Fits 1990-2002 Toyota 4Runner (Base, SR5, and Limited).

The Rancho RS5000X (MPN: RS55187) is a twin-tube gas-pressurized shock absorber engineered to improve handling and ride quality on both street and trail. Utilizing Rancho's exclusive Progressive Engagement Valving (PEV), this shock is custom-tuned to reduce initial impacts at low speeds while minimizing rough ride characteristics. The Cross Tuned technology incorporates a unique rebound valving system and advanced compression phase to improve overall stability and performance.

• Durable Construction: Built with a 16mm nitro-carburized piston rod to resist scuffs and corrosion, paired with double-welded loops at critical stress areas.
• Thermal Stability: The large twin-tube body is filled with all-weather fluid, allowing for consistent operation in internal temperatures ranging from -40 to 248°F.
• Nitrogen Gas Charged: Pressurized to 150 PSI to minimize air-to-oil mixture, effectively reducing damping performance fade and foaming during heavy use.
• Smooth Operation: Features a fluon-banded 35mm sintered iron piston and a polyurethane rebound bumper to help absorb ride harshness and enhance responsiveness.
• Included Hardware: Comes complete with rubber bushings and a polyvinyl protective boot to shield the piston rod from debris.

Fits select 1991-2005 Ford Explorer (including Sport and Sport Trac), Mazda Navajo, and Mercury Mountaineer. The Rancho RS5000X Rear Shock Absorber (RS55185) is engineered to deliver improved handling and control for SUVs and light trucks, both on and off-road.

At the core of the RS5000X is Rancho's Cross Tuned technology, featuring a unique valving system that manages both rebound and compression phases. This is further enhanced by Progressive Engagement Valving (PEV), which reduces initial impact at low speeds to minimize ride harshness. To prevent damping fade and oil foaming during heavy use, the twin-tube body is nitrogen-gas pressurized to 150 PSI.

• Strong Construction: Features a 16mm nitro-carburized piston rod for superior corrosion resistance and double-welded loops at critical stress points.
• Advanced Internals: Equipped with a 35mm sintered iron piston and a self-lubricating, low-friction seal to maintain gas and oil retention.
• Temperature Resilience: Filled with all-weather fluid capable of withstanding internal operating temperatures from -40 to 248°F.
• Ride Quality: Includes polyurethane rebound bumpers and rubber bushings to absorb road vibrations, protected by a polyvinyl boot.
• Specifications: Gas pressurized to 150 PSI; 35mm piston; 16mm rod; Manufacturer Part Number: RS55185.

Fits 1986-2004 Toyota 4Runner, Pickup, and Tacoma. This Rancho RS5000X rear shock absorber (RS55180) features Cross Tuned technology with a unique Progressive Engagement Valving system. This design helps reduce initial impact at low speeds while maintaining control during aggressive off-road driving or heavy hauling. The twin-tube body is gas-pressurized to 150 PSI to minimize aeration and shock fade, ensuring consistent damping performance in extreme conditions.

• Heavy-Duty Construction: Features a 16mm nitro-carburized piston rod for scuff and corrosion resistance, plus a 35mm sintered iron piston for structural integrity.
• Thermal Stability: Large twin-tube body filled with all-weather fluid handles internal temperatures ranging from -40 to 248°F.
• Ride Refinement: Includes a polyurethane rebound bumper and rubber bushings to absorb road harshness and vibration.
• Durability: Engineered with double-welded loops at high-stress points and a polyvinyl protective boot to shield the rod and seal.
• Specifications: Manufacturer Part Number RS55180; Nitrogen gas pressurized to 150 PSI; 35mm piston diameter; 16mm rod diameter.

Fits select 1977-1996 Ford Bronco, F-150, F-250, and Isuzu Trooper.

The Rancho RS5000X series leverages Cross Tuned technology to bridge the gap between off-road control and on-road comfort. This twin-tube shock absorber features an exclusive Progressive Engagement Valving (PEV) system, specifically tuned for each vehicle to reduce initial impact harshness at low speeds while maintaining high-speed control. Designed for durability in extreme environments, the RS55179 handles internal temperatures ranging from -40 to 248°F, ensuring consistent damping performance whether you are navigating a job site or a trail.

