Spring Rear 20in x 5in x 85

The Spring Rear 20in x 5in x 85 from EIBACH is a precision-engineered coil spring designed for serious vehicle builders and performance enthusiasts who demand reliable load management on rear suspensions. This component addresses a fundamental challenge in automotive modification: maintaining proper ride height and load distribution when upgrading or customizing a vehicle's chassis. Whether you're handling increased payload capacity, preparing for lowering kit installation, or restoring OEM suspension geometry after aftermarket modifications, this rear spring delivers the consistent performance that separates professional builds from amateur attempts.

EIBACH's engineering focuses on spring rate consistency and longevity—the 85-pound rate (per inch of compression) provides moderate resistance suitable for street and moderate track applications without sacrificing daily drivability. The 20-inch length and 5-inch diameter specifications are precision tolerances that ensure proper fitment within factory suspension geometry while maintaining adequate clearance for brake lines, brake dust shields, and suspension travel. Coil springs at this specification rating resist permanent deformation under sustained load cycles, a critical factor that separates quality suspension components from bargain alternatives that sag prematurely under real-world driving conditions.

This rear spring is ideal for mechanics and vehicle owners performing suspension overhauls, platform conversions, or weight distribution corrections on light-duty trucks, sedans, and performance vehicles. Installation typically requires proper spring compressor tools and suspension jacking procedures—never attempt spring replacement without full vehicle support on quality jack stands. Verify compatibility with your specific year, make, and model before ordering, as suspension geometry varies significantly across platforms; incorrect spring rates compromise handling, increase stopping distance, and create dangerous load shift during cornering or emergency maneuvers.