Eibach ERS 4.00-Inch Race Spring, 2.25-Inch Inside Diameter, 2,500 lb/in Rate

Eibach's ERS line has evolved over the years to be the world's most prominent, comprehensive and superior Race Spring System. Eibach Race Springs are all manufactured in series production, often repeated, with a strong manufacturing experience. Thus, Eibach constantly achieves the most linear spring characteristic (rate) while maintaining the lowest tolerances and the highest quality in the industry.

The Eibach ERS 0400.225.2500 is a professional-grade race spring designed for coil-over suspension systems that demand consistent performance, predictable handling, and precise tuning. As part of Eibach’s renowned ERS Race Spring System, this spring is manufactured in repeated series production to deliver dependable spring characteristics and tight quality control.

With a 4.00-inch free length, 2.25-inch inside diameter, and 2,500 lb/in spring rate, this Eibach coil-over spring is suited for competition applications requiring substantial support and controlled suspension movement. Its linear spring behavior helps maintain consistent force throughout compression, allowing suspension engineers and racers to make accurate setup changes while preserving predictable vehicle response.

Eibach applies extensive manufacturing experience to the ERS line, producing springs with low rate tolerances and reliable dimensional consistency. This makes the 0400.225.2500 a strong choice for race teams, performance fabricators, and enthusiasts building or refining a custom coil-over suspension setup. The spring is intended for automotive racing and performance applications; compatibility should be verified against the coil-over hardware, spring perch, and vehicle setup before installation.

What's Included: One Eibach ERS race coil-over spring. Installation hardware and additional suspension components are not included unless specified by the application.

Features:

• Race-Proven ERS Design: Part of Eibach’s comprehensive ERS Race Spring System for professional and high-performance coil-over applications.
• Consistent Linear Rate: Provides predictable suspension force and handling characteristics throughout the operating range.
• High Spring Rate: The 2,500 lb/in rate supports competition setups requiring substantial suspension control and resistance to compression.
• Precision Manufacturing: Series production, low tolerances, and Eibach quality standards promote repeatable performance and reliable tuning.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: false