Eibach 0800.225.0550 ERS Race Main Coilover Spring

The Eibach ERS (Eibach Race Spring) Main Spring is engineered to provide the precise suspension tuning needed for optimal track performance. This linear-rate coilover spring serves as the foundation of Eibach's renowned double-spring system, transforming engine power into maximum traction through superior adhesion and control.

ERS Double-Spring System Technology:

The ERS system utilizes a Main and Tender spring concept that delivers a softer initial rate when both springs compress together, then transitions to the desired firmer ending rate once the tender spring fully closes. The Main spring's linear-rate characteristic determines the final rate of the complete system, providing the muscle needed to minimize body roll, squat, and dive during cornering, acceleration, and braking. With over 700 individual spring components available, the ERS system offers virtually unlimited tuning combinations for suspension engineers and racing enthusiasts.

Key Features:

• Linear-rate characteristic determines final system rate
• High spring travel and deflection for maximum end loads at short mounting lengths
• Shot-peened surface treatment for enhanced fatigue resistance
• Superior dynamic durability ensures extended component longevity
• Manufactured to precise tolerances for consistent performance
• Advanced corrosion protection through phosphating and epoxy coating
• Block resistance prevents spring collapse under extreme loads
• Clearly imprinted with part number indicating spring rate and physical dimensions
• Individual protective packaging to prevent damage during storage and transport

Compatible with Eibach Tender springs, Helper springs, and Connecting Plates to create custom suspension solutions tailored to specific vehicle requirements and racing applications.