Eibach 1200.250.0110 ERS Race Main Coilover Spring

The Eibach 1200.250.0110 is a precision-engineered race main spring designed for the ERS (Eibach Race Spring) double-spring system. This high-performance coilover spring provides the critical foundation for optimizing suspension performance in racing and high-performance applications, transforming engine power into traction through superior road adhesion.

ERS Double-Spring System Technology:

The ERS system utilizes a Main and Tender spring configuration that delivers exceptional tuning flexibility. The Main spring features a linear-rate characteristic that determines the final rate of the suspension system. When combined with a Tender spring, the system provides a softer initial rate as both springs compress together, then transitions to the desired firmer ending rate once the tender spring fully closes. This approach allows suspension engineers to precisely balance comfort and control, ensuring the system is compliant enough to maintain constant road contact over irregularities while remaining firm enough to minimize body roll, squat, and dive during aggressive driving.

Key Features:

• Linear-rate characteristic for predictable, consistent suspension response
• Compatible with over 700 different ERS spring components for nearly unlimited tuning combinations
• High spring travel and deflection capability with short mounting lengths
• Shot-peened surface treatment for enhanced fatigue resistance
• Exceptional dynamic durability for extended component longevity
• Manufactured to precise tolerances for consistent performance
• Advanced corrosion protection through phosphating and epoxy coating
• Clearly imprinted with part number indicating spring rate and physical dimensions
• Individual protective packaging to prevent damage during shipping and storage

System Compatibility:

This Main spring is designed to work seamlessly with Eibach Tender springs (available in linear-rate and progressive-rate options), Helper springs (for preventing spring looseness at full droop), and connecting plates (available in inside and outside diameter configurations). The modular ERS system enables racers and enthusiasts to fine-tune suspension characteristics to match specific track conditions, driving styles, and vehicle setups.

Engineered and manufactured by Eibach, the world leader in suspension technology, this race main spring delivers the performance, reliability, and adjustability demanded by professional racing teams and serious enthusiasts alike.