Double Adjustable Front Pro-Coil Shock System

The QA1 GD401-10750C Front Pro Coil Shock System is engineered for muscle car enthusiasts seeking enhanced stance, ride quality, and performance. This double adjustable coilover system allows for independent tuning of both compression and rebound valving, providing a wide range of adjustability for street driving or track competition. The system offers 0 to -2 inches of ride height adjustability, enabling you to achieve the perfect stance by simply turning the spring seat nut. For drop beyond 2 inches, consider adding drop spindles. Constructed for optimal performance, the QA1 Pro-Coil kits utilize high-travel coil springs with a rate of 750lb/in, tailored to vehicle weight and driving style. The double adjustable coilovers are designed for easy access to their 18-position adjustment knob, located at the base of the shock, which can be reached by turning the steering wheel to full lock. Installation is straightforward, as these GM Pro-Coil Kits bolt in directly with Original Equipment (OE) stamped steel control arms or QA1 tubular control arms. Key features include up to 2 inches of ride height adjustment, independent tuning of rebound and compression, and a limited lifetime warranty. The required spanner wrench is P/N T114W or T115W, and optional thrust bearing kits are available (P/N 7888-109). This system is compatible with a wide range of GM vehicles from 1955 through 2004, including A-Body, F-Body, X-Body, B-Body, C10, C1500, S-Series Pickups, and more, as detailed in the comprehensive fitment chart.