Rancho RS5000X 0″ Lift Shocks for 2004-2007 Buick Rainier

Description
Rancho RS5000X 0″ Lift Shocks for 2004-2007 Buick Rainier

Rancho RS5000X 0″ Lift Shocks for 2004-2007 Buick Rainier

Part Number: RS55817 / RS55386

Summary: The Rancho RS5000X series provides a sophisticated upgrade for the Buick Rainier and Oldsmobile Bravada, utilizing an innovative cross-tuned twin-tube design. By integrating a unique Progressive Engagement Valving system, these shocks reduce initial impacts and minimize body roll during cornering. This set is engineered specifically for stock ride height vehicles, offering a significant improvement in handling and durability over factory equipment while maintaining a smooth street-focused comfort profile.

Features

• Progressive Engagement Valving: Custom-tuned internal discs provide a gradual transition between low and high-speed damping to ensure controlled ride quality under varying road conditions.
• Twin-Tube Gas Pressure Design: High-capacity 2.25-inch shock bodies provide increased fluid capacity to ensure cooler operating temperatures and consistent performance.
• Nitrogen Gas Charging: Pressurized gas charge provides resistance against oil foaming and aeration to ensure immediate damping response.
• Protective Boot: Included heavy-duty red polyvinyl bellows provides a physical barrier for the piston rod to ensure long-term seal integrity against road debris.

Technical Specifications

Fitment

• 2004-2007 Buick Rainier
• 2002-2004 Oldsmobile Bravada
• Note: Designed for vehicles at 0″ of lift (Stock Height) only.

What’s Included

• Includes 4 Shocks (Full Front and Rear Set)
• Protective Dust Boots
• Mounting Hardware (Where Applicable)

Why Choose This Product?

• Engineering Advantage: Rancho’s patented Cross-Tuned technology optimizes the relationship between the piston and the base valve for superior low-speed control.
• Performance Benefit: Improved stability and reduced “float” during highway speeds while retaining a plush feel over potholes and expansion joints.

Related Products

RS5000X (Rear):
Rancho RS5000X 0" Rear Lift Shocks for 2004-2007 Buick Rainier
Rancho RS5000X Rear lift Shocks for 1999-2004 Ford F-450 Super Duty 2WD/4WD
Rancho RS5000X Rear Shock Absorbers for 1992-2003 Dodge Ram 2500 Van 2WD

RS5000X (Front):
Rancho RS5000X 0" Front Lift Shocks for 2004-2007 Buick Rainier
Rancho 2.25" LEVEL IT Torsion Key System w/RS5000 Front Shocks For 2001-2010 Chevy Silverado 3500HD 2WD/4WD
Rancho RS5000X Front Coilovers for 2009-2010 Dodge Ram 1500 4WD
Rancho RS5000X Front Coilovers for 2014-2018 GMC Sierra 1500 2WD
Rancho 2.25" LEVEL IT Torsion Key System w/RS5000 Front Shocks For 2011-2019 GMC Sierra 2500HD 2WD/4WD
Rancho RS5000X Front Shock Absorbers for 1992-2003 Dodge Ram 3500 Van 2WD

Full Kit (Same Series):
Rancho RS5000X Front and Rear Shock Absorbers for 1992-2003 Dodge Ram 3500 Van 2WD

Frequently Asked Questions

Will these shocks lift my vehicle?
No, these shocks are configured for 0-inches of lift and are designed to replace factory-length dampers without changing the vehicle’s ride height.

What makes the RS5000X different from a standard shock?
The RS5000X features Progressive Engagement Valving, which specifically tunes the shock to react differently to small vs. large bumps, providing a more refined ride than generic replacements.

Is the hardware included for installation?
Yes, these shocks include the necessary bushings and OE-style mounting hardware required for a direct bolt-on installation.