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The Eibach ERS 2.50 in. ID progressive tender spring is a coilover spring with a 2.50‑inch inner diameter and a progressive rate profile. Built for coilover installations where a progressively increasing spring rate is preferred, it offers a softer initial response that firms up under heavier loads, providing a balance between comfort and control for varied driving conditions.
Eibach ERS 2.50 in. ID Progressive Tender Spring
