Eibach 0600.225.0250 ERS Race Main Coilover Spring

The Eibach ERS (Eibach Race Spring) Race Main Spring is a precision-engineered linear-rate coilover spring designed for racing and high-performance applications. This spring is part of Eibach's renowned ERS double-spring system, which allows suspension engineers and enthusiasts to create custom suspension setups using over 700 different spring components for nearly unlimited tuning combinations.

ERS Double-Spring System:

The ERS system uses a Main and Tender spring concept to optimize suspension performance. The Main spring provides the final rate of the system with linear-rate characteristics, while Tender springs determine the initial rate. When both springs compress together, the system provides a softer initial rate, then transitions to a firmer ending rate once the tender spring fully compresses. This design balances compliance over road irregularities while minimizing body roll, squat, and dive during aggressive driving.

Key Features:

• Linear-rate main spring for predictable suspension behavior
• Compatible with Eibach ERS Tender and Helper springs for custom rate tuning
• High spring travel and deflection capability at short mounting lengths
• Shot-peened surface treatment for superior fatigue resistance
• Phosphate and epoxy coating for exceptional corrosion protection
• Precision manufacturing with tight tolerances for consistent performance
• Part number imprinted on spring indicates spring rate and physical dimensions
• High block resistance and dynamic durability
• Individual protective packaging to prevent damage

This Main spring works in conjunction with Eibach Tender springs (for dual-rate tuning) or Helper springs (to prevent spring looseness at full droop). Connecting plates are available separately to join Main and Tender springs on the damper assembly.