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Since 1990, 4WD1 has been a proud importer of USA-made Rancho shocks absorbers. In 2015, the company was excited to release a new larger RS5000-X™ shock series that helps deliver precisely controlled performance for raised-height 4WDs popular in Australia and other parts of the world. The new RS5000-X shock series includes “Cross-Tuned Technology” – a unique valve design that allows for increased control and consistent ride profile with a larger shock body.
At lower speeds an eccentric disc in the valve shim stack engages the valving at lower frequencies, helping to control the energy of motion as the cycle of the shock increases or decreases in its action. When hitting potholes or rocks, Rancho’s ‘Progressive Engagement Valving’ allows for early flow of fluid. This reduces harsh initial impact and controls the flow of fluid in a progressive, gradual manner. When driving on ‘corrugations’ or travelling rough fire tracks, the early flow of fluid helps minimize “rough ride” as the piston movement is able to glide through the initial travel motion of the shock with minimal ground impact or force. If needed, the ‘Progressive Engagement Valving’ will further engage to maintain control and stability.
Rancho first launched the original RS5000™ shock series in 1985 – now one of the best-selling, high-performance shock absorbers in the world. The new Rancho RS5000-X shock series has a larger 2.25-inch diameter reserve tube for greater oil capacity and a solid 16mm nitro-carbonized rod for extra strength. The RS5000-X shock is gas pressurized to minimize foaming and shock fade and adds a mild boost of spring rate. The series also features a glass-filled fluon-banded piston that provides smoother piston travel and greater responsiveness when road conditions vary.
FEATURES AND BENEFITS
Progressive Engagement Valving:
The Rancho RS5000X series design includes patented progressive rebound and compression discs. At lower speeds or in the earlier stages of the shock’s travel, an eccentric disc in the valve shim stacks will engage the valving at lower frequencies, helping to control the energy of motion as the cycle of the shock increases or decreases in its action. When hitting a pothole, off-road trail obstacle or similar activity, Rancho’s Progressive Engagement Valving allows for early flow of fluid, helping to reduce harsh initial impacts and to control the flow of fluid in a progressive, gradual manner through the valving. During on- or off-road driving activities like ‘corrugations’ or when travelling a rough fire trail, the early flow of fluid helps to minimize a “rough” ride as the piston movement is able to glide through the initial travel motion of the shock with minimal ground impact or force. If needed, the Progressive Engagement Valving will further engage to maintain control and stability.
Tuned Compression Control Valve:
The Tuned Compression Control Valve is a custom-tuned, clamped disc base valve that regulates fluid transfer during the shock’s compression cycle to help absorb impacts without disc flutter and to help maintain vehicle control in virtually any environment. The precision-tuned shim stacked valving allows the motion of the shock to work in harmony with the vehicle during on- and off-road driving.
Enlarged 2-1/4-inch Twin Tube Body:
The RS5000-X series features a 2-1/4-inch diameter shock body. A larger shock body allows for increased fluid capacity to operate cooler and to increase vehicle control and performance at varying speeds and terrains. The RS5000-X series combines a larger shock body with all-weather fluid, allowing the shock to withstand internal temperatures between -40 and 248 degrees Fahrenheit.
Gas Pressurization of Shock:
Each RS5000-X shock is gas pressurized to 150 PSI.* The twin tube, gas pressurized shock has a variety of advantages including minimizing air-to-oil mixture that can cause foaming and shock fade. Gas pressurization also provides a mild boost of spring rate to the vehicle. [*most models]
16 mm Nitro-Carburized Rod:
Every Rancho RS5000-X shock piston rod is strengthened through a nitro-carburizing process. From increased scuffing resistance to additional protection against corrosion, the process enhances the shock’s overall durability. Nitro-carburizing also is more environmentally friendly than the chroming process.
Full-Displaced 35 mm Bore:
The RS5000-X’s 35 mm bore helps to provide heightened control of shock motion due largely to the expanded piston area. Full-displaced compression valving allows the piston to displace more fluid than traditional rod displaced valving.
1-3/8-inch Diameter Sintered Iron Piston:
The sintering process forms objects from powders using atomic diffusion. The powdered material is heated to just below its melting point, fusing all of the particles together to create the piston. This process brings increased structural conformity to each Rancho RS5000-X piston.
Rebound Bumper:
Each RS5000-X series shock has a high-strength, polyurethane bumper that helps control the rebound motion during harsh driving conditions. The rebound bumper greatly reduces wear and tear during on- and off-road driving. When your shock rebounds from an obstacle at an excessive rate, the polyurethane bumper dampens the piston rod cycle at its peak point of travel.
Black, Natural Rubber Bushes:
The bushings used on the Rancho RS5000-X series shocks provide additional ride harshness absorption and reduce transmitted road noise and suspension vibration to result in a smoother ride and longer life for shocks and related suspension components.
Low-Friction, Self-Lubricating Seal:
The low-friction, self-lubricating seal included in the RS5000-X shock retains gas and oil to help prolong performance and allow for quicker rebound and smoother compression during the shock cycle. This seals provides an extra layer of defense against dirt and debris.
Protective boot or cover:
Each Rancho RS5000-X series shock includes either a red poly-vinyl accordion protection boot, a black poly-carbonate semi-flexible cover, or a steel metal bell cover adding protection to the shock rod and oil seal during on- and off-road driving.
Glass-Filled, Fluon Banded Piston:
The RS5000-X composite piston band provides smoother piston travel and greater responsiveness to changing road conditions. Each glass-filled band offers incredibly smooth operation within the shock absorber cylinder due to Fluon, a slippery glass and plastic material.
Double-Welded Loops:
Rancho engineers place extra emphasis on welded construction at stress areas – like mounting points – of the RS5000-X shock. Each shock includes double-welded loops for added strength and durability.
In 2017, Rancho (est. 1955) celebrates its 62nd birthday!
Visit www.4WD1.com or phone 1300 004 931 for additional details.
4WD1 Pty Ltd
p: 1300 004 931
e: sales@4wd1.com
w: www.4wd1.com
Since 1990, 4WD1 has been a proud importer of USA-made Rancho shocks absorbers. In 2015, the company was excited to release a new larger RS5000-X™ shock series that helps deliver precisely controlled performance for raised-height 4WDs popular in Australia and other parts of the world. The new RS5000-X shock series includes “Cross-Tuned Technology” – a unique valve design that allows for increased control and consistent ride profile with a larger shock body.