Eibach ERS 4-Inch Motorsport Coilover Spring, 2.5-Inch Inner Diameter, Part Number EIB0400.250.0300

Renowned for our extensive catalog of over 1,500 precision engineered race springs. Eibach race springs offer unparalled customization and performance optimization across a wide spectrum of racing applications. From shocks to pull-bars we offer a wide range of springs solutions to fine tune the handling dynamics of your race car. Individual Motorsport Spring

• Eibach Coilover Springs Available in a Full Range of Rates and Sizes
• Maximum Travel in Combination with Smallest Block Heights
• Highest Linearity and Guaranteed Consistency
• Ultra-Lightweight for Reduced Unsprung Mass
• Each Spring Individually Tested

The Eibach ERS Motorsport Coilover Spring is a precision-engineered racing spring designed for suspension tuning across a wide range of motorsport applications. As part of Eibach’s extensive catalog of race springs, this individual spring helps drivers and builders optimize handling characteristics, suspension response, and vehicle balance.

Built for use with compatible coilover systems, the Eibach ERS spring is designed to provide maximum suspension travel while maintaining a compact block height. Its consistent linear performance supports predictable handling throughout the suspension’s operating range, making it suitable for racing applications that demand repeatable results. The lightweight construction also helps reduce unsprung mass, while each spring is individually tested to support dependable performance and quality control.

Key product specifications and technical data:

• Brand: Eibach
• Product line: ERS Motorsport Spring
• Part number: EIB0400.250.0300
• Spring type: Individual coilover racing spring
• Free length: 4 inches
• Inner diameter: 2.5 inches
• Application: Motorsport and racing suspension systems
• Construction benefit: Lightweight design with tested consistency

What’s included: One Eibach ERS individual motorsport coilover spring. Coilover hardware, spring seats, adjustment collars, and other installation components are not included unless supplied by the compatible suspension system.

Fitment depends on the coilover assembly, spring seat configuration, required spring rate, and available suspension clearance. Verify compatibility with the vehicle, shock body, spring platform, and intended racing setup before installation. Eibach offers ERS springs in a broad range of rates and sizes to support application-specific suspension tuning.

Features:

• Precision-engineered Eibach ERS coilover spring for motorsport and racing suspension applications
• Designed to provide maximum suspension travel with a compact block height
• High linearity and consistent performance for predictable suspension response
• Lightweight construction helps reduce unsprung mass, and each spring is individually tested

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: false
Units Per Sku: 1