View our Specials! Coupon Code: SaveIn2026
Shop GMC UMI Performance Suspension with free shipping to the Continental US 48 States.
 $62.69
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 $329.99
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 OUT OF STOCK UMI Performance Coilover Kits 4057-225UMI Performance 64-72 GM A-Body Rear Coilover Kit (225LB Spring Rate) $1,149.84
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OUT OF STOCK UMI Performance Coilover Kits 4069-1UMI 64-72 GM A-Body Coil Over Conversion Brackets Kit -2in to -3in Ride Height - 175lb Spring Rate $1,235.81
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OUT OF STOCK UMI Performance Coilover Kits 4069-5UMI 64-72 GM A-Body Coil Over Conversion Brackets Kit -1in to +1in Ride Height - 225lb Spring Rate $1,235.81
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OUT OF STOCK UMI Performance Coilover Kits 4069-3UMI 64-72 GM A-Body Coil Over Conversion Brackets Kit -2in to -3in Ride Height - 250lb Spring Rate $1,235.81
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OUT OF STOCK UMI Performance Coilover Kits 4069-6UMI 64-72 GM A-Body Coil Over Conversion Brackets Kit -1in to +1in Ride Height - 250lb Spring Rate $1,235.81
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OUT OF STOCK UMI Performance Coilover Kits 4069-4UMI 64-72 GM A-Body Coil Over Conversion Brackets Kit -1in to +1in Ride Height - 175lb Spring Rate $1,235.81
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OUT OF STOCK UMI Performance Coilover Kits 4069-2UMI 64-72 GM A-Body Coil Over Conversion Brackets Kit -2in to -3in Ride Height - 225lb Spring Rate $1,235.81
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 IN STOCK UMI Performance Lower Control Arms 4015-BUMI Performance 64-72 GM A-Body Tubular Lower Control Arms $234.84
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 IN STOCK UMI Performance Sway Bars 403534-RUMI Performance 64-72 GM A-Body Solid Front and Rear Sway Bar Kit $419.99
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 IN STOCK UMI Performance Lower Control Arms 4016-RUMI Performance 68-72 GM A-Body Tubular Non-Adjustable Upper Control Arms $160.04
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IN STOCK UMI Performance Lower Control Arms 3015-RUMI Performance 78-88 GM G-Body Tubular Non-Adjustable Lower Control Arms $234.84
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 IN STOCK UMI Performance Lowering Springs 3051UMI Performance 78-88 G-Body Lowering Spring Kit 2in Lowering $319.99
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 IN STOCK UMI Performance Sway Bars 4034-RUMI Performance 64-72 GM A-Body 1in Solid CrMo Rear Sway Bar $178.74
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 IN STOCK UMI Performance Sway Bars 4035-RUMI Performance 64-77 A-Body 70-81 F-Body GM Front Sway Bar 1-1/4in Solid $262.89
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 IN STOCK UMI Performance Lower Control Arms 4016-BUMI Performance 68-72 GM A-Body Tubular Non-Adjustable Upper Control Arms $160.04
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 IN STOCK UMI Performance Sway Bars 4034-BUMI Performance 64-72 GM A-Body 1in Solid CrMo Rear Sway Bar $178.74
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IN STOCK - LOW UMI Performance Lower Control Arms 3031-BUMI Performance 82-92 F-Body 78-88 G-Body S10 Tubular Front Lower A-Arms Poly $729.99
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