• Robust Construction: Features a 16mm nitro-carburized piston rod for superior corrosion resistance and double-welded loops at high-stress mounting points.
• Advanced Internals: Equipped with a 35mm sintered iron piston and a fluon-banded seal to enhance responsiveness to changing road conditions.
• Gas Pressurized: Charged with nitrogen gas to 150 PSI to minimize aeration and foaming, significantly reducing shock fade during heavy cycling.
• Temperature Resilient: Large twin-tube body and all-weather fluid allow for cooler operation and reliable performance in extreme climates.
• Ride Quality: Polyurethane rebound bumpers and rubber bushings absorb vibrations, while a polyvinyl protective boot shields the rod from debris.
• Part Number: RS55179

Fits select 1987-1995 Jeep Wrangler models including Base, Sahara, Laredo, and SE.

The Rancho RS5000X Front Shock Absorber (RS55168) provides a significant upgrade for off-road control and street performance. Utilizing Cross Tuned technology, this shock features a unique rebound valving system and an advanced compression phase that improves handling and minimizes ride harshness. Its Progressive Engagement Valving is custom-tuned to reduce initial impacts at low speeds, while the twin-tube body is filled with all-weather fluid to maintain performance in temperatures ranging from -40 to 248°F.

• 16mm nitro-carburized piston rod for superior scuff and corrosion resistance
• 35mm sintered iron piston provides enhanced structural integrity across the expanded piston area
• Nitrogen gas pressurized to 150 PSI to minimize air-to-oil mixture and reduce damping fade
• Double-welded loops at stress areas for long-term off-road durability
• Polyurethane rebound bumper and rubber bushings to absorb ride harshness
• Fluon-banded piston for consistent responsiveness to changing road conditions
• Includes a polyvinyl protective boot to shield the rod and self-lubricating seal
• Manufacturer Part Number: RS55168

Fits select 1988-2000 Chevrolet and GMC C1500, C2500, C3500, Suburban, Tahoe, and Yukon models (RWD).

The Rancho RS5000X RS55166 shock absorber utilizes advanced Progressive Engagement Valving (PEV) to deliver a refined ride on-road while maintaining firm control during off-road use. This twin-tube gas-pressurized shock is specifically tuned for each application to minimize air-to-oil foaming and damping fade. The design features a large body for increased fluid capacity, ensuring cooler operation and consistent performance across extreme temperature ranges from -40 to 248°F.

• Durable Construction: Features a 16mm nitro-carburized piston rod to resist scuffing and corrosion, paired with double-welded loops at high-stress points.
• Advanced Valving: Cross Tuned technology with Progressive Engagement Valving reduces initial impact harshness at low speeds and improves handling during high-speed maneuvers.
• Structural Integrity: Includes a 35mm sintered iron piston and a fluon-banded seal for a secure, low-friction pressure seal.
• Complete Protection: Includes a polyvinyl protective boot to shield the rod and oil seal from debris and road grime.

• MPN: RS55166
• Shock Series: RS5000X
• Type: Twin-Tube Gas Pressurized (150 PSI)
• Piston Diameter: 35mm
• Piston Rod Diameter: 16mm
• Bushing Material: Natural Rubber
• Bumper Material: Polyurethane

Fits select 1985-1997 Ford F-250 and F-350 (including HD models).

The Rancho RS5000X series shock absorber utilizes advanced Cross Tuned technology to provide a high level of control and comfort for your Ford truck. Engineered with a unique rebound valving system and a sophisticated compression phase, this twin-tube shock handles both highway miles and off-road terrain with equal precision. The internal Progressive Engagement Valving is custom-tuned for these specific Ford applications to minimize initial impacts at low speeds while maintaining firm control during aggressive maneuvers.

