Spring 9in Coil-Over 2.25in ID

The Spring 9in Coil-Over 2.25in ID from EIBACH is a precision-engineered suspension component designed for builders and enthusiasts seeking controlled ride height adjustment without compromising handling integrity. This coil-over spring pairs with dampers to deliver the foundation for modern suspension tuning, whether you're building a track-focused platform or dialing in a street machine with specific geometry requirements.

EIBACH's reputation for consistent spring rates and longevity makes this 9-inch unit a trusted choice across drag racing, road course, and autocross applications. Built with a 2.25-inch inner diameter (ID), this coil-over spring accommodates standard monotube and twin-tube damper bodies, ensuring straightforward integration into existing suspension architectures. The 9-inch free length provides adequate compression and extension travel for both lowered and stock-height setups, maintaining natural roll stiffness while supporting adjustable ride height platforms.

EIBACH's linear spring rates eliminate bind and chaotic mid-corner movement, translating driver input into predictable chassis behavior—critical when tuning for balance and tire compliance across variable track surfaces. Mechanics and fabricators commonly pair this spring with aftermarket coil-over kits on street and competition vehicles, from muscle car restorations to modern performance platforms requiring suspension refresh.