Eibach 0800.225.0225 ERS 8 Inch Coil-Over Spring 2.25 ID Race Main Spring

The Eibach 0800.225.0225 is an 8-inch race main spring with a 2.25-inch inner diameter, designed for the Eibach ERS (Eibach Race Spring) double-spring system. This linear-rate coil-over spring provides the foundation for precision suspension tuning in racing applications, delivering the balance needed to transfer engine power to the track through optimum tire adhesion.

ERS Double-Spring System:

The ERS system utilizes a main and tender spring concept that delivers exceptional tuning flexibility. When both springs compress together, the system provides a softer initial rate for improved road contact over irregularities. Once the tender spring fully closes, the main spring's linear rate takes over, providing the firmer ending rate needed to control body roll, squat, and dive during aggressive driving. With over 700 different spring components available, the ERS system offers virtually unlimited combination possibilities for precise suspension tuning.

Key Features:

• Linear-rate characteristic determines the final system rate
• High spring travel and deflection capability at compact mounting lengths
• Shot-peened surface treatment for enhanced fatigue resistance
• Superior dynamic durability for extended component life
• Manufactured to precise tolerances for consistent performance
• Advanced corrosion protection through phosphating and epoxy coating
• Part number imprinted on spring indicates rate and physical dimensions
• Compatible with Eibach tender springs and helper springs for custom tuning
• Works with Eibach connecting plates for main/tender spring combinations

This main spring is engineered for racers and performance enthusiasts who demand professional-grade suspension components with the flexibility to fine-tune their setup for specific track conditions and driving styles.