Spring 4in Coil-Over 3.0in ID Silver

The Eibach Spring 4in Coil-Over 3.0in ID Silver is a precision-engineered suspension component designed for serious vehicle builders and performance enthusiasts who demand reliability and repeatability in their coil-over systems. Built by Eibach, a trusted name in suspension engineering for decades, this spring serves as the load-bearing heart of a coil-over assembly, providing consistent spring rates and stroke performance. Whether you're building a track-focused machine, upgrading a daily driver's handling, or fine-tuning an existing suspension platform, this coil-over spring delivers the stability and predictability necessary for controlled performance driving.

This spring features a 4-inch free length with a 3.0-inch inner diameter, optimized for integration with standard coil-over damper assemblies commonly found in modern suspension kits. The 3.0in ID specification ensures proper seating on shock bodies within standard bore ranges, while the silver finish provides corrosion resistance in harsh driving conditions and extended storage. The spring's 1.795 lbs weight reflects its precision manufacturing and material composition, contributing to the overall responsiveness of your suspension geometry. Eibach's manufacturing tolerances ensure consistent spring rates across multiple units, critical for maintaining balanced suspension behavior across all four corners of your vehicle.

This coil-over spring benefits street and road-course drivers, suspension tuners, and restoration shops seeking OEM-equivalent or performance-grade replacement parts. Installation requires a spring compressor tool and basic mechanical knowledge—proper setup ensures your dampers can cycle fully through their intended range without bind or noise. Verify your application's specific spring rate and length requirements before purchase, as coil-over performance depends on precise matching between spring and damper characteristics. Compatible with most adjustable coil-over kits featuring 3.0-inch bore diameters, this spring integrates seamlessly into existing performance suspension platforms.