-B

Made in the USA UMI Performance Rear Double Adjustable Lower Control Arms 4043-B

UMI Performance Rear Double Adjustable Lower Control Arms 4043-B

Control Arms, Double Adjustable, Rear Lower, Steel, Black Powdercoated, Buick, Chevy, GMC, Oldsmobile, Pontiac

Part Number: UPI-4043-B

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Lowering Springs 4050

Made in the USA UMI Performance Lowering Springs 4050

UMI Performance Lowering Springs 4050

Lowering Springs, Front and Rear, 1 in. Lowering, Black Powdercoated, Buick, Chevy, Oldsmobile, Pontiac, Set

Part Number: UPI-4050

4.14 out of 5 stars ( 7 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Front Sway Bars 4067-B

Made in the USA UMI Performance Front Sway Bars 4067-B

UMI Performance Front Sway Bars 4067-B

Sway Bars, Front, Solid, Steel, Black Powdercoated, 1.313 in. Diameter, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Kit

Part Number: UPI-4067-B

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance A-Body Frame Rail Braces 2654-B

Made in the USA UMI Performance A-Body Frame Rail Braces 2654-B

UMI Performance A-Body Frame Rail Braces 2654-B

Frame Rail Brace, Steel, Black Powdercoated, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: UPI-2654-B

5.0 out of 5 stars ( 14 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Rear Non-Adjustable Lower Control Arms 4015-B

Made in the USA UMI Performance Rear Non-Adjustable Lower Control Arms 4015-B

UMI Performance Rear Non-Adjustable Lower Control Arms 4015-B

Control Arms, Tubular, Rear, Lower, Steel, Black Powdercoated, Chevy, Buick, Oldsmobile, Pontiac, Kit

Part Number: UPI-4015-B

4.94 out of 5 stars ( 18 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Replacement Control Arm Bolts 4002

Made in the USA UMI Performance Replacement Control Arm Bolts 4002

UMI Performance Replacement Control Arm Bolts 4002

Control Arm Bolts, Rear Upper/Lower, Lock Nuts, Kit

Part Number: UPI-4002

4.52 out of 5 stars ( 25 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Shock Tower Braces 4058-R

Made in the USA UMI Performance Shock Tower Braces 4058-R

UMI Performance Shock Tower Braces 4058-R

Shock and Strut Braces, Shock Tower Braces, Steel, Red Powdercoated, Rear Upper, Buick, Chevrolet, Oldsmobile, Pontiac, Each

Part Number: UPI-4058-R

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Rear Non-Adjustable Upper and Lower Control Arm Kits 401516-R

Made in the USA UMI Performance Rear Non-Adjustable Upper and Lower Control Arm Kits 401516-R

UMI Performance Rear Non-Adjustable Upper and Lower Control Arm Kits 401516-R

Control Arms, Tubular, Rear, Upper/Lower, Steel, Red Powdercoated, Chevy, Buick, Oldsmobile, Pontiac, Kit

Part Number: UPI-401516-R

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Roto-Joint Rear-End Housing Bushings 2999

Made in the USA UMI Performance Roto-Joint Rear-End Housing Bushings 2999

UMI Performance Roto-Joint Rear-End Housing Bushings 2999

Bushings, Replacement, Differential Position, Billet Aluminum/Steel, Buick, Chevy, Oldsmobile, Pontiac, Kit

Part Number: UPI-2999

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Rear Double Adjustable Lower Control Arms 4027-B

Made in the USA UMI Performance Rear Double Adjustable Lower Control Arms 4027-B

UMI Performance Rear Double Adjustable Lower Control Arms 4027-B

Control Arms, Tubular, Rear, Lower, Steel, Black Powdercoated, Chevy, Buick, Oldsmobile, Pontiac, Pair

Part Number: UPI-4027-B

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

UMI Performance Replacement Control Arm Bolts 4004

Made in the USA UMI Performance Replacement Control Arm Bolts 4004

UMI Performance Replacement Control Arm Bolts 4004

Control Arm Bolts, Hex Nuts, Buick, Chevy, Oldsmobile, Pontiac, Kit

Part Number: UPI-4004

3.81 out of 5 stars ( 16 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

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