• Robust Construction: Features a 16mm nitro-carburized piston rod for superior scuff and corrosion resistance, paired with a 35mm sintered iron piston for structural integrity.
• Temperature Resistance: Filled with all-weather fluid capable of withstanding internal temperatures from -40°F to 248°F for consistent performance in any climate.
• Reduced Fade: Pressurized with nitrogen gas to 150 PSI to minimize air-to-oil foaming and maintain damping performance under heavy use.
• Enhanced Sealing: Low-friction, self-lubricating seals retain gas and oil for quicker rebound and smoother compression cycles.
• Refined Ride: Polyurethane rebound bumpers and rubber bushings help isolate road harshness and vibration.
• Part Number: RS55165

Fits select 1988-2000 Chevrolet and GMC K1500, K2500, Suburban, Tahoe, Yukon, and Blazer models. This Rancho RS5000X gas-pressurized shock absorber is engineered to provide a significant upgrade over factory damping, whether you are navigating highway commutes or off-road trails.

Built around a large twin-tube body, the RS5000X features Rancho's exclusive Progressive Engagement Valving. This system is custom-tuned to each vehicle application to reduce initial impacts at low speeds while maintaining firm control during aggressive maneuvers. The nitrogen gas charge, pressurized to 150 PSI, minimizes air-to-oil foaming to prevent damping fade under heavy use. For long-term durability, the unit utilizes a 16mm nitro-carburized piston rod to resist corrosion and double-welded loops at critical stress points.

• Manufacturer Part Number: RS55152
• Piston Rod: 16mm nitro-carburized steel for superior scuff resistance
• Piston: 35mm sintered iron for enhanced structural integrity
• Gas Charge: 150 PSI nitrogen gas pressurized to reduce fade
• Operating Range: Withstands internal temperatures from -40 to 248°F
• Valving: Cross Tuned technology with exclusive Progressive Engagement Valving
• Components: Includes polyurethane rebound bumper, rubber bushings, and a polyvinyl protective boot
• Finish: White with red dust boot
• Warranty: Rancho Limited Lifetime Warranty

Fits select 1968-1991 Chevrolet and GMC Blazer, Jimmy, Suburban, and K/V-Series 4WD trucks.

The Rancho RS5000X series shock absorber utilizes exclusive Cross Tuned technology to provide a custom-tuned ride for your classic GM truck or SUV. Engineered with Progressive Engagement Valving, these twin-tube shocks help reduce harsh initial impacts at low speeds while maintaining firm control during high-speed maneuvers or off-road excursions. The large body holds all-weather fluid for cooler operation, ensuring consistent performance in extreme temperatures ranging from -40 to 248°F.

Built for the rigors of both pavement and trail, the RS55151 features a 16mm nitro-carburized piston rod to resist scuffing and corrosion, paired with double-welded loops at high-stress points. The internal nitrogen gas charge is pressurized to 150 PSI, effectively minimizing air-to-oil mixture to prevent foaming and damping fade during heavy use.

• Progressive Engagement Valving reduces initial impact and minimizes rough ride
• 35mm sintered iron piston for enhanced structural integrity
• 150 PSI nitrogen gas pressure reduces aeration and foaming
• Low-friction, self-lubricating seal helps retain gas and oil for quicker rebound
• Polyurethane rebound bumper and rubber bushings help absorb ride harshness
• Includes polyvinyl protective boot to shield the rod and seal from debris
• Manufacturer Part Number: RS55151

Fits select 1988-2005 Cadillac Escalade, Chevrolet Astro, Blazer, K-Series Trucks, Tahoe, GMC Safari, Yukon, and Oldsmobile Bravada models.

The Rancho RS5000X series (RS55150) is a nitrogen-gas-pressurized shock absorber designed to replace worn factory units on full-size GM trucks, SUVs, and vans. Utilizing Rancho’s Cross Tuned technology, this shock features an exclusive rebound valving system and an advanced compression phase to maintain vehicle control while absorbing harsh impacts on and off-road. The twin-tube body is nitrogen-charged to 150 PSI, which reduces aeration and foaming to ensure consistent damping performance under heavy load or high-temperature conditions.

