Eibach ERS 3.75" I.D. | 20 inch Length | 400 lbs/inch

Universal Performance Spring - 20 Inch Length, 3.75 Inch Inside Diameter, 400 lbs/inch Rate

Part #: 2000.375.0400S

Overview

The Eibach ERS (External Reservoir Spring) is a high-performance coil spring designed for enthusiasts seeking precise suspension tuning and enhanced handling. With a 20-inch length, 3.75-inch inside diameter, and a robust 400 lbs/inch spring rate, this spring offers exceptional support and stability for a variety of custom suspension setups. Whether you're building a custom off-road vehicle, a track-ready build, or upgrading your existing suspension system, the ERS spring provides the durability and performance you need.

Engineered by Eibach, a trusted name in suspension technology, this spring is ideal for those who demand reliable, consistent performance. Its high load capacity and precise dimensions make it suitable for applications requiring a firm ride and improved chassis control. If you're looking to optimize your vehicle's handling characteristics, the ERS spring is an excellent choice to support your performance goals.

Key Features

The Eibach ERS spring incorporates advanced design and construction features to deliver superior performance and durability:

• High-quality steel construction ensures long-lasting strength and resistance to fatigue under demanding conditions.
• Precisely wound coil with a 400 lbs/inch rate provides a firm, controlled ride ideal for performance applications.
• 20-inch length and 3.75-inch inside diameter allow for versatile installation options across various suspension setups.
• Designed to support aggressive driving, off-road adventures, or custom coilover configurations requiring high load capacity.
• Manufactured with tight tolerances to ensure consistent spring rate and reliable performance over time.
• Optimized for use in custom suspension builds, off-road vehicles, or racing applications where precise spring support is critical.

Construction & Design

The Eibach ERS spring features a robust steel coil design, meticulously wound to achieve the specified 400 lbs/inch rate. Its 20-inch length and 3.75-inch inside diameter are engineered for compatibility with a wide range of suspension components. The spring's construction emphasizes durability, resistance to corrosion, and consistent performance under load. Its design ensures that it maintains its shape and support characteristics even after prolonged use in demanding environments. The high-quality materials and precise manufacturing processes reflect Eibach's commitment to excellence in suspension technology.

Installation & Fitment

The Eibach ERS spring is designed for straightforward installation in compatible suspension systems. Its dimensions and construction allow for bolt-on replacement or integration into custom coilover assemblies. No special modifications or tuning are typically required, but it is recommended to consult your vehicle's suspension specifications or a professional installer to ensure proper fitment. Proper installation will maximize performance benefits and ensure safety.

• Compatible with custom suspension setups, off-road builds, or racing applications requiring high spring support.
• Installation may involve standard coil spring removal and replacement procedures; no cutting or drilling is necessary.

What's Included

• One high-performance coil spring with specified dimensions and load capacity
• Installation instructions (if provided by manufacturer)

Ideal For

• Performance enthusiasts seeking precise suspension tuning
• Off-road builders requiring high load support and durability
• Track-day or racing applications demanding consistent spring support
• Custom suspension projects where specific spring rates and dimensions are needed