Spring C/O Ext Travel 2.5in ID x 8in

The Eibach Spring C/O Ext Travel 2.5in ID x 8in coil-over suspension spring is engineered for serious suspension builders and performance enthusiasts seeking precision ride height and load control. This application-specific coil spring delivers the stiffness and geometry needed for custom coil-over setups on street, drift, and track vehicles where tunable spring rates are non-negotiable. Whether you're building a lowered street machine or a competition-ready platform, this Eibach spring provides the engineering foundation required to achieve repeatable performance and predictable handling characteristics.

Manufactured from high-grade steel and finished in a durable red powder coat, the Spring C/O Ext Travel 2.5in ID x 8in features a 100 lbs/in spring rate—a mid-range stiffness ideal for daily-driven modified vehicles and weekend track duty. The 2.5-inch inside diameter accommodates standard coil-over shock bodies, while the 8-inch free length accommodates extended-travel suspension designs common in lifted trucks, rally cars, and vehicles running increased suspension geometry. The XT barrel design minimizes coil bind and lateral deflection, ensuring consistent spring behavior under load cycling and reducing the risk of premature fatigue at weld points and mounting interfaces.

This spring pairs seamlessly with adjustable coil-over dampers from Eibach and compatible third-party manufacturers, making it ideal for builders planning modular suspension systems. Installation requires proper spring compressors and alignment with matching damper specifications—verify your shock's stroke length and mounting diameter before ordering. The 100 lbs/in rate suits vehicles in the 2,500–3,500 lb range per corner; heavier platforms or aggressive lowering may require stiffer rates, while lighter builds benefit from softer options. Sold individually; most suspension builds require four springs (one per corner) plus matching dampers.