QA1 Double Adjustable Rear Coil-Over Conversion Kit; 130 lb./in. Spring Rate (79-04 Mustang, Excluding 99-04 Cobra)Find parts that fit my vehicle

Performance Suspension Upgrade. The QA1 Double Adjustable Rear Coil-over Conversion Kit with 130 lb/in spring rate enhances handling and ride quality by replacing the factory rear suspension with adjustable coil-over shocks and springs. It allows precise tuning for street and track conditions, enabling independent adjustment of rebound and compression settings for optimal performance and comfort. This kit also provides ride height adjustability to achieve the desired stance.

Construction and Appearance. This system features a fully threaded aluminum shock body for lightweight durability and corrosion resistance. The coil springs are matched with the shocks and engineered for consistent 130 lb/in spring rate performance. Mounting brackets are precision-engineered for a seamless fit, and all components have a clean, functional finish designed to retain appearance through years of use.

Installation. Installation is straightforward with a bolt-in design that requires no drilling or modification to the vehicle’s chassis. The kit includes all necessary hardware and specially designed brackets to ensure an easy and trouble-free assembly for professional or experienced DIY installers.

Warranty. This product is supported by a best-in-class lifetime warranty upon registration, providing peace of mind for long-term ownership. Application. This rear coil shock system fits 1979-2004 Ford Mustang models and excludes 1999-2004 Mustangs equipped with Cobra IRS rear suspension.

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