20in x 5in Rear Spring 125lb

The 20in x 5in Rear Spring 125lb from EIBACH is a coil spring engineered for vehicle suspension tuning, load support, and ride height adjustment on performance and street-driven platforms. This component is essential for mechanics and enthusiasts looking to fine-tune suspension geometry, improve handling characteristics, or accommodate chassis modifications without compromising stock mounting points. Whether you're upgrading from OEM springs or building a custom suspension setup, rear coil springs play a critical role in determining your vehicle's ride quality, corner balance, and weight distribution.

EIBACH springs are manufactured using high-tensile chromium-alloy steel and precision-wound to exact specifications, ensuring consistent spring rate delivery across compression cycles. The 125lb spring rate on this 20-inch rear unit provides progressive load support suitable for vehicles requiring moderate stiffness—ideal for street and light track applications where ride comfort and predictable suspension response matter equally. At 8.63 lbs per spring, this component integrates seamlessly into dual-spring rear configurations, maintaining proper axle centering and lateral stability during cornering while resisting sagging under sustained loads.

This rear spring pairs best with matching front springs and quality dampers to create a cohesive suspension package with balanced ride height and spring rates across all corners. Installation requires removing the rear axle assembly or unloading the vehicle suspension—a task best handled in a lift or on jack stands by experienced technicians familiar with suspension geometry. Verify your vehicle's stock spring attachment points and shock absorber compatibility before purchase; EIBACH springs work with standard coilover perches and OEM suspension mounting hardware on most contemporary platforms.