Eibach 0500.225.1000 ERS Race Main Coilover Spring

The Eibach ERS (Eibach Race Spring) Main Spring is engineered for racing and high-performance applications where precise suspension tuning is critical. This linear-rate coil spring forms the foundation of Eibach's renowned double-spring system, providing the muscle needed to transfer power to the track through optimum tire adhesion.

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 features a linear-rate characteristic and determines the final rate of the suspension system. With over 700 different spring components available, suspension engineers can create nearly unlimited combinations to dial in the perfect balance between compliance and control.

Key Features:

• Linear-rate spring design for consistent, predictable performance
• High spring travel and deflection capability at short mounting lengths
• Shot-peened surface treatment for enhanced fatigue resistance
• Superior dynamic durability for extended component life
• Manufactured to precise tolerances for consistent performance
• Phosphate and epoxy coating for excellent corrosion protection
• Clearly imprinted with part number indicating spring rate and dimensions
• Block resistance to prevent coil binding
• Compatible with Eibach connecting plates for tender spring installation

This Main spring can be used alone or combined with Eibach Tender springs and Helper springs to create a custom-tuned suspension system for racing, track days, or advanced street performance applications.