Eibach 0600.250.0400 ERS Race Main Coilover Spring 2.5" ID

The Eibach 0600.250.0400 is a precision-engineered race main spring designed for the renowned ERS (Eibach Race Spring) double-spring system. This high-performance coilover spring delivers the muscle needed to transform engine power into optimal track adhesion through a perfectly tuned suspension system.

ERS Double-Spring System Technology:

The ERS system utilizes a Main and Tender spring concept that provides exceptional tuning flexibility. The Main spring features a linear-rate characteristic and determines the final rate of the complete system. When combined with a Tender spring, the system delivers a softer initial rate when both springs compress together, then transitions to a firmer ending rate once the tender spring fully closes. This sophisticated approach allows suspension engineers and enthusiasts to fine-tune suspension behavior for cornering, acceleration, and braking performance.

Key Features:

• Part of Eibach's extensive ERS component library with over 700 different spring options for nearly unlimited combination possibilities
• Linear-rate spring characteristic for predictable, consistent performance
• High spring travel (deflection) capability with impressive end loads at short mounting lengths
• Shot-peened surface treatment for enhanced fatigue resistance
• Superior dynamic durability for extended component longevity
• Manufactured to precise tolerances for consistent performance
• Advanced corrosion protection through phosphating and epoxy coating
• Block resistance design prevents coil binding
• Clearly imprinted with part number indicating spring rate and physical dimensions for easy identification
• Individual protective packaging to prevent damage during shipping and storage

System Compatibility:

This Main spring works seamlessly with Eibach Tender springs (available in linear and progressive rates), Helper springs (for preventing spring looseness at full droop), and Connecting Plates (available in inside and outside diameter configurations) to create a complete, customizable suspension solution for racing applications.

Eibach's ERS system represents decades of motorsports engineering expertise, delivering unsurpassed performance and flexibility for serious racers and suspension tuners seeking the ultimate in adjustability and reliability.