Eibach 0800.225.0375 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, designed to deliver the precise balance between compliance and control needed to transfer engine power to the track through optimal tire adhesion.

ERS Double-Spring System Technology:

The ERS system utilizes a sophisticated Main and Tender spring concept that provides exceptional tuning flexibility. The Main spring features a linear-rate characteristic and determines the final rate of the complete 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 progressive behavior allows for superior handling of road irregularities while maintaining firm control during cornering, acceleration, and braking.

Key Features:

• Linear-rate characteristic for predictable, consistent performance
• Compatible with over 700 different ERS components for nearly unlimited suspension tuning combinations
• High spring travel and deflection capability with short mounting lengths
• Shot-peened surface treatment for enhanced fatigue resistance
• Precision manufacturing with tight 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
• Engineered for maximum dynamic durability and component longevity

This Main spring is designed to work seamlessly with Eibach Tender springs, Helper springs, and connecting plates to create a fully customizable suspension system. Whether you're a professional suspension engineer or performance enthusiast, the Eibach ERS system provides the precision tuning capability needed to optimize your vehicle's handling characteristics.