Eibach 0900.225.0800 ERS Race Main Coilover Spring

The Eibach 0900.225.0800 is a precision-engineered race main spring designed for the company's renowned ERS (Eibach Race Spring) double-spring system. This high-performance coilover spring delivers the tuning flexibility needed to optimize suspension performance on the track by providing proper weight transfer control during cornering, acceleration, and braking.

ERS Double-Spring System:

This main spring works as part of Eibach's ERS system, which combines main and tender springs to create a dual-rate suspension setup. The system provides a softer initial rate when both springs compress together, then transitions to a firmer rate once the tender spring fully compresses. The main spring features a linear-rate characteristic and determines the final spring rate of the complete system. With over 700 different spring components available, the ERS system offers nearly unlimited tuning combinations.

Key Features:

• Linear-rate main spring for predictable suspension behavior
• Compatible with Eibach tender and helper springs for custom dual-rate setups
• High spring travel and deflection capabilities at compact mounting lengths
• Shot-peened surface treatment for increased fatigue resistance
• Phosphate and epoxy coating provides superior corrosion protection
• Precision manufacturing with tight tolerances for consistent performance
• Part number imprinted on spring indicates spring rate and physical dimensions
• Block resistance design prevents coil binding
• High dynamic durability for extended component life in racing conditions

This spring is designed to work with Eibach connecting plates (sold separately) to attach tender springs for complete ERS system functionality. Individual protective packaging ensures the spring arrives ready for installation.