Rancho RS55388 Shock Absorber - Front

Rancho RS5000X Front Shock Absorber

The Rancho RS5000X RS55388 is a front suspension shock absorber built for 2004-2009 Dodge Durango and 2007-2009 Chrysler Aspen applications. It uses Rancho’s RS5000X valving and compression control to improve on-road stability and off-road response without changing the vehicle’s 0" lift setup.

Key Features

• RS5000X valving system for balanced handling and control
• Advanced compression functionality for more consistent damping response
• Front suspension shock absorber for stock-height applications
• Extended length: 15.75 in; compressed length: 10.85 in
• Travel length: 4.9 in
• Dust shield included
• Extended bumper stop included
• Loop bushing and sleeve mounts at both ends
• Upper mount: LS29; lower mount: LS23

Product Details

Rancho RS5000X shocks are part of the RS5000X line, which focuses on controlled damping for daily driving and trail use. This RS55388 front shock absorber uses a 2.251 in reserve tube diameter and a loop bushing and sleeve design with 12 mm sleeve IDs for fitment-specific installation. It is listed for the front position on 2004-2009 Dodge Durango and 2007-2009 Chrysler Aspen models with 0" lift. This part cross-references Monroe Shocks & Struts (e.g., 911259) for the same application.

Common Problems It Can Address

• Excessive front-end bounce over bumps
• Reduced steering stability on rough pavement
• Weak damping from worn factory shocks
• Harsh ride response after suspension wear
• Front suspension control loss during load transfer

Installation Notes

Verify front-position fitment before installation on your Dodge Durango or Chrysler Aspen. This RS55388 uses loop bushing and sleeve mounts, so confirm sleeve ID and mount dimensions against the vehicle’s original shock. It is specified for vehicles with 0" lift, and the included dust shield and extended bumper stop should be checked during replacement to ensure proper suspension travel and clearance.

Quality Assurance

Rancho RS5000X shocks are engineered around a dedicated valving strategy and compression tuning to support consistent handling characteristics in street and light off-road use. The RS55388 is built as a direct-fit suspension shock absorber for the listed front applications.