QA1 GM Pro Front Coil-Over System, Double Adjustable, 10in x 500lbs/in, Flat Large, Aluminum, 1958-1996 GM/Ford/Mercury

Fits select 1958-1996 Chevrolet, Ford, Mercury, and Edsel full-size vehicles, including Bel Air, Biscayne, Caprice, Impala, Galaxie, Monterey, and Marauder.

Achieve professional-grade handling and a customized stance with the QA1 GM Pro Front Coil-Over System. This double-adjustable kit provides independent control over both rebound and compression valving, allowing you to fine-tune your suspension for specific driving conditions, from street performance to competitive autocross or drag racing. The billet aluminum shocks feature a fully threaded body for up to 2 inches of ride height adjustment, enabling precise weight balancing and the perfect vehicle profile.

The system includes QA1 high-travel springs, manufactured in the USA from lightweight wire with a reduced coil count. This design increases suspension travel and reduces unsprung weight for faster reaction times and improved tire contact. These shocks are 100% dyno-tested and serialized to ensure consistent performance out of the box. Designed as a direct bolt-in solution, this system integrates seamlessly with factory mounting points or upgraded QA1 tubular control arms.

• Manufacturer Part Number: GD507-10500C
• Adjustment Type: Double Adjustable (Independent Compression and Rebound)
• Spring Rate: 500 lbs/in
• Spring Length: 10 inches
• Material: Lightweight Billet Aluminum
• Mounting: Flat Large
• Adjustment Range: Up to 2" Ride Height Adjustment
• Serviceability: Fully Rebuildable and Serviceable
• Warranty: Limited Lifetime Warranty
• Origin: Made in the USA