• Durable Construction: Features a 16mm nitro-carburized piston rod to resist scuffs and corrosion, along with a 35mm sintered iron piston for structural integrity.
• Advanced Valving: Progressive Engagement Valving is custom-tuned to reduce initial impacts at low speeds and minimize ride harshness.
• Temperature Resistance: All-weather fluid allows for consistent operation in internal temperatures ranging from -40°F to 248°F.
• Reliable Seals: Fluon-banded piston and self-lubricating seal provide a smoother rebound and quicker response to changing road conditions.
• Hardware Included: Comes with a polyvinyl protective boot and rubber bushings to protect the rod and absorb road vibrations.

Fits select 2014-2025 Ford F-150 models including XL, XLT, Lariat, King Ranch, Platinum, and Limited submodels.

The Rancho RS5000X shock absorber (RS55149) uses advanced Cross Tuned technology to provide a significant upgrade in handling and control for your pickup. At the core of its performance is the exclusive Progressive Engagement Valving (PEV) system, which is custom-tuned to reduce initial impacts at low speeds while maintaining firm control during aggressive maneuvers or off-road use. This twin-tube gas-pressurized design ensures your F-150 stays planted, whether you are on the job site or the trail.

• Durable Construction: Built with a 16mm nitro-carburized piston rod for scuff and corrosion resistance, plus a 35mm sintered iron piston for maximum structural integrity.
• Temperature Resistance: The large twin-tube body is filled with all-weather fluid capable of withstanding internal temperatures from -40 to 248°F.
• Reduced Fade: Nitrogen gas pressurized to 150 PSI minimizes the air-to-oil mixture to prevent foaming and maintain consistent damping performance under heavy loads.
• Smooth Response: Features a fluon-banded piston for better responsiveness to road changes and a polyurethane rebound bumper to absorb ride harshness.
• Reinforced Design: Double-welded loops at high-stress points and a protective polyvinyl boot ensure long-term reliability in harsh environments.

Fits select 1985-2005 Chevrolet Astro, GMC Safari, Dodge Dakota, and Dodge Durango.

The Rancho RS5000X (RS55147) rear shock absorber is engineered to bridge the gap between street comfort and off-road control. Utilizing a unique Progressive Engagement Valving (PEV) system, this shock minimizes initial impacts at low speeds while providing consistent damping during high-speed transitions. The 150 PSI nitrogen gas charge works in tandem with all-weather fluid to reduce aeration and oil foaming, ensuring the shock maintains its performance even when internal temperatures reach up to 248°F.

Built for durability in demanding environments, the RS5000X features a 16mm nitro-carburized piston rod to resist scuffs and corrosion. The 35mm sintered iron piston and double-welded loops at high-stress areas provide the structural integrity needed for towing, hauling, or trail use. A polyvinyl protective boot is included to shield the rod and seal from road debris and contaminants.

• Cross Tuned Technology: Advanced compression and rebound valving improves handling on and off-road.
• Heavy-Duty Construction: Features a 16mm nitro-carburized rod and 35mm sintered iron piston for long-term reliability.
• Enhanced Ride Quality: Polyurethane rebound bumpers and rubber bushings help absorb harsh vibrations and road noise.
• Consistency: Nitrogen gas pressurized to 150 PSI minimizes damping fade during heavy use.

• Part Number: RS55147
• Piston Diameter: 35mm
• Rod Diameter: 16mm
• Gas Pressure: 150 PSI Nitrogen
• Operating Temperature: -40 to 248°F
• Finish: White with Red Boot

Fits select 1986-1998 Toyota 4Runner, Pickup, and T100 models.

The Rancho RS5000X RS55145 front shock absorber features an advanced Cross Tuned technology with an exclusive progressive valving system to improve handling and control both on and off-road. This twin-tube shock is engineered to maintain performance in harsh conditions, using a 150 PSI nitrogen gas charge to minimize air-to-oil mixture, reducing damping fade and foaming. Its robust construction includes a 35mm sintered iron piston and a 16mm nitro-carburized piston rod for exceptional durability and resistance against corrosion and scuffs.

