QA1 GM Pro Front Coil-Over System, Double Adj, 10in x 450lbs/in, Select 1958-1996 GM, Ford, Mercury - GD507-10450C

Fits select 1958-1996 Chevrolet (Impala, Caprice, Bel Air), Ford (Galaxie), Mercury (Monterey, Marauder, Meteor), and Edsel models.

The QA1 GM Pro Coil System offers independent control over compression and rebound damping, allowing you to fine-tune your suspension for specific driving conditions, from street performance to competitive track use. These coil-overs feature a fully threaded billet aluminum body that provides up to 2 inches of ride height adjustment, enabling you to dial in the perfect stance and improve weight balance for better cornering and handling.

This system includes American-made high travel springs (10 inch length, 450 lbs/in rate). These springs utilize a smaller wire diameter and fewer coils than standard springs to reduce unsprung weight and provide more travel before coil bind. Designed for a direct bolt-in installation, this kit works seamlessly with factory mounts or upgraded tubular control arms.

• Manufacturer Part Number: GD507-10450C
• Independent double-adjustable valving (compression and rebound)
• Lightweight 6061-T6 billet aluminum shock bodies
• 10" x 450 lbs/in high travel silver powder-coated springs
• Up to 2 inches of ride height adjustment
• 100% dyno tested and serialized
• Fully serviceable and rebuildable design
• Made in the USA
• Includes high-quality mounting hardware