Eibach 0500.225.0900 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 renowned double-spring system, providing the muscle needed to transform engine power into optimal track adhesion through proper suspension tuning.

ERS Double-Spring System:

The ERS system uses 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 and maintains linear-rate characteristics throughout its travel. With over 700 different spring components available, suspension engineers can create nearly unlimited combinations to achieve the perfect balance between compliance and control.

Key Features:

• Linear-rate characteristic for consistent, predictable performance
• High spring travel (deflection) with high end loads at short mounting lengths
• Shot-peened surface treatment for enhanced fatigue resistance
• High dynamic durability for extended component longevity
• Manufactured to precise tolerances for consistent performance
• Superior corrosion protection through phosphating and epoxy coating
• Clearly imprinted with part number indicating spring rate and physical dimensions
• Block resistance for overload protection
• Compatible with Eibach connecting plates for tender spring integration

Each spring is individually packaged and marked for easy identification. The ERS system allows for fine-tuning of suspension characteristics to reduce body roll, squat, and dive during cornering, acceleration, and braking while maintaining sufficient compliance to compensate for road irregularities.