RS55777 Rancho Shock Absorber Nitrogen Gas Charged
RS55777 Rancho Shock Absorber Nitrogen Gas Charged
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RS55777 Rancho Shock Absorber Nitrogen Gas Charged
Experience an unparalleled driving experience with the RS55777 Rancho Shock Absorber, engineered for optimal performance both on and off the road. This innovative shock absorber is designed with a unique rebound valving system and advanced compression phase technology, providing superior handling and control.
Key Features & Benefits:
- Progressive Engagement Valving: Engages progressively to maintain control and stability, ensuring a smooth ride under various driving conditions.
- Tuned Compression Control Valve: Features precision-tuned shim stacked valving that harmonizes shock motion with your vehicle for enhanced performance on any terrain.
- Enlarged 2-1/4 Inch Twin Tube Body: Increases fluid capacity for cooler operation and improves vehicle control and performance across varying speeds and terrains.
- Gas Pressurization: Minimizes air-to-oil mixture that can lead to foaming and shock fade, while providing a mild boost in spring rate for better responsiveness.
- 16 Millimeter Nitro-Carburized Rod: Offers increased scuffing resistance and corrosion protection for enhanced durability.
- Full-Displaced 35 Millimeter Bore: Provides superior control of shock motion due to the expanded piston area.
- 1-3/8 Inch Diameter Sintered Iron Piston: Ensures increased structural strength and reliability.
- Rebound Bumper: Significantly reduces wear and tear during on and off-road driving.
- Glass-Filled, Fluon Banded Piston: Enhances smooth piston travel and responsiveness to changing road conditions.
Specifications:
- Type: Nitrogen Gas
- Design: Twin Tube
- Adjustable: No
- Extended Length: 21-7/8 Inch
- Compressed Length: 16.938 Inch
- Rod Diameter: 5/8 Inch
- Upper Mounting Style: SS2
- Lower Mounting Style: SS2
- Valving Type: Application Specific Valving
- Rod Finish: Nitrocarburized
- Rod Material: Steel
- Body Color: White
- Includes Dust Shield: No
- Includes Boot: Yes
- Quantity: Single
Backed by a limited lifetime warranty, the RS55777 Rancho Shock Absorber is designed to deliver long-lasting performance and reliability. Upgrade your vehicle’s suspension today and enjoy enhanced handling, comfort, and control!
Shipping & Returns
Shipping & Returns
📦 Shipping:
Orders are processed within 1–2 business days. Standard delivery takes 3–7 business days, depending on your location.
↩️ Returns:
You may return or exchange products within 60 days of receiving your order. Items must be in original condition with proof of purchase. If your item is defective or damaged due to manufacturing issues, we’ll replace it at no additional cost.

