Eibach 1200.250.0140 ERS Race Main Coilover Spring

The Eibach 1200.250.0140 is a precision-engineered race main spring designed for high-performance coilover suspension systems. This spring is part of Eibach's renowned ERS (Eibach Race Spring) system, which allows suspension tuners to create custom spring combinations for optimal track performance and handling characteristics.

ERS Double Spring System:

The ERS system utilizes a main and tender spring concept that delivers a softer initial spring rate when both springs are compressed together, then transitions to a firmer ending rate once the tender spring fully compresses. The main spring features a linear-rate characteristic and determines the final rate of the complete system. With over 700 different spring components available, the ERS system provides nearly unlimited tuning possibilities for precise suspension setup.

Key Features:

• High spring travel and deflection capacity with exceptional end loads at short mounting lengths
• Shot-peened surface treatment for superior fatigue resistance
• Precise manufacturing tolerances for consistent performance
• Advanced corrosion protection through phosphating and epoxy coating
• Block resistance for maximum durability
• High dynamic durability ensures extended component longevity
• Part number clearly imprinted on spring indicating spring rate and physical dimensions for easy identification
• Individual protective packaging to prevent damage during shipping and storage

This main spring is designed to work with Eibach tender springs and helper springs (sold separately) to create a complete custom suspension solution. Helper springs prevent the main spring from becoming loose in the spring seat at full droop, while tender springs allow tuners to adjust initial spring rates. Connecting plates are available separately for joining main and tender springs in various configurations.