Eibach 0800.250.0450 ERS Race Main Coilover Spring

The Eibach 0800.250.0450 is a high-performance race main spring designed for use in the company's acclaimed ERS (Eibach Race Spring) double-spring system. This precision-engineered coilover spring provides the foundation for optimizing suspension performance in racing and high-performance applications, delivering the ideal balance between compliance and control.

ERS Double-Spring System Design:

This main spring works as part of Eibach's innovative double-spring concept, which combines main and tender springs to create a progressive suspension response. The linear-rate main spring determines the final rate of the system, while tender springs control the initial rate. This configuration provides a softer initial compression when both springs work together, then transitions to a firmer rate once the tender spring fully compresses, optimizing grip and reducing body roll, squat, and dive during dynamic driving.

Key Features:

• Linear-rate characteristic for predictable, consistent performance
• Compatible with over 700 ERS components for unlimited tuning combinations
• High spring travel and deflection capability at compact mounting lengths
• Shot-peened surface treatment for enhanced fatigue resistance
• Exceptional dynamic durability for extended component life
• Manufactured to precise tolerances for consistent performance
• Advanced corrosion protection through phosphating and epoxy coating
• Clearly marked with part number indicating spring rate and dimensions
• Block resistance to prevent over-compression damage

Designed for use with Eibach connecting plates (sold separately) to attach tender springs, and compatible with helper springs to prevent spring seat separation at full droop. Each spring is individually packaged to ensure protection during shipping and storage.