Rancho RS5000X 0″ Lift Shocks for 2003-2008 Isuzu Ascender Coil Springs

Rancho RS5000X 0″ Lift Shocks for 2003-2008 Isuzu Ascender Coil Springs

Part Number: RS55817

Summary: The Rancho RS5000X series provides a significant upgrade in ride quality and durability for your Isuzu Ascender. Utilizing a sophisticated twin-tube design with a larger 2.25-inch body, these shocks increase fluid capacity to maintain cooler operating temperatures during extended use. This kit is specifically valved to eliminate the harshness often found in factory replacements, delivering a smooth, controlled street performance for stock-height vehicles.

Features

• Progressive Engagement Valving: Custom-tuned compression and rebound circuits provide a smoother transition between damping cycles to ensure maximum comfort on uneven pavement.
• Gas Pressurized Twin-Tube: Nitrogen gas charging reduces aeration and foaming provides consistent damping force to ensure predictable handling under load.
• 2.25-inch Shock Body: An increased outer diameter provides higher oil capacity to ensure lower internal temperatures and reduced fade during heavy-duty use.
• Nitro-Carburized Piston Rod: A specialized surface treatment provides superior corrosion resistance to ensure long-term seal integrity in harsh environments.

Technical Specifications

Fitment

• 2003-2008 Isuzu Ascender (Coil Spring Models)
• 2002-2004 Oldsmobile Bravada
• Note: Fits models with rear coil spring suspension only. Configured for vehicles at 0-inches of lift.

What’s Included

• Includes 4 Shocks (Full Front and Rear Set)
• Protective Red Dust Boots
• Required Installation Bushings and Hardware

Why Choose This Product?

• Engineering Advantage: Rancho’s patented Progressive Engagement Valving is specifically tuned to the weight and geometry of the GMT360/370 platform, outperforming “one-size-fits-all” shocks.
• Performance Benefit: Drivers will experience a reduction in body roll and “floaty” suspension feel, resulting in a more planted and confident driving experience.

Related Products

RS5000X (Rear):
Rancho RS5000X 0" Rear Lift Shocks for 2003-2008 Isuzu Ascender Coil Springs

RS5000X (Front):
Rancho RS5000X 0" Front Lift Shocks for 2003-2008 Isuzu Ascender Coil Springs

Frequently Asked Questions

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

Is this a full set for the front and rear?
Yes, this SKU includes a full set of 4 shocks to refresh the entire suspension system of your vehicle.

What is the benefit of the RS5000X over a standard shock?
The RS5000X features a much larger 2.25-inch body and cross-tuned valving, which provides better heat dissipation and a more refined ride than standard 2-inch replacement shocks.