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Rancho RS55185 Shock Absorber - Rear
| Brand | Rancho RS55185 |
|---|---|
| Position | Rear |
| XP7 | |
| Compressed Bumper Stop | No |
| Compressed Length | 15.51 |
| Dust Shield Included | Yes |
| Extended Bumper Stop | Yes |
| Extended Hydraulic Lockout | No |
| Extended Length | 25.42 |
| Lower Mounting Code | LS26 |
| Lower Mounting Description | Loop Bushing & Sleeve Mount - 12MM Sleeve ID X 1.1/2" Sleeve OAL |
| Parts Pack | P0941 |
| Reserve Tube Diameter | 2.251 |
| Travel Length | 9.91 |
| Upper Mounting Description | Cross Pin Mount - Closed Ended, 5/16" Hole ID (Both Ends) X 2.7/8" Pin Length (Hole Center to Center) |
| Product line | RS5000X |
| Fits | Ford, Mercury, and Mazda · 28 vehicles |
Exclusive valving system. Advanced compression improves handling and performance on and off road.
Dust shield included. Helps protect the shock absorber from dirt and debris.
Suspension shock absorber for controlled ride and response.
Cross-references Focus Auto Parts 342506, KYB 344269 and KYB 565003 for the same application. See all 11.
Rancho RS5000X Rear Shock for Explorer and Mountaineer
The Rancho RS5000X RS55185 is a rear suspension shock absorber built for select Ford, Mercury, and Mazda applications, including Ford Explorer, Explorer Sport Trac, Explorer Sport, and Mercury Mountaineer models. It uses Rancho’s RS5000X valving approach and advanced compression control to improve on-road stability and off-road control.
Key Features
- Rancho RS5000X shock absorber for rear suspension applications
- Exclusive valving system for more controlled handling response
- Advanced compression functionality for improved ride control
- Dust shield included for added protection
- Extended bumper stop included
- Loop bushing and sleeve lower mount with 12 mm sleeve ID
- Cross pin upper mount with closed-ended 5/16 in. hole ID
- Compressed length: 15.51 in.; extended length: 25.42 in.; travel length: 9.91 in.
- Reserve tube diameter: 2.251 in.
Product Details
Rancho RS5000X RS55185 is engineered as a rear shock absorber for vehicles that need consistent damping control across changing road conditions. The RS5000X line focuses on refined valving and compression behavior, which helps maintain predictable suspension response on pavement, gravel, and light off-road terrain. This part cross-references Monroe Shocks & Struts (e.g., 37035) for the same application.
Compatible With 2001-2005 Ford Explorer Sport Trac, rear; 2002-2003 Ford Explorer, rear; 2001-2003 Ford Explorer Sport, rear; 1995-2001 Ford Explorer, rear without Automatic Ride Control and with Rear Raised Height 0 in.; 1997-2001 Mercury Mountaineer, rear; 1994 Ford Explorer, rear to 11/1994 with Rear Raised Height 0 in. to 1.5 in.; 1991-1994 Mazda Navajo, rear with Rear Raised Height 0 in. to 2.5 in.; and 1991-1993 Ford Explorer, rear with Rear Raised Height 0 in. to 1.5 in.
Common Issues This Shock Can Address
- Excessive rear-end bounce over bumps and dips
- Loose or unsettled handling in Ford Explorer and Mercury Mountaineer rear suspension setups
- Reduced control after shock wear from age or mileage
- Uneven rear suspension response on mixed road surfaces
- Loss of damping performance on vehicles with raised rear height within the listed fitment
Installation Notes and Tips
Verify rear fitment by year, model, and suspension configuration before installation. This RS55185 shock uses a loop bushing and sleeve lower mount and a cross pin upper mount, so confirm mount style and sleeve dimensions against the vehicle before ordering. Check the existing shock length and suspension travel to ensure the compressed and extended dimensions match the application.
Quality Assurance
Rancho RS5000X shocks are built around a dedicated valving design and compression-focused damping control for consistent suspension performance. The RS55185 is part of the Rancho RS5000X line and is specified for direct rear applications on the listed Ford Explorer, Explorer Sport Trac, Explorer Sport, Mercury Mountaineer, and Mazda Navajo vehicles.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2005 | Ford | Explorer Sport Trac | Rear | Rear Shock Absorber for 0 inch raised height.; RS5000X |
| 2004 | Ford | Explorer Sport Trac | Rear | Rear Shock Absorber for 0 inch raised height.; RS5000X |
| 2003 | Ford | Explorer Sport | Rear | Rear Shock Absorber for 0 inch raised height.; RS5000X |
| 2003 | Ford | Explorer Sport Trac | Rear | Rear Shock Absorber for 0 inch raised height.; RS5000X |
| 2002 | Ford | Explorer Sport | Rear | Rear Shock Absorber for 0 inch raised height.; RS5000X |
| 2002 | Ford | Explorer Sport Trac | Rear | Rear Shock Absorber for 0 inch raised height.; RS5000X |
| 2001 | Ford | Explorer | Rear | without Automatic Ride Control; with Rear Raised Height 0 (in); RS5000X |
| 2001 | Ford | Explorer Sport | Rear | Rear Shock Absorber for 0 inch raised height.; RS5000X |
| 2001 | Ford | Explorer Sport Trac | Rear | Rear Shock Absorber for 0 inch raised height.; RS5000X |
| 2001 | Mercury | Mountaineer | Rear | Rear Shock Absorber for 0 inch raised height.; RS5000X |
| 2000 | Ford | Explorer | Rear | without Automatic Ride Control; with Rear Raised Height 0 (in); RS5000X |
| 2000 | Mercury | Mountaineer | Rear | Rear Shock Absorber for 0 inch raised height.; RS5000X |
| 1999 | Ford | Explorer | Rear | without Automatic Ride Control; with Rear Raised Height 0 (in); RS5000X |
| 1999 | Mercury | Mountaineer | Rear | Rear Shock Absorber for 0 inch raised height.; RS5000X |
| 1998 | Ford | Explorer | Rear | without Automatic Ride Control; with Rear Raised Height 0 (in); RS5000X |
| 1998 | Mercury | Mountaineer | Rear | Rear Shock Absorber for 0 inch raised height.; RS5000X |
| 1997 | Ford | Explorer | Rear | without Automatic Ride Control; with Rear Raised Height 0 (in); RS5000X |
| 1997 | Mercury | Mountaineer | Rear | Rear Shock Absorber for 0 inch raised height.; RS5000X |
| 1996 | Ford | Explorer | Rear | without Automatic Ride Control; with Rear Raised Height 0 (in); RS5000X |
| 1995 | Ford | Explorer | Rear | without Automatic Ride Control; with Rear Raised Height 0 (in); RS5000X |
| 1994 | Ford | Explorer | Rear | To 11/1994; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 1994 | Mazda | Navajo | Rear | with Rear Raised Height 0 (in) to 2.5 (in); RS5000X |
| 1993 | Ford | Explorer | Rear | with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 1993 | Mazda | Navajo | Rear | with Rear Raised Height 0 (in) to 2.5 (in); RS5000X |
| 1992 | Ford | Explorer | Rear | with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 1992 | Mazda | Navajo | Rear | with Rear Raised Height 0 (in) to 2.5 (in); RS5000X |
| 1991 | Ford | Explorer | Rear | with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 1991 | Mazda | Navajo | Rear | with Rear Raised Height 0 (in) to 2.5 (in); RS5000X |
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