Eibach 0700.225.0800 ERS Race Main Coilover Spring

The Eibach ERS (Eibach Race Spring) system represents the pinnacle of suspension tuning technology for racing and high-performance applications. This Race Main Spring is a critical component of Eibach's renowned double-spring system, engineered to deliver optimal power transfer from engine to track through superior adhesion and precise suspension control.

ERS Double-Spring System Technology:

The ERS system utilizes a sophisticated Main and Tender spring configuration that provides exceptional tuning flexibility. The Main spring features a linear-rate characteristic that determines the final spring rate of the system. When combined with a Tender spring, the system delivers a softer initial rate as both springs compress together, then transitions to the desired firmer ending rate once the tender spring fully closes. This dual-rate behavior allows engineers to perfectly balance compliance over road irregularities while maintaining firm control during cornering, acceleration, and braking.

Key Features:

• Linear-rate characteristic provides consistent, predictable spring behavior
• Compatible with over 700 different ERS spring components for virtually unlimited tuning combinations
• High spring travel (deflection) delivers maximum end loads at short mounting lengths
• Shot-peened surface treatment enhances fatigue resistance and durability
• Superior corrosion protection through phosphating and epoxy coating
• Precision manufacturing ensures tight tolerances for consistent performance
• Imprinted with part number indicating spring rate and physical dimensions for easy identification
• Block resistance design prevents coil binding
• Individual protective packaging maintains quality during shipping and storage

System Components:

This Main spring is designed to work 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). The modular design allows suspension engineers and enthusiasts to create custom spring combinations tailored to specific vehicle requirements and track conditions.

Application:

Ideal for racing applications, track day vehicles, and serious performance builds where precise suspension tuning is critical. The ERS system's flexibility makes it suitable for circuit racing, time attack, autocross, and other motorsport disciplines requiring maximum suspension control and adjustability.