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🇨🇦 Proudly Canadian! All orders ship from Canada. No Tariffs. No hidden fees. No surprises.

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UMI Performance 70-81 GM F-Body Rear 2in Leaf Springs Shackle Kit - Poly - 262025

SKU: SKU: UMI262025

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This item is classified as Oversized and may incur an additional handling fee at checkout depending on your shipping location. No additional fees apply for pickup orders.
Oversize Debug
Tier code
Tier priority
Tier max weight (lb)
Tier max girth (in)
Product weight (lb)
L × W × H (in)
Girth L + 2×(W+H)
Requires acktrue

UMI’s leaf spring and poly shackle kit is a complete, high performance solution to lower the rear of your 2nd Gen. These springs feature high quality US Steel, multi-leaf construction and lower the car an average of 2" to 2-½" below stock ride height. The springs bolt directly into the stock location with no modifications required. The front rubber bushing is pre-installed for convenience. The poly shackle kit for the rear of the spring replaces the factory bushing with a heavy duty, high performance poly bushing and shackle assembly. No additional components required. 100% Made In USA.

Installation Instructions
Installation Instructions

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