Eibach 0600.225.1300 ERS Race Main Coilover Spring

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

ERS Double-Spring System:

This main spring works within Eibach's ERS system, which combines main and tender springs to create a sophisticated two-stage spring rate. The system delivers a softer initial rate when both springs compress together, then transitions to a firmer ending rate once the tender spring fully closes. This main spring determines the final rate of the complete system, providing precise control over body roll, squat, and dive during cornering, acceleration, and braking.

Key Features:

• Linear-rate spring characteristic for predictable, consistent performance
• Compatible with over 700 ERS components for nearly unlimited suspension tuning combinations
• High spring travel and deflection capability at compact mounting lengths
• Shot-peened surface treatment for enhanced fatigue resistance
• Superior dynamic durability for extended component life under racing conditions
• Manufactured to precise tolerances for consistent performance
• Dual-layer corrosion protection through phosphating and epoxy coating
• Clearly marked with part number indicating spring rate and physical dimensions
• Block resistance design prevents coil binding

The ERS system allows suspension engineers and enthusiasts to fine-tune suspension characteristics by combining main springs with tender springs (for dual-rate tuning), helper springs (to prevent spring looseness at full droop), and connecting plates. This modular approach delivers unmatched flexibility for achieving the perfect balance between compliance over road irregularities and firmness for chassis control.