The Eibach ERS coil-over spring is a 100mm length, 60mm inner-diameter race spring from Eibach's ERS line. ERS springs are produced in series to deliver a highly linear spring rate with very low tolerances and consistent quality. That repeatable manufacturing experience yields dependable, consistent spring characteristics suited to coilover and racing suspension use.
Eibach ERS 100mm Length x 60mm ID Coil-Over Spring