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Rancho RS55397 Suspension Shock Absorber - Rear
| Brand | Rancho RS55397 |
|---|---|
| Position | Rear |
| 65126 | S5 |
| 65127 | Ls68 |
| Dust Shield Material | Rubber |
| Compressed Bumper Stop | No |
| Compressed Length | 14.04 |
| Dust Shield Included | Yes |
| Extended Bumper Stop | Yes |
| Extended Hydraulic Lockout | No |
| Extended Length | 22.11 |
| Lower Mounting Description | Loop bushing & sleeve mount - 3/4" sleeve id x 1.7/8" sleeve oal |
| Parts Pack | P01167 |
| Reserve Tube Diameter | 2.252 |
| Travel Length | 8.07 |
| Upper Mounting Description | Stem mount - 2.5/8" stem length x 1/2"-13 thread pitch |
| Product line | RS5000X |
| Fits | Toyota · 30 vehicles |
RS5000X tuning. Application-specific valving and compression control for steadier suspension response.
Protected design. Includes a rubber dust shield to help shield the shock body from debris.
Fitment-specific mounts. Stem upper mount and loop bushing lower mount match the listed application.
Cross-references Focus Auto Parts 341532, Four Seasons 37270 and KYB 344410 for the same application. See all 34.
Overview
Rancho RS5000X shock absorber RS55397 is built for rear suspension applications that need controlled damping and consistent response on paved roads and rough terrain. It uses Rancho’s RS5000X valving approach with advanced compression control to improve handling and ride stability.
Compatible with Toyota 4Runner and Toyota FJ Cruiser rear applications listed below, this shock is a fitment-specific replacement for vehicles with the required suspension notes. Part number RS55397 is also referenced by interchange listings for related applications.
Key Features
- RS5000X valving for improved on- and off-road handling.
- Advanced compression control for more consistent suspension response.
- Dust shield included to help protect the shock body.
- Rubber dust shield material for added protection in service.
- Stem upper mount and loop bushing lower mount for application-specific installation.
- Extended bumper stop included; compressed bumper stop not included.
Detailed Description
The Rancho RS5000X line is engineered as a performance-oriented shock absorber family for drivers who want firmer control without moving away from a direct replacement format. RS55397 uses a stem upper mount and a loop bushing and sleeve lower mount, along with an 8.07-inch travel length, 22.11-inch extended length, and 14.04-inch compressed length. The reserve tube diameter measures 2.252 inches, and the shock includes a dust shield for added protection.
This part fits 2021-2024 Toyota 4Runner, rear; 2010-2020 Toyota 4Runner, rear; 2007-2014 Toyota FJ Cruiser, rear; and 2003-2009 Toyota 4Runner, rear, with the listed suspension notes. For Toyota 4Runner and Toyota FJ Cruiser owners replacing a rear shock absorber, RS55397 provides a fitment-specific option built around Rancho RS5000X tuning.
This part cross-references KYB (e.g., 344410, 349185) for the same application.
What It Helps Address
- Excessive rear suspension bounce after bumps or dips.
- Loose or unsettled ride feel on uneven pavement.
- Reduced control during off-road or mixed-surface driving.
- Worn shock performance that affects handling and stability.
- Need for a rear shock matched to specific Toyota 4Runner and Toyota FJ Cruiser fitment notes.
Installation Notes
Verify the vehicle’s rear suspension configuration before ordering. This shock is listed for 4Runner applications without Delphi REAS or Kinetic Dynamic Suspension in the specified years, and for FJ Cruiser applications with rear raised height from 0 to 1.5 inches. Confirm mount style and length specifications against the original part before installation.
Quality Assurance
Rancho RS5000X shocks are part of a performance-focused product line known for application-specific valving and suspension control. RS55397 follows that RS5000X design approach for rear shock replacement in the listed Toyota applications.
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2024 | Toyota | 4Runner | SR5 | Rear | RS5000X |
| 2023 | Toyota | 4Runner | 40th Anniversary Edition | Rear | RS5000X |
| 2022 | Toyota | 4Runner | SR5 | Rear | RS5000X |
| 2021 | Toyota | 4Runner | Base | Rear | RS5000X |
| 2020 | Toyota | 4Runner | — | Rear | without Delphi REAS, Kinetic Dynamic Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2019 | Toyota | 4Runner | — | Rear | without Delphi REAS, Kinetic Dynamic Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2018 | Toyota | 4Runner | — | Rear | without Delphi REAS, Kinetic Dynamic Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2017 | Toyota | 4Runner | — | Rear | without Delphi REAS, Kinetic Dynamic Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2016 | Toyota | 4Runner | — | Rear | without Delphi REAS, Kinetic Dynamic Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2015 | Toyota | 4Runner | — | Rear | without Delphi REAS, Kinetic Dynamic Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2014 | Toyota | 4Runner | — | Rear | without Delphi REAS, Kinetic Dynamic Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2014 | Toyota | FJ Cruiser | — | Rear | with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2013 | Toyota | 4Runner | — | Rear | without Delphi REAS, Kinetic Dynamic Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2013 | Toyota | FJ Cruiser | — | Rear | with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2012 | Toyota | 4Runner | — | Rear | without Delphi REAS, Kinetic Dynamic Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2012 | Toyota | FJ Cruiser | — | Rear | with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2011 | Toyota | 4Runner | — | Rear | without Delphi REAS, Kinetic Dynamic Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2011 | Toyota | FJ Cruiser | — | Rear | with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2010 | Toyota | 4Runner | — | Rear | without Delphi REAS, Kinetic Dynamic Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2010 | Toyota | FJ Cruiser | — | Rear | with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2009 | Toyota | 4Runner | — | Rear | without Delphi REAS Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2009 | Toyota | FJ Cruiser | — | Rear | with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2008 | Toyota | 4Runner | — | Rear | without Delphi REAS Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2008 | Toyota | FJ Cruiser | — | Rear | with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2007 | Toyota | 4Runner | — | Rear | without Delphi REAS Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2007 | Toyota | FJ Cruiser | — | Rear | with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2006 | Toyota | 4Runner | — | Rear | without Delphi REAS Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2005 | Toyota | 4Runner | — | Rear | without Delphi REAS Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2004 | Toyota | 4Runner | — | Rear | without Delphi REAS Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
| 2003 | Toyota | 4Runner | — | Rear | without Delphi REAS Suspension; with Rear Raised Height 0 (in) to 1.5 (in); RS5000X |
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