KYB Gas-A-Just Rear Shock

1965–1969 Chrysler 300, 2006–2010 Dodge Charger, 2011–2014 Dodge Charger, 2015–2023 Dodge Challenger, 2015–2023 Dodge Charger

Part #: KG5512

Overview

The KYB Gas-A-Just Rear Shock is engineered to enhance the rear suspension performance of classic and modern muscle cars, including the Chrysler 300 and Dodge Charger and Challenger models spanning from 1965 through 2023. Designed for enthusiasts who demand improved handling and ride quality, these shocks provide a firmer, more responsive driving experience without compromising comfort. Whether tackling aggressive cornering or cruising on the highway, the Gas-A-Just shocks reduce body roll and maintain consistent vehicle stability, restoring and elevating the original suspension dynamics.

Ideal for drivers looking to replace worn factory shocks or upgrade their muscle car’s rear suspension, KYB’s Gas-A-Just shocks offer a reliable, direct-fit solution that enhances control and confidence behind the wheel.

Key Features

KYB Gas-A-Just shocks incorporate advanced technology and durable materials to deliver superior performance and longevity. Key features include:

• High-pressure monotube design for consistent damping and improved heat dissipation
• Seamless steel cylinder construction for enhanced strength and corrosion resistance
• Triple-chrome plated piston rod to reduce wear and extend shock life
• Gas-charged technology to minimize aeration and maintain smooth operation
• Direct-fit replacement for easy installation without modifications
• Improved handling with reduced body roll and enhanced vehicle stability
• Durable construction designed to withstand demanding driving conditions
• Optimized for muscle car suspension geometry and weight distribution

Construction & Design

The KYB Gas-A-Just rear shock features a robust monotube design that separates the gas and oil chambers with a floating piston, ensuring consistent damping performance under all driving conditions. The seamless steel cylinder enhances structural integrity and resists corrosion, extending the shock’s service life. Additionally, the piston rod is triple-chrome plated to reduce friction and prevent premature wear, contributing to long-lasting, reliable performance tailored specifically for the rear suspensions of Dodge Charger, Challenger, and Chrysler 300 models.

Installation & Fitment

These shocks are engineered as direct replacements for the rear suspension of 1965–1969 Chrysler 300, 2006–2010 Dodge Charger, 2011–2014 Dodge Charger, and 2015–2023 Dodge Charger and Challenger models. Installation is straightforward and requires no special modifications or additional components. Vehicle owners can expect a precise fit that maintains factory suspension geometry and alignment, ensuring optimal performance and safety.

What's Included

• One KYB Gas-A-Just rear shock absorber (Part # KG5512)
• Installation instructions

Ideal For

This shock absorber is perfect for muscle car enthusiasts and daily drivers seeking to restore or enhance the rear suspension performance of their Dodge Charger, Challenger, or Chrysler 300. It is well-suited for those wanting improved handling, reduced body roll, and a more controlled ride without sacrificing comfort. Whether replacing worn factory shocks or upgrading a performance build, the KYB Gas-A-Just rear shock offers a dependable and effective suspension solution.

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.