Eibach ERS 10.00-Inch Coilover Spring, 3.75-Inch Inside Diameter, 400 lb/in Rate – EIB1000.375.0400S

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 3.75" Inside Diameter Coilover Springs Available in a Full Range of Rates and Lengths
• Maximum Travel in Combination with Smallest Block Heights
• Legendary Eibach Off-Road Durability and Performance
• Highest Linearity and Guaranteed Consistency
• Each Spring Individually Tested

The Eibach ERS individual motorsport spring is designed for race teams and performance enthusiasts who need precise suspension tuning across a broad range of applications. This coilover spring features a 3.75-inch inside diameter and a 400 lb/in spring rate, providing a reliable foundation for optimizing handling balance, ride control, and suspension response.

Built from Eibach’s extensive motorsport spring development experience, the ERS spring delivers consistent performance under demanding racing conditions. Its design helps maximize suspension travel while maintaining a compact spring package, allowing engineers and drivers to fine-tune vehicle dynamics without compromising durability. Each spring is individually tested to support dependable rate consistency and predictable performance.

• Application: Individual motorsport coilover spring for racing and performance suspension systems
• Inside Diameter: 3.75 inches for compatible coilover spring hardware
• Free Length: 10.00 inches
• Spring Rate: 400 lb/in for controlled suspension support and tuning flexibility
• Performance Design: Maximizes suspension travel while minimizing block height
• Durability: Engineered for demanding off-road and motorsport environments
• Consistency: Designed for high linearity and repeatable spring behavior
• Quality Control: Each spring is individually tested by Eibach

What's Included: One Eibach ERS individual motorsport coilover spring. Verify spring diameter, free length, spring rate, and coilover compatibility before installation. This product is intended for use with compatible racing suspension components and is not supplied as a complete coilover assembly.

Fitment: Universal motorsport application; vehicle-specific fitment depends on the coilover system, spring perches, and suspension setup. Professional installation and suspension tuning are recommended.

Features:

• Application: Individual Eibach ERS motorsport coilover spring for racing and performance suspension systems
• Inside Diameter: 3.75 inches for compatible coilover spring hardware
• Free Length: 10.00 inches
• Spring Rate: 400 lb/in for controlled suspension support and tuning flexibility
• Performance Design: Maximizes suspension travel while minimizing block height
• Durability: Engineered for demanding off-road and motorsport environments
• Consistency: Designed for high linearity and repeatable spring behavior
• Quality Control: Each spring is individually tested by Eibach

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