Eibach 0500.225.0750 ERS Race Main Coilover Spring 2.25" ID x 7.5" Length

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

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 and compliance. Once the tender spring fully compresses, the Main spring's linear rate takes over, providing the firmer ending rate needed to control body roll, squat, and dive during aggressive cornering, acceleration, and braking.

Key Features:

• Linear-rate characteristic determines the final rate of the suspension system
• Compatible with over 700 different ERS spring components for unlimited tuning combinations
• High spring travel and deflection capability with short mounting lengths
• Shot-peened surface treatment for enhanced fatigue resistance
• Superior dynamic durability and component longevity
• Manufactured to precise tolerances for consistent performance
• Advanced corrosion protection through phosphating and epoxy coating
• Imprinted with part number indicating spring rate and physical dimensions for easy identification
• Works with Helper springs to prevent spring looseness at full droop (up to 50mm gap coverage)
• Compatible with Eibach connecting plates for multi-spring configurations

This Main spring is designed for use with Eibach's modular ERS system, allowing suspension engineers and enthusiasts to create custom spring combinations tailored to specific vehicle requirements and track conditions. Each spring is individually packaged for protection and features block resistance for maximum suspension travel.