Rancho RS9000XL Adjustable Rear Shock Absorber for 1999-2016 Ford F-250/F-350 Super Duty (RS994254)

Fits 1999-2016 Ford F-250 and F-350 Super Duty trucks.

The Rancho RS9000XL series delivers professional-grade damping control for heavy-duty Ford pickups. Featuring a nine-position manual adjustment knob, this shock allows drivers to tune the damping and firmness to suit specific tasks—from daily highway driving to maximum stability for heavy towing or off-road exploration. This versatility eliminates the common compromise between empty-bed comfort and loaded stability.

Built to withstand extreme temperature fluctuations, the RS9000XL utilizes a large 2.38-inch tri-tube body and all-weather fluid that remains stable from -40 to 248°F. The internal nitrogen gas charge (45-60 PSI) prevents oil foaming and damping fade under heavy use. For long-term durability in harsh environments, each shock is finished with a dual-component 2K liquid metallic paint for chip resistance and includes a polyvinyl boot to protect the piston rod.

• 9-Position Adjustment: Quickly tune damping via the external knob for on-road comfort or off-road control.
• Large Body Diameter: Up to 2.38-in. (60mm) tri-tube body provides increased fluid capacity for cooler operation.
• Extreme Temperature Fluid: Engineered to maintain consistent performance in climates ranging from -40 to 248°F.
• Reduced Fade: Nitrogen gas pressurized to 45-60 PSI to minimize aeration and foaming.
• Premium Finish: Dual-component 2K liquid metallic finish provides superior resistance to road salt and debris.
• Serviceable Design: Includes polyurethane bushings and a protective boot.
• Manufacturer Part Number: RS994254