View our Specials! Coupon Code: SaveIn2026
Looking for aftermarket parts to modify or upgrade your 1988 Pontiac Grand Prix? At Tunersports.com we carry a huge selection of the top name brand performance parts and accessories.
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 IN STOCK - LOW UMI Performance Lowering Springs 4050RUMI Performance 64-72 GM A-Body 78-88 G-Body 1in Lowering Spring Rear $197.44
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 IN STOCK - LOW UMI Performance Control Arm Kits 302717-BUMI Performance 78-88 GM G-Body Double Adjustable Upper & Lower Rear Control Arms Kit $619.99
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 IN STOCK - LOW UMI Performance Hardware Kits 3013UMI Performance 78-88 GM G-Body Upper & Lower A-Arm Mounting Hardware $51.47
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 IN STOCK - LOW UMI Performance Hardware Kits 3002UMI Performance 78-88 GM Complete Rear Control Arm Bolt Upgrade Kit $51.47
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 IN STOCK UMI Performance Hardware Kits 3001UMI Performance 78-02 GM Rear Control Arm Bolt Upgrade Kit $41.18
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 IN STOCK - LOW UMI Performance Frame Braces 3028-RUMI Performance 78-88 GM G-Body Control Arm Reinforcements/Frame Braces $169.39
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 IN STOCK UMI Performance Frame Braces 3028-BUMI Performance 78-88 GM G-Body Control Arm Reinforcements/Frame Braces $169.39
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 IN STOCK UMI Performance Diff Mount Bushings 3000-RUMI Performance 65-87 GM Polyurethane Rear End Housing Replacement Bushings $72.04
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 IN STOCK UMI Performance Diff Mount Bushings 3000-BUMI Performance 65-87 GM Polyurethane Rear End Housing Replacement Bushings $72.04
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IN STOCK UMI Performance Frame Braces 3028-BUMI Performance 78-88 GM G-Body Control Arm Reinforcements/Frame Braces $169.39
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 IN STOCK UMI Performance Lower Control Arms 3016-RUMI Performance 78-88 GM G-Body Tubular Non-Adjustable Upper Control Arms $160.04
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IN STOCK - LOW UMI Performance Control Arm Kits 302717-BUMI Performance 78-88 GM G-Body Double Adjustable Upper & Lower Rear Control Arms Kit $619.99
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 $494.10
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IN STOCK - LOW UMI Performance Lowering Springs 4050RUMI Performance 64-72 GM A-Body 78-88 G-Body 1in Lowering Spring Rear $197.44
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IN STOCK - LOW UMI Performance Frame Braces 3028-RUMI Performance 78-88 GM G-Body Control Arm Reinforcements/Frame Braces $169.39
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