Eibach 1000.250.0100 ERS Race Main Coilover Spring 10 inch x 2.5 inch

The Eibach 1000.250.0100 is a high-performance race main spring designed for the Eibach ERS (Eibach Race Spring) system. This precision-engineered coilover spring delivers the muscle needed to transform engine power into track performance through optimum tire adhesion and suspension control.

ERS Double Spring System Technology:

This main spring is part of Eibach's world-renowned ERS double-spring system, which combines main and tender springs to provide superior suspension tuning flexibility. The system delivers a softer initial rate when both springs compress together, then transitions to a firmer ending rate once the tender spring fully closes. With over 700 different spring components available, the ERS system offers nearly unlimited combination possibilities for precise suspension tuning.

Key Features:

• Linear-rate characteristic that determines the final rate of the suspension system
• High spring travel and deflection capability with short mounting lengths
• Shot-peened surface treatment for enhanced durability
• High dynamic durability ensuring extended component longevity
• Manufactured to precise tolerances for consistent performance
• Superior corrosion protection through phosphating and epoxy coating
• Clearly imprinted with part number indicating spring rate and physical dimensions
• Individual protective packaging for damage-free delivery
• Block resistance for bottoming protection

This race main spring is compatible with Eibach connecting plates (inside and outside diameter options available) and can be paired with helper springs to prevent spring looseness at full droop. Ideal for racers and performance enthusiasts who demand precise suspension control, reduced body roll, and minimized squat and dive during hard cornering, acceleration, and braking.