Eibach ERS Rear Coil Spring Adjuster Kit

Part #: AK31-82-071-03-02

Overview

The Eibach ERS Rear Coil Spring Adjuster Kit is a versatile upgrade designed for off-road enthusiasts and those seeking precise ride height and load capacity adjustments on their Toyota 4Runner. This kit includes adjustable threaded spring seats, ERO race springs, and bump stops, enabling you to fine-tune your vehicle’s rear suspension for optimal performance and comfort. Whether you're looking to increase load capacity, achieve a specific ride height, or enhance off-road capability, this kit provides the tools to customize your vehicle’s stance and handling. Crafted for durability and ease of use, it supports a wide range of load and height adjustments, making it ideal for overlanding, towing, or off-road adventures.

Key Features

This kit features high-quality components designed to enhance your vehicle’s suspension performance and adaptability:

• 6061-T6 billet aluminum threaded spring seats for strength and corrosion resistance
• Adjustable design allows for +0.5 to 2.0 inches of lift
• Includes ERO race springs engineered for off-road durability and responsiveness
• Bump stops to protect suspension components during heavy loads or articulation
• Designed for easy installation and reliable long-term performance
• Supports fine-tuning of rear load capacity and ride height
• Made in the USA with high-quality materials for durability and consistency

Construction & Design

The kit’s components are crafted from aircraft-grade 6061-T6 billet aluminum, ensuring lightweight strength and corrosion resistance. The threaded spring seats are machined for precise adjustment and secure fitment, allowing you to easily dial in your desired ride height. The included ERO race springs are designed specifically for off-road use, providing excellent durability and responsiveness under demanding conditions. Bump stops are integrated to prevent suspension over-compression, protecting your vehicle’s components during aggressive off-road maneuvers.

Driving Feel & Feedback

This adjuster kit helps improve your vehicle’s handling by allowing you to tailor the suspension response to your driving style and terrain. The ability to fine-tune ride height and load capacity enhances stability and comfort, especially when carrying heavy loads or navigating uneven terrain. The kit supports a more controlled and confident off-road experience, with improved articulation and suspension response.

Installation & Fitment

Installation involves replacing the factory rear coil spring seats with the adjustable threaded units, and installing the included springs and bump stops. While designed for straightforward installation, verifying fitment against your specific vehicle model and part number is recommended. Proper tools and mechanical knowledge are advised for a secure and effective upgrade.

What’s Included

The package includes all necessary components for installation:

• Adjustable threaded spring seats
• Off-road ERO race springs
• Bump stops
• Mounting hardware and instructions