• Manufacturer Part Number: RS55145
• Valving: Progressive Engagement Valving (PEV) for reduced low-speed impact harshness
• Piston Rod: 16mm nitro-carburized rod for scuff and corrosion resistance
• Piston: 35mm sintered iron piston for enhanced structural integrity
• Gas Charge: Pressurized nitrogen gas at 150 PSI reduces damping fade
• Fluid Type: All-weather fluid for consistent operation from -40 to 248°F
• Protective Boot: Polyvinyl boot and polyurethane rebound bumper included
• Mounting: Double-welded loops at stress areas for off-road durability

Fits select 1984-1998 Toyota 4Runner, Land Cruiser, Pickup, and Tacoma models.

The Rancho RS5000X Rear Shock Absorber (RS55144) is engineered for versatile performance, bridging the gap between daily street driving and rugged off-road use. Utilizing Rancho's exclusive Cross Tuned technology, this twin-tube shock features a unique rebound valving system and an advanced compression phase that improves handling and reduces impact harshness across various terrains.

Built for durability, the RS5000X is constructed with a large twin-tube body and a 16mm nitro-carburized piston rod to resist scuffs and corrosion. The internal 35mm sintered iron piston provides structural integrity, while the nitrogen gas charge, pressurized to 150 PSI, minimizes aeration and foaming to prevent damping fade during intensive use. A self-lubricating seal and fluon-banded piston ensure smooth operation and quick response to changing road conditions.

• Cross Tuned Technology: Advanced valving for improved control on and off-road.
• Heavy-Duty Construction: 16mm nitro-carburized rod and 35mm sintered iron piston.
• Temperature Resistance: All-weather fluid handles internal temperatures from -40 to 248°F.
• Reduced Fade: 150 PSI nitrogen gas pressurization minimizes air-to-oil mixture.
• Impact Absorption: Polyurethane rebound bumper and rubber bushings reduce ride harshness.
• Protective Boot: Includes a polyvinyl boot to shield the rod and seal from debris.
• Manufacturer Part Number: RS55144

Fits select 1966-1996 Ford Bronco, F-150, F-250, and E-Series, Toyota Pickup and 4Runner, Mazda B-Series and Navajo, and International Scout 800.

The Rancho RS5000X series redefines off-road performance using Progressive Engagement Valving (PEV). This custom-tuned system uses a specialized internal rebound valving and an advanced compression phase to reduce initial impacts at low speeds while maintaining firm control during aggressive maneuvers. Whether navigating technical trails or highway stretches, the twin-tube gas-pressurized design ensures consistent damping and reduced fade.

• Precision Engineering: Features a 35mm sintered iron piston for structural integrity and a 16mm nitro-carburized piston rod for superior scuff and corrosion resistance.
• Gas Pressurized: Charged with nitrogen gas to 150 PSI to minimize aeration and foaming, ensuring stable performance under heavy cycling.
• Extreme Durability: Double-welded loops at stress points and a polyvinyl protective boot shield the self-lubricating seal from debris.
• All-Weather Performance: Large twin-tube body is filled with specialized fluid capable of withstanding internal temperatures from -40 to 248°F.
• Smooth Operation: Polyurethane rebound bumpers and fluon-banded pistons provide a smoother rebound and quicker response to changing road conditions.
• Manufacturer Part Number: RS55136

Fits 1984-2001 Jeep Cherokee and 1984-1990 Jeep Wagoneer.

The Rancho RS5000X RS55129 rear shock absorber utilizes a unique Progressive Engagement Valving system to provide a custom-tuned ride for your Jeep. Engineered for both on-road stability and off-road capability, this twin-tube gas shock features a patented internal design that reduces initial impacts at low speeds while maintaining control during high-speed compression. The 150 PSI nitrogen gas charge minimizes aeration and foaming, ensuring consistent damping performance even under heavy articulation.

