Eibach ERS ID Linear Tender Spring - 2.44" Length (40-60-0030) SIDE SKIRTS and central force design

and central force design

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Eibach ERS ID Linear Tender Spring - 2.44" Length (40-60-0030) SIDE SKIRTS and central force designLinear Tender Spring by Eibach The ERS systems relies on a Main and Tender spring concept that provides a softer initial rate when both springs are compressed together, then delivers the desired firmer ending rate once the tender spring closes completely. The Main spring has a linear rate characteristic and determines the final rate of the system. The Tender springs are available in a variety of linear rate as well as progressive rate characteristics