Fits 2005-2016 Ford F-250 and F-350 Super Duty 4WD models equipped with 6 to 8 inches of rear lift.

The Fox 2.5 Performance Series IFP (Internal Floating Piston) HTO shocks are designed to provide consistent, fade-resistant damping for heavy-duty trucks in demanding off-road environments. These shocks feature a large-diameter 2.5-inch impact-extruded 6061-T6 aluminum body, which dissipates heat more effectively than standard steel bodies while providing superior corrosion resistance. The integrated Hydraulic Top Out (HTO) piston provides a controlled cushion at the end of the extension stroke, preventing harsh bottoming out and protecting the suspension during full droop travel.

Inside, the internal floating piston separates the high-pressure nitrogen gas from the shock oil, eliminating oil aeration and ensuring the velocity-sensitive damping remains predictable over rough terrain. This shock is fully serviceable and can be re-tuned or rebuilt to maintain performance for the life of the vehicle.

• Manufacturer Part Number: 987-24-057
• Shock Body: 2.5-inch impact extruded 6061-T6 aluminum
• Body Plating: Type II clear-anodized for corrosion resistance
• Shaft: 5/8-inch hard chrome plated heat-treated alloy steel
• Piston: Race-developed high-flow manual damping
• Internal Technology: Internal Floating Piston (IFP) and Hydraulic Top Out (HTO)
• Adjustability: Fully rebuildable and re-tunable

Fits select 2005-2016 Ford F-250 and F-350 Super Duty 4WD models equipped with 4-6 inches of rear lift.

The Fox 2.5 Performance Series IFP HTO shock is engineered to transform your Ford Super Duty's off-road performance without sacrificing highway manners. Featuring a larger 2.5-inch diameter body, this shock provides significantly higher oil capacity and surface area for heat dissipation compared to standard 2.0-inch shocks, ensuring consistent, fade-free damping during sustained cycles. The Internal Floating Piston (IFP) separates the nitrogen charge from the shock oil to prevent aeration, while the integrated Hydraulic Top Out (HTO) piston provides a controlled cushion at the end of the extension stroke, preventing harsh bottoming-out during aggressive suspension drop-outs.

• 2.5-inch impact-extruded 6061-T6 aluminum body for superior heat dissipation and corrosion resistance
• Internal Floating Piston (IFP) design eliminates oil aeration for consistent damping
• Hydraulic Top Out (HTO) technology reduces noise and vibration at full suspension extension
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• Type II clear-anodized finish for long-lasting protection
• High-flow velocity-sensitive damping for application-specific tuning
• Fully rebuildable and re-tunable for long-term serviceability
• Manufacturer Part Number: 987-24-056

Fits select 2005-2016 Ford F-250 and F-350 Super Duty models (XL, XLT, Lariat, King Ranch, Platinum, FX4, Harley-Davidson, Cabela's) with 2-3.5 inches of rear lift.

The FOX 2.5 Performance Series IFP HTO rear shock is engineered to enhance the off-road capability and on-road stability of your Ford Super Duty. The 2.5-inch impact-extruded 6061-T6 aluminum body provides superior heat dissipation compared to traditional steel shocks, ensuring fade-resistant performance during demanding use. This shock features an Internal Floating Piston (IFP) to separate nitrogen gas from the shock oil, preventing aeration and maintaining consistent damping across varied terrain.

Unique to this application is the Hydraulic Top Out (HTO) piston, which acts as a controlled cushion at the end of the rebound stroke. This prevents harsh metal-to-metal contact at full suspension extension, protecting your components during heavy drop-out travel. The high-flow velocity-sensitive damping is specifically tuned for the F-250/F-350 chassis to reduce vehicle sway and provide a more connected ride feel.

• 2.5-inch impact-extruded 6061-T6 aluminum shock body
• Type II clear-anodized finish for maximum corrosion resistance
• Internal Floating Piston (IFP) design eliminates oil aeration
• Hydraulic Top Out (HTO) piston for controlled extension
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• Race-developed high-flow velocity-sensitive damping
• Fully rebuildable and re-tunable for long-term service life
• Manufacturer Part Number: 987-24-055

Fits 2005-2016 Ford F-250 and F-350 Super Duty models with 0-1.5 inches of rear lift.

The Fox 2.5 Performance Series IFP HTO rear shock is engineered to provide professional-grade damping and control for your Super Duty. Its 2.5-inch impact-extruded 6061-T6 aluminum body dissipates heat up to four times faster than traditional steel shocks, ensuring consistent, fade-resistant performance even under heavy loads. The Internal Floating Piston (IFP) technology separates the shock oil from the high-pressure nitrogen gas chamber, eliminating oil aeration and foaming for a more connected and stable ride.

This HTO (Hydraulic Top Out) model features a specialized internal piston designed to manage the shock's extension, significantly reducing harshness when the suspension reaching full travel. Fully rebuildable and re-tunable, this shock is designed for long-term durability in harsh environments.

• Shock Body: 2.5-inch impact extruded 6061-T6 aluminum with Type II clear-anodized finish
• Shaft: 5/8-inch hard chrome plated heat-treated alloy steel
• Damping: High-flow velocity-sensitive damping with application-specific tuning
• Piston: Internal Floating Piston (IFP) and Hydraulic Top Out (HTO) piston
• Mounting: Direct replacement for factory mounting points
• Manufacturer Part Number: 987-24-054

Fits 2024-2026 Toyota Tacoma (SR, SR5, TRD Sport, TRD Off-Road, TRD PreRunner, Limited, TRD Pro, and Trailhunter).