Built to withstand the rigors of the trail, the RS5000X is constructed with a 16mm nitro-carburized piston rod for superior corrosion resistance and a 35mm sintered iron piston for structural integrity. Double-welded loops at the stress points and a polyurethane rebound bumper further enhance durability. The large twin-tube body is filled with all-weather fluid, allowing for reliable operation in temperatures ranging from -40 to 248°F.

• Series: RS5000X
• Position: Rear
• Construction: Twin-Tube Gas Pressurized (150 PSI)
• Piston Rod: 16mm nitro-carburized steel
• Piston: 35mm sintered iron
• Valving: Progressive Engagement Valving & Cross Tuned technology
• Hardware: Rubber bushings and protective polyvinyl boot included
• Part Number: RS55129

Fits select 1984-2006 Chevrolet C1500/C2500/C3500 and Tahoe, GMC Yukon and Savana, and Jeep Cherokee, Wrangler, and Grand Cherokee models.

The Rancho RS5000X shock absorber is engineered to deliver a smooth, controlled ride for both street and trail. Featuring Rancho’s exclusive Cross Tuned technology, this twin-tube gas-pressurized shock utilizes a unique valving system that adapts to changing terrain. This Progressive Engagement Valving (PEV) reduces initial impacts at low speeds while maintaining firm control during high-speed maneuvers, effectively minimizing disc flutter and dampening harshness.

Built for long-term durability, the RS5000X is constructed with a 16mm nitro-carburized piston rod for superior scuff and corrosion resistance. The 35mm sintered iron piston and double-welded loops at stress areas provide significant structural integrity. Designed to handle extreme environments, the all-weather fluid allows for consistent operation in internal temperatures ranging from -40 to 248°F.

• Series: RS5000X Cross Tuned Technology
• Piston Rod: 16mm nitro-carburized rod for durability
• Piston: 35mm sintered iron piston for structural strength
• Pressure: Nitrogen gas pressurized to 150 PSI to reduce fade and foaming
• Valving: Application-specific Progressive Engagement Valving
• Protection: Includes polyvinyl protective boot and rubber bushings
• Construction: Double-welded loops and polyurethane rebound bumper
• Manufacturer Part Number: RS55128

Fits 1983-2011 Ford Ranger (All trims including XL, XLT, Sport, STX, and FX4).

The Rancho RS5000X series shock absorber utilizes advanced Cross Tuned technology to deliver a significant upgrade in handling and control for your Ford Ranger. Designed for both on-road stability and off-road durability, this twin-tube shock features an exclusive Progressive Engagement Valving system. This system is custom-tuned to reduce initial impacts at low speeds while maintaining firm control during high-speed maneuvers, effectively minimizing ride harshness across varied terrain.

Built to withstand extreme conditions, the RS55126 is nitrogen gas-pressurized to 150 PSI to minimize aeration and foaming, ensuring consistent damping performance even during heavy use. The 16mm nitro-carburized piston rod provides superior resistance to scuffs and corrosion, while the 35mm sintered iron piston adds structural integrity to the internal assembly. Every shock is finished with a protective polyvinyl boot to shield the rod and seal from debris.

• Cross Tuned Technology: Features exclusive rebound valving and advanced compression phases for improved handling.
• Reduced Fade: Nitrogen gas charged to 150 PSI to minimize oil foaming and maintain damping performance.
• Durable Construction: 16mm nitro-carburized piston rod and double-welded loops at stress points for maximum longevity.
• All-Weather Fluid: Formulated to withstand internal temperatures from -40°F to 248°F.
• Smooth Operation: Polyurethane rebound bumper and fluon-banded piston enhance responsiveness and absorb ride harshness.

• Manufacturer Part Number: RS55126
• Piston Diameter: 35mm
• Piston Rod Diameter: 16mm
• Body Design: Twin-tube
• Gas Type: Nitrogen (150 PSI)

Fits select 1983-2011 Ford Ranger, 1984-1990 Ford Bronco II, and 1994-2009 Mazda B-Series (B2300, B2500, B3000, B4000) trucks.

