COIL OVER KIT 2.5IN ID 7Q SERIES

The QA1 Coil Over Kit 2.5IN ID 7Q Series is a precision-engineered suspension upgrade designed for street machines, road racing platforms, and high-performance street cars seeking adjustable ride height and improved handling characteristics. This coil over assembly replaces conventional spring-and-shock combinations with a fully integrated unit that allows you to dial in suspension geometry with independent spring preload adjustment and damping control.

Built for enthusiasts and fabricators who demand both performance and fine-tuning capability, this kit addresses the fundamental need for lowering, stiffening, and balancing vehicle dynamics on demand. The 2.5-inch inner diameter (ID) construction provides a compact yet effective spring mounting platform compatible with a wide range of coil spring rates and preload configurations. QA1's 7Q series represents their performance-oriented design philosophy, incorporating precision-machined bodies and adjustable valving that responds dynamically to cornering loads, braking events, and acceleration forces.

The modular architecture allows custom spring selection to match your specific vehicle weight, driving intent, and track or street application—critical for fabricators building custom suspension geometry or restoring classic platforms with modern handling expectations. Adjustable ride height enables quick geometry changes without spring swaps, making this system invaluable for dialing in camber, caster, and ride-height-dependent performance.