Featuring a unique, exclusive valving system and advanced compression functionality, Rancho® RS5000™X shocks deliver improved overall on- and off-road handling and performance.

Additional Information

Rancho RS5000X RS55251 Suspension Shock Absorber for Ford F-150

Part Type

Suspension Shock Absorber

Features and Benefits

• BUILT TO LAST -- Low-friction, self-lubricating seal retains gas and oil for quicker rebound and smoother compression while the application-specific piston delivers heightened control of shock motion due to the expanded piston area
• BUY WITH CONFIDENCE -- Comes with Rancho’s Limited Lifetime Warranty
• HANDLES EXTREME TEMPERATURE CHANGES -- Large twin-tube body filled with all-weather fluid allows for cooler operation, increased vehicle control and ability to withstand internal temperatures of -40 to 248°F
• IMPROVED HANDLING AND PERFORMANCE -- Cross Tuned technology featuring exclusive rebound valving system and advanced compression phase improves overall handling and performance on and off road
• MAINTAINS VEHICLE CONTROL -- Compression Control Valve is custom-tuned for each vehicle to regulate fluid transfer to absorb impacts without disc flutter and help maintain shock motion control
• MINIMIZES ROUGH RIDE -- Exclusive Progressive Engagement Valving is custom-tuned for each vehicle to help reduce initial impacts at low speeds and minimizes a rough ride
• REDUCES FADE -- Nitrogen gas pressurized to 150 PSI to minimize air-to-oil mixture to reduce damping performance fade and foaming
• SMOOTH PERFORMANCE -- Polyurethane rebound bumper and rubber bushings help absorb ride harshness while the fluon-banded piston enhances responsiveness to changing road conditions for an overall smoother ride
• STRONG AND DURABLE -- Features a 16mm nitro-carburized piston rod to resist scuffs & corrosion, double-welded loops at stress areas, 35mm sintered iron piston for enhanced structural integrity and polyvinyl protective boot

Product Downloads

#	Document Type	Download
1.	Material Safety Data Sheet

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

• BUILT TO LAST -- Low-friction, self-lubricating seal retains gas and oil for quicker rebound and smoother compression while the application-specific piston delivers heightened control of shock motion due to the expanded piston area
• BUY WITH CONFIDENCE -- Comes with Rancho’s Limited Lifetime Warranty
• HANDLES EXTREME TEMPERATURE CHANGES -- Large twin-tube body filled with all-weather fluid allows for cooler operation, increased vehicle control and ability to withstand internal temperatures of -40 to 248°F
• IMPROVED HANDLING AND PERFORMANCE -- Cross Tuned technology featuring exclusive rebound valving system and advanced compression phase improves overall handling and performance on and off road
• MAINTAINS VEHICLE CONTROL -- Compression Control Valve is custom-tuned for each vehicle to regulate fluid transfer to absorb impacts without disc flutter and help maintain shock motion control
• MINIMIZES ROUGH RIDE -- Exclusive Progressive Engagement Valving is custom-tuned for each vehicle to help reduce initial impacts at low speeds and minimizes a rough ride
• REDUCES FADE -- Nitrogen gas pressurized to 150 PSI to minimize air-to-oil mixture to reduce damping performance fade and foaming
• SMOOTH PERFORMANCE -- Polyurethane rebound bumper and rubber bushings help absorb ride harshness while the fluon-banded piston enhances responsiveness to changing road conditions for an overall smoother ride
• STRONG AND DURABLE -- Features a 16mm nitro-carburized piston rod to resist scuffs & corrosion, double-welded loops at stress areas, 35mm sintered iron piston for enhanced structural integrity and polyvinyl protective boot

Perform a suspension upgrade with Rancho RS5000X shock absorbers—to elevate the overall handling and performance of your ride, both on and off-road. The core of these innovative shocks is their unique and patented rebound valving system, and the advanced compression phase of the shock absorber. These shocks are built to last, with double-welded loops, high-capacity twin-tube construction, and a nitro-carburized rod. So, it doesn't matter if your road warrior sticks to the pavement or kicks up some dust—RS5000X shock absorbers will improve your ride all around.

Additional features and benefits include:
• Progressive engagement valving (compression cycle)
• Tuned compression control valve
• Gas pressurization of shock
• Black natural rubber bushings
• Glass-filled Fluon banded piston
• Rebound bumper
• Protective boot
• Low-friction, self-lubricating seal

Please note that this information serves as a fitment guide only. For specific fitment questions or clarifications, please contact us, as manufacturers may introduce variations and modifications during model year or regional revisions. While we strive to provide accurate data, fitment details may vary by region; therefore, compatibility outside the listed region and submodel variant cannot be guaranteed.

Detailed Compatibility

This may not be an exhaustive list of compatible vehicles. Please reach out to one of our representatives if you are unsure or do not see your vehicle here.