Rancho RS994129 RS9000XL 9-Position Adjustable Shock Absorber

The Rancho RS994129 RS9000XL is a premium, nine-position manually adjustable shock absorber engineered for trucks, SUVs, and Jeeps used in on-road, off-road, towing, and hauling applications. Recognized as the first nine-position manually adjustable ride control series in the off-road market, the RS9000XL gives drivers complete control over damping firmness with a simple twist of the adjustment knob.

The oversized 2.75-inch tri-tube body increases fluid capacity for cooler, more consistent operation under demanding conditions. Nitrogen gas pressurization minimizes air-to-oil mixture to reduce damping fade and foaming. A heavy-duty 18mm nitro-carburized piston rod and graphite-filled Fluon-banded piston deliver smooth, responsive performance across all nine adjustment settings.

Key Features:

• Nine-position adjustment: Easy-to-use knob provides up to 400% change in damping control from position 1 (soft/OE-like) to position 9 (firm/towing-ready)
• 2.75" tri-tube shock body: Larger fluid capacity for cooler, more consistent performance
• Nitrogen gas charged: Pressurized to minimize air-to-oil foaming and reduce performance fade
• 18mm nitro-carburized piston rod: Heavy-duty construction for long-term durability
• Graphite-filled Fluon-banded piston: Reduces friction and enhances responsiveness
• Polyurethane rebound bumper and bushings: Absorb ride harshness and extend service life
• Low-friction, self-lubricating oil seal: Retains gas and oil for quicker rebound and smoother compression
• Polyvinyl protective boot: Shields the shock rod and oil seal from debris and contamination
• Dual-component 2K liquid metallic paint finish: Superior chip resistance and a bold appearance
• Integrated bottom mounts: Enhanced structural strength over previous generations
• Backed by Rancho's Limited Lifetime Warranty

Ideal for stock or lifted trucks, SUVs, and Jeeps that tow, haul, or tackle off-road terrain. Simply install rod-up, body-down, and dial in your preferred ride: settings 1–3 mimic OE ride quality, 4–6 offer a slightly firmer feel, and 7–9 are optimized for towing and heavy loads.