Eibach 0900.225.0350 ERS Race Main Coilover Spring

The Eibach 0900.225.0350 is a high-performance race main spring designed for use in Eibach's renowned ERS (Eibach Race Spring) double-spring system. This precision-engineered coilover spring provides the foundation for optimum suspension tuning, delivering the perfect balance between compliance and control needed to transfer power to the track through maximum tire adhesion.

ERS Double-Spring System:

This main spring is part of Eibach's modular ERS system, which offers over 700 individual spring components that can be combined to create nearly unlimited suspension configurations. 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 features a linear-rate characteristic and determines the final rate of the complete system.

Key Features:

• Linear-rate characteristic for predictable, consistent performance
• Shot-peened surface treatment for enhanced fatigue resistance
• High spring travel capability with excellent deflection at short mounting lengths
• Superior block resistance for demanding race applications
• High dynamic durability ensuring extended component life
• Manufactured to precise tolerances for exact tuning
• Advanced corrosion protection through phosphating and epoxy coating
• Clearly imprinted with part number indicating spring rate and physical dimensions
• Compatible with Eibach connecting plates for tender spring configurations

Designed for suspension engineers and racing enthusiasts who demand precision tuning capability, this main spring allows you to dial in the exact suspension characteristics needed for your specific track conditions and driving style.