Eibach ERS 4.00 in. Length x 2.00 in. ID Coil-Over Spring, 350 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 Coil-Over Spring is a precision-engineered race spring designed for motorsports, performance suspension systems, and demanding coil-over applications. Built as part of Eibach’s renowned ERS line, this spring delivers consistent, repeatable performance with a 350 lb/in spring rate for controlled suspension response and predictable vehicle handling.

Eibach manufactures ERS springs in series production using proven processes and extensive spring-making expertise. This approach helps maintain a highly linear spring characteristic, tight production tolerances, and dependable quality from spring to spring. The result is a performance component suitable for suspension tuning where accurate spring rates and consistent behavior are essential.

Designed for compatible coil-over systems, the Eibach ERS spring features a 4.00-inch free length and a 2.00-inch inside diameter. Its compact race-oriented format makes it well suited for custom suspension setups and applications requiring precise ride-height and handling adjustments. Verify suspension compatibility, available travel, and required spring rate before installation.

What's Included: One Eibach ERS coil-over spring. Spring hardware, adjusters, seats, and other installation components are not included unless specified by the vehicle or suspension system manufacturer.

Fitment: Universal motorsports and custom coil-over applications when the spring dimensions and rate match the suspension system requirements. Vehicle-specific fitment data was not provided.

Features:

• 350 lb/in spring rate: Provides predictable suspension control and supports precise chassis tuning.
• Linear spring characteristic: Delivers consistent force progression for repeatable handling behavior.
• ERS race spring design: Developed for motorsports and high-performance coil-over suspension systems.
• Series production quality: Manufactured with repeatable processes, low tolerances, and consistent performance.

Air Freight Prohibited: false
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Part Type: automotive
Epa: N/A
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Regular Stock: false