Eibach 0600.250.0650 ERS Race Main Coilover Spring 2.5" ID 6.5" Length

The Eibach ERS (Eibach Race Spring) Race Main Spring is a precision-engineered linear-rate coilover spring designed for racing and high-performance suspension systems. This spring serves as the foundation of Eibach's renowned double-spring system, delivering the muscle needed to transform engine power into optimal track adhesion through precisely tuned suspension dynamics.

Key Features:

• Linear-rate characteristic determines the final rate of the complete ERS system
• Compatible with Eibach's modular ERS system offering over 700 spring components for unlimited tuning combinations
• High spring travel and deflection capacity delivers maximum end loads at short mounting lengths
• Shot-peened surface treatment for enhanced fatigue resistance and component longevity
• Dual corrosion protection through phosphating and epoxy coating
• Precision-manufactured to tight tolerances for consistent performance
• Block resistance design prevents coil binding under extreme compression
• Part number imprinted on spring indicates spring rate and physical dimensions for easy identification
• Works with Eibach Tender springs to create softer initial rates, then transitions to firmer ending rate
• Compatible with Eibach Helper springs and Connecting Plates for complete system integration

This Main spring is the core component in Eibach's ERS double-spring concept, which balances the need for compliance over road irregularities while maintaining firm control over body roll, squat, and dive during aggressive driving. When combined with a Tender spring, the system provides a softer initial rate when both springs compress together, then delivers the desired firmer rate once the tender spring fully compresses. The result is a suspension system that's both compliant and responsive—essential for competitive motorsports and demanding track applications.