Eibach 1400.250.0100 ERS Race Main Coilover Spring 2.5" ID

The Eibach 1400.250.0100 is a precision-engineered race main spring designed for the ERS (Eibach Race Spring) double-spring system. This high-performance coilover spring delivers the muscle needed to transfer engine power to the track through optimized suspension adhesion and control.

ERS Double-Spring System:

Part of Eibach's world-renowned ERS system, this main spring works with tender springs to create a sophisticated dual-rate suspension setup. The system provides a softer initial rate when both springs compress together, then transitions to a firmer ending rate once the tender spring fully closes. With over 700 different spring components available, the ERS system offers nearly unlimited tuning combinations for suspension engineers and racing enthusiasts.

Key Features:

• Linear-rate characteristic determines the final rate of the suspension system
• Precision-manufactured spring steel construction with exact tolerances
• Shot-peened surface treatment for enhanced fatigue resistance
• High spring travel and deflection capability at compact mounting lengths
• Exceptional dynamic durability for extended component longevity
• Superior corrosion protection through phosphating and epoxy coating
• Block resistance design prevents coil bind
• Clearly imprinted with part number indicating spring rate and physical dimensions
• Individual protective packaging for safe storage and transport

This main spring is designed to work with Eibach tender springs, helper springs, and connecting plates to create a fully customizable suspension system. The precise spring balance reduces body roll, squat, and dive during cornering, acceleration, and braking while maintaining optimal road contact over surface irregularities.