Eibach 0800.225.0300 ERS Race Main Coilover Spring

The Eibach 0800.225.0300 is a precision-engineered race main spring designed for the ERS (Eibach Race Spring) double-spring system. This high-performance coilover spring delivers the optimal balance between compliance and control, transforming engine power into track adhesion through superior suspension tuning.

ERS Double-Spring System:

This main spring is part of Eibach's renowned ERS system, which uses a main and tender spring concept to provide exceptional tuning flexibility. The linear-rate main spring determines the final rate of the system, working in conjunction with tender springs to deliver a softer initial compression rate that transitions to a firmer ending rate once the tender spring fully compresses. This design reduces body roll, squat, and dive during aggressive cornering, acceleration, and braking while maintaining optimal road contact.

Key Features:

• Linear-rate characteristic for predictable suspension behavior
• Compatible with over 700 ERS spring components for unlimited tuning combinations
• High spring travel and deflection with short mounting lengths for maximum versatility
• Shot-peened surface treatment for enhanced fatigue resistance
• Superior dynamic durability for extended component life
• Precision manufacturing with tight tolerances for consistent performance
• Phosphate and epoxy coating provides excellent corrosion protection
• Part number imprinted on spring indicates spring rate and physical dimensions for easy identification
• Works with Eibach helper springs to prevent spring looseness at full droop
• Compatible with Eibach connecting plates for main and tender spring integration

Designed for serious racers and performance enthusiasts who demand the highest level of suspension control and adjustability. Each spring is individually packaged to ensure protection during shipping and storage.