Eibach ERS 4.00-Inch Length x 2.00-Inch ID Coil-Over Race Spring, 1,250 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 4.00-Inch Length x 2.00-Inch ID Coil-Over Spring is engineered for serious motorsport and performance suspension applications. Part number EIB0400.200.1250 uses Eibach’s proven ERS race spring design to deliver consistent, predictable suspension performance for vehicles equipped with compatible coil-over systems.

Eibach manufactures ERS springs in repeatable series production, combining extensive manufacturing experience with strict quality control. This process helps maintain a highly linear spring rate, low production tolerances, and reliable performance across demanding track, racing, and competition environments. The 1,250-pound-per-inch rate provides firm suspension control for applications requiring increased support and precise chassis response.

Designed around a 2.00-inch inside diameter and 4.00-inch free length, this coil-over spring is intended for use with compatible spring perches, dampers, and suspension hardware. Confirm the required spring rate, installed height, travel, and vehicle-specific fitment before installation. The spring is supplied as an individual component for custom suspension tuning and replacement applications.

Product Specifications and Technical Data

• Brand: Eibach
• Product Line: ERS Race Spring System
• Part Number: EIB0400.200.1250
• Application Type: Automotive coil-over suspension
• Spring Rate: 1,250 pounds per inch
• Free Length: 4.00 inches
• Inside Diameter: 2.00 inches
• Spring Quantity: One coil-over spring

What's Included

One Eibach ERS coil-over race spring. Compatible spring hardware and vehicle-specific installation components are not included unless specified separately.

Features:

• Linear spring rate: Provides consistent and predictable suspension response throughout the operating range.
• Motorsport-focused design: Developed for racing, track, and performance coil-over applications.
• High manufacturing consistency: Series production helps maintain low tolerances and repeatable spring performance.
• Suspension tuning capability: The 1,250-pound-per-inch rate supports custom chassis setup and precise handling adjustments.

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