The Eibach ERS rear spring is a coilover spring sized at 13 inches overall length with a 5.00 inch outside diameter and a platinum finish, intended for rear suspension applications. It serves as a replacement spring in coilover assemblies where those dimensions are required, allowing installers to address ride height and spring rate consistency when configuring or rebuilding the rear suspension.
Eibach ERS 13 in. Length x 5.00 in. OD Platinum Rear Spring