UMI Performance 2625 Poly Leaf Spring Shackle Kit for 70-81 Chevy Camaro/Firebir

Vehicle Fitment

• 1970-1981 Chevy Camaro (Base, RS, SS, Z28, LT, Rally Sport) (5.0L V8, 5.7L V8)
• 1970-1981 Pontiac Firebird (Base, Esprit, Formula, Trans Am) (5.0L V8, 6.6L V8)

Features

• High-durometer polyurethane bushings for both leaf spring and chassis mounts
• Laser-cut steel shackles provide increased strength over factory components
• Gloss black powder-coated finish for corrosion resistance and clean appearance
• Improves rear suspension responsiveness and handling precision
• Reduces unwanted axle wrap and bushing deflection under load
• Direct-fit design requires no cutting, welding, or fabrication
• Compatible with stock springs or UMI 2620 performance lowering springs
• Proudly manufactured in the USA using domestic materials

Specifications

• Material: Polyurethane bushings, laser-cut mild steel shackles
• Finish: Durable gloss black powder coat
• Hardware: Grade 8 bolts, washers, and lock nuts included
• Fitment: Rear suspension leaf spring mount (GM F-body)
• Weight: Approx. 6 lbs total (kit)
• Vehicle Platform: GM F-body (1970-1981)
• Spring Compatibility: UMI 2620 or stock-style leaf springs
• Emissions: Not emissions-related; 50-state legal

Included Components

• 2x Laser-cut steel shackles (left and right)
• 4x Polyurethane bushings (2x spring eye, 2x chassis mount)
• 1x Grade 8 hardware kit (bolts, washers, nuts)

Product Description

The UMI Performance 2625 Polyurethane Leaf Spring Shackle Kit is a direct-fit upgrade for the rear suspension of 1970-1981 Chevy Camaro and Pontiac Firebird models equipped with leaf spring setups. Designed for use with both stock and UMI 2620 lowering springs, this kit replaces worn-out rubber bushings and weak factory shackles with high-strength polyurethane and laser-cut steel for improved performance and durability.

Engineered to reduce suspension flex and axle wrap under hard acceleration, the UMI 2625 improves vehicle stability and rear-end control without sacrificing ride quality. This kit is ideal for muscle car enthusiasts looking to enhance street or mild performance handling. Installation is straightforward and fully bolt-on with no modifications required. Made in the USA with premium materials, it's a dependable choice for restorations, restomods, or performance builds.