Eibach 1000.250.0325 ERS Race Main Coilover Spring 2.5" ID

The Eibach 1000.250.0325 is a precision-engineered race main spring designed for the ERS (Eibach Race Spring) modular coilover system. This linear-rate coil spring serves as the foundation of Eibach's renowned double-spring setup, providing the final spring rate in a main/tender spring configuration for professional racing and high-performance street applications.

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 a firmer ending rate once the tender spring fully compresses. This main spring features linear-rate characteristics and determines the final rate of the complete system. With over 700 different spring components available, the ERS system offers virtually unlimited tuning combinations for precise suspension setup.

Key Features:

• Linear-rate race main spring for ERS double-spring systems
• 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
• Precision manufacturing with tight tolerances
• Advanced corrosion protection through phosphating and epoxy coating
• Clearly imprinted with part number indicating spring rate and dimensions
• Individual protective packaging to prevent damage
• Compatible with Eibach connecting plates for main/tender spring assembly

This race main spring is designed to work with Eibach tender springs and helper springs to create a precisely tuned suspension system that balances compliance over road irregularities with the firmness needed to control body roll, squat, and dive during aggressive driving. The result is optimum tire contact and maximum performance on track or street.