Rancho RS55123 Shock Absorber - Front

Rancho RS5000X Front Shock Absorber

The Rancho RS5000X RS55123 is a front suspension shock absorber built for vehicles that need controlled ride response on pavement and added stability off-road. It uses Rancho’s RS5000X valving approach and advanced compression control to improve handling without changing the factory-style mounting layout.

Compatible With Chevrolet Blazer, GMC Jimmy, Chevrolet S10, GMC Sonoma, Oldsmobile Bravada, Isuzu Hombre, Chevrolet S10 Blazer, GMC S15 Jimmy, and GMC S15 front suspension applications across the listed model years.

Key Features

• Part number RS55123 for front suspension service
• RS5000X valving system for more controlled damping response
• Advanced compression functionality for improved ride control
• Loop bushing and sleeve mounts at both ends
• Dust shield included for added protection
• Extended bumper stop included
• Compressed length: 11.89 in; extended length: 18.08 in
• Travel length: 6.19 in
• Reserve tube diameter: 2 in

Product Details

Rancho RS5000X shocks are positioned for drivers who want firmer control over front-end movement on trucks and SUVs such as the Chevrolet S10, GMC Sonoma, and GMC Jimmy. The RS55123 uses the same LS39 loop bushing and sleeve mount at the upper and lower ends, which supports straightforward replacement on the listed front applications. This part cross-references Monroe Shocks & Struts (e.g., 37099, 911099) for the same application.

The RS5000X line focuses on balanced on-road and off-road performance, with valving tuned to manage compression and rebound more effectively than a basic replacement shock. That makes this Rancho RS55123 a practical choice for restoring front suspension control on older GM compact trucks and SUVs, including Chevrolet Blazer and Oldsmobile Bravada applications.

What It Helps Address

• Excessive front-end bounce over bumps
• Loose or unsettled steering feel on rough roads
• Nose dive during braking
• Reduced control from worn front shocks
• Harsh or inconsistent ride response

Installation Notes

Verify front fitment by year, make, model, and ride-height notes before installation. This shock uses loop bushing and sleeve mounts at both ends, so confirm the LS39 mounting style matches the vehicle’s original hardware layout. The listed applications include 0-inch lift front suspension setups, and some Oldsmobile Bravada listings specify front raised height from 0 to 2.0 inches.

For best results, inspect related suspension components such as bushings, control arms, and mounting points before replacing the shock absorber. Proper torque and alignment checks after installation help maintain consistent front suspension performance.

Quality Assurance

Rancho RS5000X shocks are engineered around a dedicated valving system and compression control strategy to support predictable damping in daily driving and light off-road use. The included dust shield and bumper stop features add protection to the shock body during service.

Fits 1995-2005 Chevrolet Blazer, front; 1992-2005 GMC Jimmy, front; 1983-2004 Chevrolet S10, front; 1991-2004 GMC Sonoma, front; 1996-2001 Oldsmobile Bravada, front; 1991-1994 Oldsmobile Bravada, front; 1998-2000 Isuzu Hombre, front; 1983-1994 Chevrolet S10 Blazer, front; 1983-1991 GMC S15 Jimmy, front; 1983-1990 GMC S15, front.

Part number RS55123 is a direct reference for this front shock absorber application.