Eibach 0800.225.0475 ERS Race Main Coilover Spring

The Eibach ERS (Eibach Race Spring) Main Spring is engineered to provide the precise suspension tuning needed to transfer engine power to the track through optimum tire adhesion. This linear-rate coilover spring is a key component in Eibach's world-renowned double-spring system, allowing racers and enthusiasts to create custom suspension setups from over 700 different spring components.

ERS Double-Spring System:

The ERS system combines a Main spring with a Tender spring to deliver a softer initial rate when both springs compress together, then transitions to a firmer ending rate once the Tender spring fully closes. This Main spring provides the linear-rate characteristic that determines the final rate of your suspension system, balancing the need for compliance over road irregularities while minimizing body roll, squat, and dive during aggressive driving.

Key Features:

• Linear-rate characteristic for predictable suspension behavior
• Compatible with Eibach ERS Tender and Helper springs for unlimited tuning combinations
• High spring travel and deflection capability at short mounting lengths
• Shot-peened surface treatment for superior fatigue resistance
• High dynamic durability for extended component life
• Manufactured to precise tolerances for consistent performance
• Phosphate and epoxy coating for excellent corrosion protection
• Imprinted with part number indicating spring rate and physical dimensions for easy identification
• Individual protective packaging to prevent damage during storage and shipping

Use with Eibach Helper springs to prevent spring looseness at full droop, and Connecting Plates to attach Tender springs for complete suspension customization.