Coilover Spring 20in 3.75in ID Silver

The Coilover Spring 20in 3.75in ID Silver from EIBACH is a precision-engineered suspension component designed for builders, fabricators, and enthusiasts who demand consistent damping performance in custom coilover setups. This 20-inch coil spring serves as the foundation for adjustable suspension systems across performance vehicles, drift cars, and race applications where tuned spring rates are essential to handling dynamics. Coilover springs isolate the shock absorber and allow independent control of ride height and compliance, making them indispensable for vehicles requiring both performance and adjustability.

This spring features a 3.75-inch inner diameter and is manufactured from high-grade steel with a silver powder-coat finish that resists corrosion and maintains aesthetic appeal under harsh conditions. The 400 lb/in spring rate provides a stiff progressive response ideal for vehicles carrying increased loads or requiring enhanced anti-squat and anti-dive characteristics during braking and acceleration. At 20 inches in length, this spring accommodates mid-to-high-travel coilover designs common in lowered and performance-oriented builds, while the robust construction ensures longevity through repeated compression cycles and lateral G-forces typical of road and track use.

Builders and suspension technicians pair this coilover spring with compatible shock bodies and mounting hardware to create fully tuned suspension systems tailored to specific vehicle weight and driving intent. The 3.75-inch bore diameter aligns with industry-standard coilover platforms, ensuring straightforward integration into modular suspension kits and custom fabrication projects. Installation requires proper spring compression equipment and attention to preload settings; consult your vehicle's suspension geometry and intended application to confirm this spring rate matches your total system requirements. Weight capacity and handling characteristics depend on complementary shock damping, chassis stiffness, and overall suspension geometry tuning.