KYB Gas-a-Just Gas Shock (REAR)

2011–2021 Jeep Grand Cherokee Normal Suspension

Part #: 5550015

Overview

The KYB Gas-a-Just Gas Shock for the rear suspension is engineered specifically for most 2011 through 2021 Jeep Grand Cherokee models equipped with normal suspension setups. This monotube shock absorber is designed to deliver superior ride quality and enhanced vehicle control by automatically adjusting to your driving conditions. Whether navigating city streets or tackling winding roads, the Gas-a-Just shock provides a smooth, comfortable ride while maintaining stability and handling precision.

Ideal for Jeep Grand Cherokee owners seeking to restore or improve their vehicle’s rear suspension performance, this shock absorber offers a reliable upgrade that balances comfort with responsive control. Its advanced design helps reduce body roll and improves alignment retention, contributing to a confident driving experience under various road and load conditions.

Key Features

The KYB Gas-a-Just Gas Shock incorporates innovative technology and robust construction to meet the demands of everyday driving and light off-road use. Key features include:

• Monotube design with a dual-chamber system for consistent damping performance
• High-pressure nitrogen gas charge eliminates air intrusion, reducing shock fade
• Air-free hydraulic piston ensures smooth and responsive shock absorption
• Strong strut bodies and reinforced brackets minimize flex and maintain alignment
• Instant automatic adjustment to changing road and driving conditions
• Durable construction designed to withstand harsh environments and extended use
• Direct fit replacement for rear shocks on normal suspension Jeep Grand Cherokee models
• Improves vehicle stability, handling, and overall ride comfort

Construction & Design

KYB’s Gas-a-Just shocks feature a rugged monotube design that separates the gas and hydraulic fluid chambers, preventing aeration and ensuring consistent damping throughout the shock’s stroke. The dual-chamber system uses high-pressure nitrogen gas to maintain pressure and eliminate foaming, which can degrade shock performance over time.

The shock body and mounting brackets are constructed from high-strength materials to resist bending and flexing, preserving proper suspension geometry and alignment. This robust build quality contributes to long-lasting durability and reliable performance, even under demanding driving conditions.

Installation & Fitment

This KYB Gas-a-Just Gas Shock is a direct replacement for the rear shocks on most 2011 to 2021 Jeep Grand Cherokee models equipped with normal suspension. Installation requires no modifications and can be completed using standard automotive tools. It is recommended to replace shocks in pairs to maintain balanced handling and ride quality.

Professional installation is advised for optimal results, but experienced DIY enthusiasts can perform the swap with appropriate safety precautions and vehicle support.

What's Included

• One (1) KYB Gas-a-Just Gas Shock absorber (rear)
• Mounting hardware as required for installation
• Installation instructions (if provided)

Ideal For

This shock absorber is ideal for Jeep Grand Cherokee owners who want to restore factory-level ride comfort and handling or upgrade their rear suspension performance without altering the vehicle’s original suspension setup. It suits daily drivers, weekend adventurers, and those seeking a reliable, durable shock that adapts to varying road conditions.

KYB is a major shock and strut manufacturer supplying both OEM and aftermarket suspension components, with options that range from OE-replacement ride quality to more performance-oriented control. For enthusiasts, KYB upgrades are a solid way to restore damping performance and tighten handling feel with proven manufacturing scale and consistency.