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The Eibach ERS silver coilover spring with a 3.75 in inner diameter is designed for coilover suspension and chassis tuning projects requiring precise inner sizing. As part of Eibach’s ERS Race Spring System, it benefits from series production aimed at linear spring rates, low tolerances and consistent quality. Use it when predictable, repeatable spring response and accurate fit with coilover hardware are priorities.
Eibach Silver Coilover Spring - 3.75in I.D.
