Rancho RS90000XL 4″ Lift Shocks for 2004-2008 Infiniti QX56

Description
Rancho RS90000XL 4″ Lift Shocks for 2004-2008 Infiniti QX56

Rancho RS9000XL 4″ Lift Shocks for 2004-2008 Infiniti QX56

Part Number: RS999773

Summary: The Rancho RS9000XL series provides industry-leading adjustability for drivers who demand total control over their vehicle’s ride profile. Featuring a 9-position manual tuning knob, these shocks allow you to transition from a soft street ride to a firm setting optimized for towing or aggressive off-road use. Specifically configured for the Infiniti QX56 and Nissan Titan with a 4-inch lift, this set delivers professional-grade damping for oversized wheel and tire combinations.

Features

• 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping force to ensure the perfect ride for any terrain or load requirement.
• Large Shock Body: The 2.75-inch diameter reserve tube provides increased oil capacity to ensure consistent performance and reduced fade under high-heat conditions.
• Nitro-Carburized Rod: A heavy-duty piston rod coating provides superior scuff and corrosion resistance to ensure long-term seal integrity in harsh environments.
• Polyurethane Bushings: High-performance polyurethane material provides improved responsiveness and durability to ensure a quiet, controlled suspension cycle.

Technical Specifications

Fitment

• 2004-2008 Infiniti QX56
• 2004-2008 Nissan Titan
• Note: Compatible with Rancho® RS6594B System ONLY. Excluding All Wheel Drive models.

What’s Included

• Includes 4 Shocks
• Protective Red Shock Boots
• Required Installation Hardware

Why Choose This Product?

• Engineering Advantage: Rancho’s MyRide technology allows for a 400% change in damping force between setting 1 and 9, offering the most versatile tuning range in the aftermarket.
• Performance Benefit: Eliminates the “one size fits all” compromise, allowing the driver to stiffen the rear for heavy trailers or soften the front for daily commuting.

Related Products

RS5000X (Front):
Rancho RS5000X 4" Front Lift Shocks for 2004-2008 Infiniti QX56

RS90000XL (Rear):
Rancho RS90000XL 4" Rear Lift Shocks for 2004-2008 Infiniti QX56

RS90000XL (Front):
Rancho RS90000XL 4" Front Lift Shocks for 2004-2008 Infiniti QX56

Frequently Asked Questions

How do I adjust the firmness of these shocks?
The RS9000XL features a manual knob located at the base of the shock body. Simply turn the dial to your desired setting (1 for softest, 9 for firmest).

Will these shocks lift my Infiniti QX56?
No, these shocks do not create lift. They are specifically valved and extended to accommodate vehicles already equipped with a 4-inch suspension lift system.

Can these be used on AWD models?
No, these specific part numbers are designed for 2WD/4WD models and are excluded from use on All Wheel Drive (AWD) variants.