The Rancho RS5000X (MPN: RS55125) rear shock absorber is engineered to improve handling and reduce ride harshness on and off-road. Using Cross Tuned technology and exclusive Progressive Engagement Valving, this twin-tube shock is custom-tuned for each application to minimize initial impacts at low speeds while maintaining firm control during high-speed transitions. The large 2.25-inch body is nitrogen gas pressurized to 150 PSI, which reduces damping fade and oil foaming for consistent performance in demanding conditions.

• Precision Engineering: Features 16mm nitro-carburized piston rod for scuff and corrosion resistance, double-welded loops at stress areas, and a 35mm sintered iron piston for structural integrity.
• Smooth Damping: Polyurethane rebound bumpers and rubber bushings absorb ride harshness, while a fluon-banded piston enhances responsiveness to changing road surfaces.
• Temperature Resilient: Filled with all-weather fluid capable of withstanding internal temperatures from -40° to 248°F.
• Protective Design: Includes a durable polyvinyl protective boot to shield the rod and oil seal from debris.
• Specifications: 150 PSI gas pressure, 16mm rod diameter, 35mm piston bore, self-lubricating seal.

The Rancho RS5000X Rear Shock Absorber (RS55124) fits select 1982-2014 Cadillac, Chevrolet, GMC, Dodge, Isuzu, and Oldsmobile trucks and SUVs. This twin-tube shock utilizes Rancho’s Cross Tuned technology, featuring a unique rebound valving system and an advanced compression phase to improve handling both on-road and off.

Designed for durability under extreme conditions, the RS5000X features a 16mm nitro-carburized piston rod to resist scuffing and corrosion, paired with double-welded loops at critical stress points. The large twin-tube body is filled with all-weather fluid capable of withstanding internal temperatures from -40 to 248°F, ensuring consistent performance regardless of the environment.

• Precision Valving: Progressive Engagement Valving reduces initial impact at low speeds while the Compression Control Valve regulates fluid transfer to prevent disc flutter.
• Reduced Fade: Nitrogen gas pressurized to 150 PSI minimizes air-to-oil mixture to prevent foaming and damping performance fade.
• Built for Longevity: Features a 35mm sintered iron piston, low-friction self-lubricating seal, and a fluon-banded piston for enhanced responsiveness.
• Ride Quality: Polyurethane rebound bumpers and rubber bushings absorb harshness for a smoother ride.
• Specifications: 16mm nitro-carburized rod, 35mm sintered iron piston, 150 PSI nitrogen gas charged, and includes a polyvinyl protective boot.
• Manufacturer Part Number: RS55124

Fits select 1983-2005 Chevrolet Blazer and S10, GMC Jimmy, Sonoma, S15, Syclone, and Typhoon, Isuzu Hombre, and Oldsmobile Bravada.

The Rancho RS5000X Front Shock Absorber (RS55123) is engineered to deliver a significant upgrade in ride quality and handling for both on-road and off-road applications. Featuring Rancho's exclusive Cross Tuned technology, this twin-tube gas shock utilizes a unique Progressive Engagement Valving system. This design allows for a smooth, comfortable ride during normal driving conditions while providing increased control and damping force when encountering rough terrain or sharp impacts.

• Precision Valving: Progressive Engagement Valving reduces initial impact harshness at low speeds and maintains vehicle control during high-speed maneuvers.
• Durable Construction: Built with a 16mm nitro-carburized piston rod to resist scuffs and corrosion, and a 35mm sintered iron piston for structural integrity.
• Reduced Fade: Nitrogen gas pressurized to 150 PSI minimizes aeration and foaming, ensuring consistent damping performance under heavy use.
• All-Weather Performance: Filled with application-specific fluid to withstand internal temperatures from -40 to 248°F.
• Enhanced Protection: Includes a polyvinyl protective boot to shield the rod and seal from trail debris and road grime.
• Direct Fit: Replaces factory units with double-welded loops at stress areas for maximum durability.