Eibach 0700.225.1000 ERS Race Main Coilover Spring

The Eibach ERS (Eibach Race Spring) system represents a revolutionary approach to suspension tuning, allowing racers and enthusiasts to create custom spring combinations from over 700 individual components. This race main spring serves as the foundation of Eibach's renowned double-spring system, delivering the precise balance between compliance and control needed for optimal track performance.

How the ERS System Works:

The ERS double-spring system combines a Main spring with a Tender spring to create a sophisticated two-stage rate characteristic. Initially, both springs compress together to provide a softer rate that maintains tire contact over surface irregularities. Once the tender spring fully compresses, the main spring alone determines the final rate, delivering the firmness needed to control body roll, squat, and dive during aggressive driving. This main spring features a linear-rate characteristic and establishes the system's ending rate.

Key Features:

• Linear-rate main spring for predictable, consistent suspension behavior
• High deflection capability allows substantial spring travel in compact mounting lengths
• Shot-peened surface treatment for enhanced fatigue resistance
• Precision manufacturing with tight tolerances for reliable performance
• Phosphate and epoxy coating provides superior corrosion protection
• Part number imprinted on spring indicates spring rate and physical dimensions
• Designed for use with Eibach Tender springs and connecting plates
• Compatible with helper springs to prevent main spring loosening at full droop
• Individually packaged for protection during storage and shipping

Engineered for racing applications where suspension precision is critical, this main spring is manufactured from high-quality spring steel with rigorous quality control to ensure long-term durability under demanding conditions.