The Eibach ERS rear spring is specified as a 13-inch length coil with a 5.00 inch outside diameter and platinum finish for rear suspension use. It functions as a replacement coil for compatible coilover assemblies or spring setups, providing consistent dimensions for technicians tuning rear ride height or replacing worn springs without modifying mounting hardware.
Eibach ERS 13 in. Length x 5.00 in. OD Platinum Rear Spring