Rancho RS5000X 4″ Rear Lift Shocks for 2004-2008 Ford F-150 4WD

Description
Rancho RS5000X 4″ Rear Lift Shocks for 2004-2008 Ford F-150 4WD

Rancho RS5000X 4″ Rear Lift Shocks for 2004-2008 Ford F-150 4WD

Part Number: RS55287

Summary: The Rancho RS5000X series features a cross-tuned twin-tube design engineered to enhance both on-road comfort and off-road durability. Specifically configured for vehicles with a 4-inch rear lift, these shocks utilize a unique progressive engagement valving system to minimize harshness during initial impacts. This setup provides the ideal balance of smooth street performance and rugged resistance for your Ford F-150 or Lincoln Mark LT.

Features

• Twin-Tube Gas Pressure: A 2.25-inch diameter reserve tube provides increased oil capacity to ensure cooler operating temperatures and consistent damping during heavy use.
• Progressive Engagement Valving: Custom-tuned internal valving provides a smooth transition between low and high-speed impacts to ensure maximum control on uneven terrain.
• Nitro-Carburized Piston Rod: A heavy-duty 16mm rod provides superior corrosion resistance and structural integrity to ensure long-term reliability in harsh environments.
• Protective Boot: The included red polyvinyl accordion boot provides a physical barrier against debris and moisture to ensure the longevity of the oil seal and piston rod.

Technical Specifications

Fitment

• 2004-2008 Ford F-150 4WD
• 2006-2008 Lincoln Mark LT 4WD
• Note: Fits models with 4″ of rear lift height only.

What’s Included

• Includes 2 Shocks
• Protective Dust Boots
• Installation Bushings and Washers

Why Choose This Product?

• Engineering Advantage: Rancho’s patented Progressive Engagement Valving is specifically tuned to the vehicle’s weight and geometry to eliminate the “floaty” feel often found in lifted trucks.
• Performance Benefit: Large-bore construction allows for increased fluid capacity, preventing shock fade and maintaining a predictable ride even when towing or hauling.

Related Products

Front Only (Same Series):
Rancho RS5000X 4" Front Lift Shocks for 2004-2008 Ford F-150 4WD

RS90000XL (Front):
Rancho RS90000XL 4" Front Lift Shocks for 2004-2008 Ford F-150 4WD

RS90000XL (Rear):
Rancho RS90000XL 4" Rear Lift Shocks for 2004-2008 Ford F-150 4WD

RS5000X (Kit):
Rancho RS5000X 4" Lift Shocks for 2004-2008 Ford F-150 4WD

RS90000XL (Kit):
Rancho RS90000XL 4" Lift Shocks for 2004-2008 Ford F-150 4WD

Frequently Asked Questions

Will these shocks lift my truck?
No, these shocks do not create lift. They are specifically lengthened to accommodate Ford F-150 models that have already been modified with a 4-inch rear lift kit.

Are these shocks sold as a pair?
Yes, this SKU (2xRS55287) includes two rear shocks to complete the installation for both sides of your vehicle’s rear axle.

What is the benefit of the twin-tube design?
The twin-tube design is highly durable for daily driving; the outer reserve tube protects the inner pressure tube from dents caused by rocks or debris, ensuring the shock continues to function properly even in rugged conditions.