The Eibach ERS rear spring is a 13-inch length coilover spring with a 5.00 inch outer diameter and a platinum finish designed for rear suspension use. It functions as a direct spring replacement where those dimensions are specified, providing a measured option for tuning rear ride height and supporting coilover rebuilds or spring upgrades without altering mounting hardware.
Eibach ERS 13 in. Length x 5.00 in. OD Platinum Rear Spring