Eibach 1000.250.0600 ERS Race Main Coilover Spring 10" x 2.5" 600 lb/in

The Eibach ERS (Eibach Race Spring) 1000.250.0600 is a high-performance race main spring designed for precision suspension tuning in motorsports applications. This linear-rate coilover spring measures 10 inches in length with a 2.5-inch diameter and delivers a 600 lb/in spring rate, providing the foundation for optimized vehicle dynamics on the track.

ERS Double Spring System Technology:

This main spring is part of Eibach's renowned ERS double-spring system, which allows suspension engineers and enthusiasts to create nearly unlimited spring combinations from over 700 different components. The system uses a Main and Tender spring concept that provides 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's linear-rate characteristic determines the final rate of the complete system.

Key Features:

• Linear-rate main spring with precise 600 lb/in rate for consistent performance
• High spring travel and deflection capability at short mounting lengths
• Shot-peened surface treatment for enhanced fatigue resistance
• Superior dynamic durability for extended component longevity
• Manufactured to precise tolerances for predictable performance
• Advanced corrosion protection through phosphating and epoxy coating
• Clearly imprinted with part number indicating spring rate and physical dimensions
• Compatible with Eibach tender springs, helper springs, and connecting plates
• Individual protective packaging to prevent damage during storage and shipping

Designed for racing applications where suspension tuning is critical, this ERS main spring delivers the firm, controlled spring rate needed to minimize body roll, squat, and dive during aggressive cornering, acceleration, and braking while maintaining optimal tire contact with the track surface.