Eibach 0800.250.0250 ERS Race Main Coilover Spring 2.5" ID 250 lb/in

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

ERS Double-Spring System:

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 closes. The Main spring features a linear-rate characteristic and determines the final rate of the system, while Tender springs control the initial rate and are available in both linear and progressive-rate options.

Key Features:

• Linear-rate main spring with precise 250 lb/in spring rate
• 2.5-inch inside diameter for compatibility with performance dampers
• Shot-peened surface treatment for enhanced fatigue resistance
• High spring travel and deflection capability at short mounting lengths
• Superior block resistance for consistent performance
• Exceptional dynamic durability for extended component longevity
• Manufactured to precise tolerances for predictable tuning
• Advanced corrosion protection through phosphating and epoxy coating
• Clearly imprinted with part number indicating spring rate and physical dimensions

System Compatibility:

This Main spring can be combined with over 700 different ERS components including Tender springs, Helper springs, and connecting plates to create nearly unlimited suspension combinations. Helper springs prevent the Main spring from becoming loose at full droop, while connecting plates (available in inside and outside diameter configurations) allow Main and Tender springs to work together as a complete system.

Each spring is individually packaged for protection and easy identification, making it ideal for professional racing teams and performance enthusiasts who demand precision suspension tuning capabilities.