Eibach ERS EIB1800.375.0300S 18-Inch Coilover Spring, 3.75-Inch Inside Diameter

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 EIB1800.375.0300S Individual Motorsport Spring is designed for racing applications that require precise suspension tuning and dependable performance. Eibach’s extensive race spring catalog supports a wide range of motorsport setups, allowing drivers and builders to optimize handling dynamics through carefully selected spring rates and lengths.

This coilover spring features a 3.75-inch inside diameter and an 18-inch free length, making it suitable for compatible race suspension systems and applications requiring maximum available travel with minimal block height. Each Eibach spring is individually tested to support consistent performance, linear response, and reliable handling characteristics. The spring is engineered with Eibach’s proven off-road durability and motorsport-focused construction for demanding racing environments.

Key Product Specifications & Technical Data

• Brand: Eibach
• Part Number: EIB1800.375.0300S
• Product Type: Individual motorsport coilover spring
• Spring Family: Eibach ERS
• Inside Diameter: 3.75 inches
• Free Length: 18 inches
• Spring Rate: 300 lb/in
• Quantity: One spring

What's Included

• One Eibach ERS individual motorsport coilover spring

Fitment depends on the vehicle, coilover system, spring perch, and suspension configuration. Verify compatibility with the applicable racing suspension manufacturer and confirm the required spring rate, length, and inside diameter before installation. This product is intended for compatible automotive motorsport applications and is not supplied as a complete coilover assembly.

Features:

• Precision Race Tuning: Provides a 300 lb/in spring rate for controlled suspension tuning in demanding motorsport applications.
• 3.75-Inch Inside Diameter: Designed for compatible coilover systems using a 3.75-inch spring platform.
• Maximum Suspension Travel: The spring design supports maximum travel while maintaining a minimal block height.
• Individually Tested: Every spring is tested by Eibach to promote linearity, consistency, and dependable performance.
• Motorsport Durability: Built with Eibach’s proven engineering for demanding race and off-road environments.
• 18-Inch Free Length: Offers an extended spring length for compatible suspension configurations and tuning requirements.

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