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The Eibach ERS 60mm inner-diameter progressive tender spring delivers a variable-rate support function for coil‑over and race suspension assemblies where a changing spring rate is desired. As part of Eibach’s ERS Race Spring System, it’s produced in series with controlled tolerances to ensure consistent behavior across units, giving builders a repeatable, quality component that supports nuanced suspension response.
Eibach ERS 60mm ID Progressive Tender Spring
