Rancho RS5000X Rear Shock: Dodge Durango 2004-2009

Rancho RS5000X Rear Shock

2004–2009 Dodge Durango

RS55389

Overview:

The Rancho RS5000X Rear Shock is engineered to enhance the suspension performance of your Dodge Durango from 2004 through 2009. Designed for drivers who demand superior handling both on and off the road, this shock absorber features advanced valving technology that improves ride quality, vehicle control, and durability. Whether navigating rough terrain or cruising city streets, the RS5000X delivers a smoother, more controlled driving experience by effectively managing compression and rebound forces.

Built to withstand harsh conditions and temperature extremes, this shock absorber is an ideal upgrade for Durango owners seeking reliable, long-lasting suspension components that maintain consistent performance over time.

Key Features:

The Rancho RS5000X Rear Shock incorporates several innovative technologies and design elements to optimize your vehicle’s suspension system:

• Exclusive Valving System: Custom-tuned rebound and compression valving for improved shock motion control and reduced disc flutter.
• Advanced Compression Functionality: Enhances handling by regulating fluid transfer to absorb impacts smoothly.
• Low-Friction, Self-Lubricating Seal: Retains gas and oil for quicker rebound and smoother compression cycles.
• 16mm Nitro-Carburized Piston Rod: Resists corrosion and scuffing for extended durability.
• 35mm Sintered Iron Piston: Provides enhanced structural integrity under demanding conditions.
• Polyurethane Rebound Bumper and Rubber Bushings: Absorb ride harshness for a more comfortable experience.
• Large Twin-Tube Body with All-Weather Fluid: Maintains cooler operation and consistent performance in temperatures from -40°F to 248°F.
• Nitrogen Gas Pressurized to 150 PSI: Minimizes damping fade and foaming for reliable shock response.
• Polyvinyl Protective Boot: Shields the shock from dirt and debris, extending service life.
• Progressive Engagement Valving: Reduces initial impacts at low speeds to minimize rough ride sensations.

Construction & Design:

The RS5000X Rear Shock is constructed with high-quality materials and precision engineering to ensure longevity and performance. Its 16mm nitro-carburized piston rod offers superior resistance to wear and corrosion, while the 35mm sintered iron piston enhances strength and durability. The twin-tube design filled with all-weather fluid allows the shock to operate efficiently across a wide temperature range, preventing overheating and maintaining consistent damping characteristics.

Additional features such as the low-friction, self-lubricating seal and polyvinyl protective boot contribute to smoother operation and protection against environmental elements. Double-welded loops at stress points further reinforce the shock’s structural integrity, making it capable of handling demanding driving conditions.

Installation & Fitment:

The Rancho RS5000X Rear Shock is a direct-fit replacement designed specifically for Dodge Durango models from 2004 to 2009, including Adventurer (2006–2008), Limited (2004–2009), Limited Hybrid (2009), SE (2009), SLT (2004–2009), ST (2004–2005), and SXT (2005–2008) trims. Installation requires no modifications and can be completed using standard tools by experienced DIYers or professional technicians. This ensures a hassle-free upgrade that restores or enhances your vehicle’s suspension performance.

What's Included:

• One Rancho RS5000X Rear Shock Absorber (Part # RS55389)
• Protective polyvinyl boot installed
• Manufacturer’s Limited Lifetime Warranty documentation

Ideal For:

This shock absorber is ideal for Dodge Durango owners seeking improved ride comfort, enhanced handling, and increased durability for daily driving, towing, or off-road adventures. It suits enthusiasts who want a reliable suspension upgrade that balances performance with longevity and is engineered specifically for their vehicle’s suspension dynamics.