QA1 GM Pro Front Coil-Over System Single Adjustable 10in x 750lb/in Flat Large Aluminum - Select 1958-1996 Chevy/Ford

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

The QA1 GM Pro Coil System provides a direct bolt-in suspension upgrade for classic full-size platforms, offering precise control over ride height and valving. This system replaces the factory shock and spring with a billet aluminum coil-over assembly, allowing for up to 2 inches of ride height adjustment to dial in the perfect stance or optimize weight distribution. The single adjustable valving design features a single knob that simultaneously adjusts compression and rebound, making it easy to tune for street performance, drag racing, or autocross.

Each kit includes high-travel springs manufactured in the USA. These lightweight springs use fewer coils and a smaller wire diameter than standard springs to reduce unsprung weight and provide more suspension travel without coil bind. The shocks are 100% dyno tested and serialized to ensure consistent performance out of the box.

• Manufacturer Part Number: GS507-10750C
• Adjustment: Single adjustable (simultaneous compression and rebound)
• Spring Rate: 750 lbs/in
• Spring Length: 10 inches
• Shock Material: Lightweight Billet Aluminum
• Ride Height: Up to 2 inches of adjustment
• Mounting: Bolt-in installation; works with factory or QA1 control arms
• Serviceability: Rebuildable and serviceable by QA1 authorized centers
• Quantity: Sold in pairs
• Warranty: Limited Lifetime Warranty