Eibach 1000.300.0400S Off-Road Coilover Spring 400 lb 3.00in ID x 10in

Vehicle Fitment

• Universal application - designed for use with compatible coilover suspension systems
• Engineered for off-road, rally, and performance suspension builds
• Not specific to any particular vehicle make/model

Features

• ERS off-road coilover spring optimized for maximum articulation and performance
• 400 lbs/in spring rate for a balanced mix of comfort and handling support
• Precision-formed high-tensile spring steel for strength and consistency
• Silver powder-coat finish for corrosion and abrasion resistance
• Generous free length to maximize travel and articulation
• Individually tested to ensure consistent performance and rate accuracy
• Lightweight design reduces unsprung mass, improving suspension dynamics
• Perfect for custom off-road, rally, desert racing, and performance suspension builds

Specifications

• Part Number: 1000.300.0400S
• Type: ERS off-road coilover spring
• Spring Rate: 400 lbs/in
• Inside Diameter: 3.00 in (76.2 mm)
• Free Length: 10.00 in (254 mm)
• Block Height: ~4.75 in (120 mm)
• Travel: ~7.00 in (178 mm)
• Load at Block Height: ~1,800 lbs
• Weight: ~4.40 lbs (2 kg)

Included Components

• 1x Eibach 1000.300.0400S coilover spring

Product Description

The Eibach 1000.300.0400S ERS off-road coilover spring is designed for maximum articulation and performance on rough terrain. With a **400 lbs/in** spring rate, **3.00 in inside diameter**, and **10.00 in free length**, this spring offers a balanced support system with a higher rate, ideal for off-road racing, rally, and custom suspension setups that require durability and responsiveness over varied surfaces.

Made from high-tensile spring steel and finished in a durable silver powder coat, the 1000.300.0400S offers superior corrosion and abrasion resistance. Its extended free length and optimized block height provide generous travel to maximize wheel articulation during off-road use, while the spring's light weight reduces unsprung mass for improved suspension dynamics. Each spring is individually tested to ensure consistency. Verify compatibility with your coilover system before installation for best results.