Eibach 0600.225.0550 ERS Race Main Coilover Spring

The Eibach ERS (Eibach Race Spring) Main Spring is a precision-engineered linear-rate coilover spring designed for racing and high-performance suspension applications. This spring is part of Eibach's renowned ERS double-spring system, which allows suspension engineers and enthusiasts to create custom suspension setups by combining over 700 different spring components for nearly unlimited tuning possibilities.

ERS Double-Spring System:

The ERS system uses a Main and Tender spring concept to deliver optimal suspension performance. The Main spring provides a linear-rate characteristic that determines the final rate of the system. When paired with a Tender spring, the system offers a softer initial rate as both springs compress together, then transitions to a firmer ending rate once the tender spring fully closes. This configuration allows precise tuning to balance road compliance with control during cornering, acceleration, and braking.

Key Features:

• Linear-rate main spring for predictable suspension behavior
• High spring travel and deflection capacity at short mounting lengths
• Shot-peened surface treatment for enhanced fatigue resistance
• Superior dynamic durability for extended component life
• Manufactured to precise tolerances for consistent performance
• Advanced corrosion protection through phosphating and epoxy coating
• Clearly imprinted with part number indicating spring rate and dimensions
• Compatible with Eibach connecting plates for Main/Tender spring combinations
• Individual protective packaging to prevent damage

This Main spring can be used as a standalone component or combined with ERS Tender or Helper springs to achieve specific suspension characteristics. Helper springs prevent the Main spring from becoming loose at full droop, while Tender springs modify the initial spring rate for fine-tuned control.