Eibach 1000.250.0162 ERS Race Main Coilover Spring

The Eibach ERS (Eibach Race Spring) Main Spring is a precision-engineered coilover component designed for racing applications and high-performance suspension tuning. This linear-rate spring serves as the foundation of Eibach's renowned double-spring system, providing the muscle needed to transfer engine power to the track through optimum tire adhesion.

ERS Double-Spring System:

The ERS system combines Main and Tender springs to deliver progressive suspension characteristics. The Main spring determines the final rate of the system and provides consistent linear compression throughout its range. When paired with a Tender spring, the system offers a softer initial rate as both springs compress together, then transitions to the firmer Main spring rate once the Tender spring fully compresses. This dual-rate behavior allows precise tuning of body roll, squat, and dive characteristics while maintaining road contact over irregular surfaces.

Key Features:

• Linear-rate spring design for predictable, consistent compression characteristics
• Compatible with over 700 ERS components for virtually unlimited tuning combinations
• High spring travel and deflection capacity at compact mounting lengths
• Shot-peened surface treatment for superior fatigue resistance
• Phosphate and epoxy coating provides exceptional corrosion protection
• Precision manufacturing with tight tolerances for reliable performance
• Part number imprinted on spring indicates spring rate and physical dimensions
• High block resistance prevents coil binding under extreme compression
• Compatible with Eibach connecting plates for Main/Tender spring combinations

This Main spring is designed for use with coilover shock absorbers and can be combined with Helper springs to prevent spring unseating at full droop extension, or with Tender springs to create custom progressive-rate suspension systems for racing and performance applications.