Rancho RS999221 Shock Absorber - Front

Overview of Rancho RS9000XL Suspension Shock Absorber

The Rancho RS9000XL Suspension Shock Absorber (Part Number RS999221) is engineered for Dodge Ram 1500, 2500, and 3500 models. Designed to provide reliable damping performance, this shock absorber features a travel length of 8.5 inches and includes a dust shield for enhanced durability.

• Travel Length: 8.5 inches
• Compressed Length: 15.3 inches
• Extended Length: 23.8 inches
• Dust Shield Included for protection
• Lower Mounting: Loop bushing & sleeve mount (14mm sleeve ID x 1.11/16" sleeve OA)
• Upper Mounting: Stem mount (2.5/8" stem length x 1/2"-13 thread pitch)
• Reserve Tube Diameter: 2.38 inches
• Parts Pack Included (P01356)

Details on the RS9000XL Product Line

The RS9000XL line from Rancho is designed to offer adjustable damping for a range of driving conditions. This shock absorber model, RS999221, is part of that line and provides a balance of comfort and control tailored for heavy-duty trucks like the Dodge Ram 1500, 2500, and 3500. The adjustable settings allow drivers to fine-tune suspension performance based on load and terrain.

Technical Description and Features

The RS999221 shock absorber features an 8.5-inch travel length, allowing for effective suspension articulation. Its compressed length measures 15.3 inches, while the extended length is 23.8 inches, making it suitable for the specified Dodge Ram models. The shock includes a dust shield to protect internal components from debris and extend service life. The lower mounting uses a loop bushing and sleeve mount with a 14mm sleeve inner diameter and 1.11/16" outer sleeve, ensuring secure attachment. The upper mounting is a stem mount with a 2.5/8" stem length and 1/2"-13 thread pitch, compatible with factory mounting points. The reserve tube diameter of 2.38 inches supports consistent hydraulic performance. This shock absorber does not include compressed or extended bumper stops or hydraulic lockout features.

Applications and Problem Solving

• Improves ride quality on Dodge Ram 1500, 2500, and 3500 trucks
• Reduces suspension bounce and harshness over rough terrain
• Enhances vehicle control during towing or heavy payload conditions
• Minimizes wear on suspension components by providing consistent damping
• Addresses issues with factory shocks that lack adjustability or durability

Installation Notes and Tips

Installation of the RS999221 shock absorber requires matching the upper stem mount and lower loop bushing mount to the vehicle’s factory suspension points. Ensure the dust shield is properly positioned to protect the shock shaft. Use the included parts pack (P01356) for mounting hardware. Verify compressed and extended lengths to confirm fitment before installation. Professional installation is recommended for optimal performance and safety.

Quality Assurance and Warranty

Rancho RS9000XL shocks are manufactured to meet OEM standards for durability and performance. The RS999221 shock absorber includes a dust shield to enhance longevity. Warranty details should be confirmed with the manufacturer or authorized distributor, as coverage may vary by region and application.