COIL OVER KIT 5IN ID 5Q SERIES 9IN STROKE

The COIL OVER KIT 5IN ID 5Q SERIES 9IN STROKE from QA1 is a premium coilover suspension system engineered for serious automotive enthusiasts and professional mechanics seeking precise ride height control and handling refinement. This kit addresses the core challenge facing custom vehicle builders: achieving optimal suspension geometry while maintaining adjustability for both street and competitive driving. Built around a 5-inch inner diameter design with a 9-inch stroke capability, this coilover system delivers the travel range needed for aggressive lowering profiles without sacrificing suspension articulation or bottoming-out risks.

The 5Q series designation indicates QA1's refined damping architecture, which isolates bump and rebound independently for tunable ride characteristics across different track conditions and street environments. The 9-inch stroke provides substantial vertical travel, allowing you to adjust ride height without compromising suspension responsiveness or creating binding issues at full compression. The compact 5-inch ID construction maintains structural rigidity while minimizing unsprung weight—a critical consideration when modifying chassis dynamics. This design philosophy makes the kit suitable for platforms requiring both lowered stance and retained suspension compliance, whether you're building a road course competitor or a show-quality street machine.

This coilover kit benefits builders who demand OEM-level engineering with true adjustability, making it ideal for double-wishbone or independent suspension conversions on classic vehicles or modern platforms requiring aftermarket geometry correction. Installation requires basic suspension knowledge and proper alignment equipment post-setup; professional installation is recommended to ensure correct ride height, camber curves, and damping baseline. The 9-inch stroke accommodates both mild and aggressive lowering without creating suspension geometry compromise, making this kit versatile across multiple application types and build budgets.