Eibach 0700.225.0350 ERS Race Main Coilover Spring

The Eibach ERS (Eibach Race Spring) Main Spring is a precision-engineered coilover spring designed for racing and high-performance applications. This linear-rate spring serves as the foundation of Eibach's acclaimed ERS double-spring system, providing the muscle needed to transfer engine power to the track through optimum tire adhesion.

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 control the initial rate. This combination allows suspension tuners to achieve the precise balance between compliance over road irregularities and firmness needed to control body roll, squat, and dive during aggressive driving.

Key Features:

• Linear-rate characteristic for predictable suspension behavior
• Compatible with over 700 ERS spring components for nearly unlimited tuning combinations
• High spring travel and deflection capacity at short mounting lengths
• Shot-peened surface treatment for enhanced fatigue resistance
• Superior dynamic durability for extended component longevity
• Manufactured to precise tolerances for consistent performance
• Phosphate and epoxy coating for exceptional corrosion protection
• Clearly imprinted with part number indicating spring rate and physical dimensions
• Works with Eibach Connecting Plates to integrate with Tender springs

Each spring is individually packaged and manufactured to Eibach's exacting standards, ensuring you receive a race-quality component ready for installation. Whether you're a professional suspension engineer or weekend racing enthusiast, the ERS Main Spring provides the foundation for a precisely tuned suspension system.