QA1 GD501-10600A GM Pro-Coil Double Adjustable Aluminum Coilover System 10in 600lb/in

The QA1 GD501-10600A GM Pro-Coil Double Adjustable Front Coilover System delivers professional-grade suspension performance for high-performance GM street and strip builds. This complete front coilover kit pairs lightweight billet aluminum double-adjustable shocks with specially designed 10-inch, 600 lb/in tapered pigtail springs, giving you full control over both ride height and damping.

Double-Adjustable Valving: Unlike single-adjustment designs, the GD501 platform features independent compression and rebound adjustment. Each shock offers 18 positions of independent tuning for compression and rebound damping, allowing precise setup for drag racing, autocross, road course, or everyday street driving—all without removing the shocks from the vehicle.

Key Features:

• Double adjustable — independent compression and rebound valving, 18 positions each
• Lightweight billet aluminum shock bodies for reduced unsprung weight
• Fully threaded body for easy, tool-free ride height adjustment
• 10-inch, 600 lb/in tapered pigtail springs — USA-made, high-travel design with fewer coils and smaller wire diameter for increased suspension travel
• Bolt-in installation — compatible with OE stamped steel control arms and QA1 tubular control arms; no cutting or welding required
• 100% dyno tested and serialized at the factory
• Serviceable and rebuildable by QA1 Authorized Service Centers
• Sold as a pair with all necessary mounting hardware included
• Made in the USA

QA1's Pro-Coil high-travel springs are engineered with a smaller wire diameter and fewer coils than conventional springs of the same rate, resulting in more usable suspension travel and reduced unsprung mass for improved handling response. The fully threaded shock body allows precise ride height and corner-weight tuning to dial in the perfect stance and balance.

Suitable for drag racing, street performance, autocross, road course racing, and street rod applications. Kit includes two (2) GD501 double-adjustable aluminum coilover shocks, two (2) 10HTSP600 tapered pigtail springs, and all required mounting hardware.