QA1 GD501-10650C GM Pro-Coil Double Adjustable Aluminum Coilover Kit 650 lb/in Tapered Flat Spring

The QA1 GD501-10650C Pro-Coil System is a complete double-adjustable front coilover kit engineered for GM performance applications. Featuring QA1's renowned R-Series aluminum-bodied shocks, this kit delivers precise, tunable suspension performance for street and strip use.

The double-adjustable shock design allows independent tuning of both compression and rebound damping, giving drivers full control over handling characteristics without compromising ride quality. The lightweight aluminum shock bodies reduce unsprung weight for improved suspension response.

Kit Includes:

• (2) QA1 R-Series double-adjustable aluminum performance shocks
• (2) Chrome-plated, specially designed 650 lb/in tapered flat coilover springs
• All necessary mounting hardware for installation

Key Features:

• Double-adjustable damping — independent compression and rebound tuning
• Aluminum shock bodies — reduced unsprung weight for improved handling
• 650 lb/in spring rate — suited for performance street and competition applications
• Tapered flat large spring design — optimized load distribution and coilover fitment
• Chrome-plated springs — corrosion resistance and clean appearance
• Complete kit with all hardware included — no additional parts required for installation

The QA1 Pro-Coil system is a bolt-in performance upgrade that transforms front suspension dynamics for GM muscle cars, trucks, and performance vehicles, making it a top choice for autocross, road racing, and high-performance street driving.