KYB Gas-a-Just Shock

Fits 2010–2024 Toyota 4Runner, 2010–2014 FJ Cruiser, and 2010–2014 Lexus GX460

Part #: 5540040

Overview

The KYB Gas-a-Just Shock is a high-quality rear suspension component designed specifically for select Toyota and Lexus models. Engineered to restore and enhance your vehicle’s ride quality, these shocks provide a smooth, controlled ride while maintaining excellent handling characteristics. Whether you’re replacing worn-out shocks or upgrading for improved performance, the Gas-a-Just shocks are an ideal choice for drivers seeking durability and reliable support in everyday driving or light off-road conditions. Designed for vehicles with RWD configurations, these shocks help maintain proper ride height and stability, ensuring your vehicle responds predictably over various road surfaces. They are built to withstand the rigors of daily use, offering consistent performance and long-lasting durability.

Key Features

The KYB Gas-a-Just Shock features a robust design tailored to meet the demands of your vehicle’s suspension system. Key features include:

• High-pressure gas design for consistent damping performance
• Durable steel construction with corrosion-resistant coating
• Optimized valving for improved ride comfort and handling
• Direct bolt-on replacement for easy installation
• Engineered to restore factory ride height and stability
• Supports vehicle control during cornering and braking
• Suitable for daily driving and light off-road use

Construction & Design

The KYB Gas-a-Just shocks are constructed with high-strength steel components and feature a gas-charged design that helps maintain consistent damping performance under varying conditions. The shocks are coated to resist corrosion, ensuring longevity and reliable operation over time. Their design emphasizes durability and precise control, making them a dependable choice for restoring your vehicle’s suspension performance.

Installation & Fitment

These shocks are designed as direct replacements for the rear suspension on compatible Toyota 4Runner, FJ Cruiser, and Lexus GX460 models within the specified years. Installation typically involves standard hand tools and can be completed with basic mechanical knowledge, making them suitable for DIY enthusiasts and professional technicians alike.

What’s Included

The package includes one KYB Gas-a-Just rear shock absorber, ready for installation on the specified vehicle models. Hardware and mounting components are integrated, ensuring a straightforward replacement process.

Ideal For

This product is ideal for owners seeking to restore factory ride quality, improve handling, or replace aging shocks on their Toyota or Lexus SUV. It’s well-suited for daily drivers, light off-road enthusiasts, and those looking for a reliable, long-lasting suspension upgrade.