Eibach 0600.225.1400 ERS Race Main Coilover Spring

The Eibach ERS (Eibach Race Spring) Main Spring is a precision-engineered coilover spring designed for racing applications and performance enthusiasts who demand optimal suspension control. Part of Eibach's renowned double-spring system, this linear-rate main spring provides the foundation for creating highly customizable suspension setups that balance compliance and control.

ERS Double-Spring System:

The ERS system utilizes a Main and Tender spring concept that delivers a softer initial rate when both springs compress together, then transitions to a firmer ending rate once the tender spring fully closes. The Main spring determines the final rate of the system with its linear-rate characteristic, while Tender springs (sold separately) control the initial rate and are available in both linear and progressive-rate options. This dual-spring approach allows fine-tuning of suspension behavior to optimize tire contact, minimize body roll, and reduce squat and dive during dynamic driving.

Key Features:

• Linear-rate spring characteristic for predictable, consistent performance
• Compatible with over 700 ERS spring components for virtually unlimited combinations
• High spring travel and deflection capability at short mounting lengths
• Shot-peened surface treatment for superior fatigue resistance
• Phosphate and epoxy coating provides excellent corrosion protection
• Precision manufacturing with tight tolerances for consistent performance
• Part number imprinted on spring indicates spring rate and physical dimensions
• Works with Eibach Helper springs and Connecting Plates (sold separately)

Engineered for racing applications where suspension tuning is critical, this ERS Main Spring delivers the firmness needed to control chassis dynamics while working in concert with tender springs to maintain tire contact over varying track surfaces.