The Fox 2.5 Performance Series IFP (Internal Floating Piston) rear shock is engineered to enhance the off-road capabilities and on-road manners of the 4th Generation Toyota Tacoma. By utilizing a 2.5-inch impact-extruded 6061-T6 aluminum body, this shock dissipates heat significantly more efficiently than conventional steel shocks, maintaining consistent damping performance even during aggressive cycles. The internal floating piston architecture separates the shock oil from the high-pressure nitrogen gas chamber, preventing aeration and ensuring fade-resistant, high-flow velocity-sensitive damping.

Designed for applications with 0 to 1 inch of rear lift, these shocks provide increased drop-out travel and vehicle stability. Every unit features an application-specific tune to reduce vehicle sway and provide a connected, controlled ride. The Type II clear-anodized finish and hard chrome-plated shaft provide superior corrosion resistance for long-term durability in harsh environments.

• 2.5-inch impact-extruded 6061-T6 aluminum shock body
• Internal Floating Piston (IFP) design eliminates oil aeration
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• Type II clear-anodized body plating for corrosion protection
• High-flow, velocity-sensitive damping with application-specific valving
• Fully rebuildable and re-tunable for a lifetime of use
• Direct bolt-on installation for 0-1" rear lift heights
• Manufacturer Part Number: 987-24-052

Fits 2014-2025 Ram 3500 models with 0-3 inches of rear lift.

The FOX 2.5 Performance Series HTO shock is a bolt-on upgrade engineered for heavy-duty trucks that demand superior damping control and heat management. Featuring an oversized 2.5-inch impact-extruded 6061-T6 aluminum body, this shock dissipates heat more efficiently than standard steel bodies while providing the internal volume necessary for consistent performance. The Internal Floating Piston (IFP) design separates the high-pressure nitrogen charge from the shock oil, eliminating aeration and ensuring fade-free damping during sustained off-road use.

Specifically tuned for the Ram 3500, this shock features Hydraulic Top Out (HTO) technology. HTO utilizes a secondary shim stack to slow the shaft speed during extension, effectively managing the rebound energy of heavy wheel and tire packages. This eliminates the harsh mechanical "top-out" clunk often felt in lifted applications, significantly increasing ride comfort and control on and off the pavement.

• Construction: 2.5-inch impact-extruded 6061-T6 aluminum body with Type II clear-anodized finish
• Internal Technology: Internal Floating Piston (IFP) and Hydraulic Top Out (HTO) piston
• Shaft: 5/8-inch hard chrome-plated, heat-treated alloy steel
• Valving: Application-specific, high-flow velocity-sensitive damping
• Serviceability: Fully rebuildable and re-tunable design
• MPN: 987-24-050

Fits 2014-2025 Ram 2500 4WD models equipped with a 4-5 inch rear lift. This Performance Series 2.5 IFP HTO shock is engineered to increase off-road capability by extending drop-out travel while maintaining superior on-road comfort and vehicle control.

Each shock features a 2.5-inch impact-extruded 6061-T6 aluminum body that dissipates heat four times faster than conventional steel shocks. The Internal Floating Piston (IFP) design separates the high-pressure nitrogen gas from the shock oil, preventing aeration and ensuring fade-resistant performance during aggressive use. The integrated Hydraulic Top Out (HTO) piston provides additional damping at the end of the extension stroke to prevent harsh bottoming or mechanical clank.

• Body: 2.5-inch 6061-T6 impact-extruded aluminum with Type II clear-anodized finish
• Shaft: 5/8-inch hard chrome plated heat-treated alloy steel
• Piston: Race-developed high-flow piston with application-specific valving
• Seals: Redundant sealing pack system with main seal, wiper seal, and scraper seal
• Features: Fully rebuildable and re-tunable internal floating piston (IFP) and Hydraulic Top Out (HTO) piston
• Part Number: 987-24-049

Fits 2014-2025 Ram 2500 and 3500 trucks equipped with 4-6 inches of front suspension lift. This Fox Performance Series 2.5 IFP HTO shock is engineered to increase off-road capability by extending drop-out travel while maintaining precise on-road handling and vehicle control.

Constructed with a 2.5-inch impact-extruded 6061-T6 aluminum body, this shock dissipates heat four times more effectively than conventional steel bodies. The Internal Floating Piston (IFP) separates the shock oil from the high-pressure nitrogen gas chamber, eliminating oil aeration and ensuring fade-free performance during aggressive driving. The specialized Hydraulic Top Out (HTO) piston provides a controlled limit to suspension extension, protecting internal components and improving ride quality at the limit of travel.

• 2.5-inch impact extruded 6061-T6 aluminum shock body with Type II clear-anodized finish
• Internal Floating Piston (IFP) design ensures consistent damping performance
• Hydraulic Top Out (HTO) piston for superior extension control
• 5/8-inch hard chrome heat-treated alloy steel shaft
• High-flow, velocity-sensitive damping with application-specific tuning
• Fully rebuildable and re-tunable for long-term serviceability
• Manufacturer Part Number: 987-24-048

Fits 2014-2025 Ram 2500 models equipped with a 2-3 inch rear lift.

The Fox 2.5 Performance Series IFP HTO rear shock brings race-developed damping technology to the Ram 2500 platform. Engineered for increased heat dissipation, the 2.5-inch 6061-T6 impact-extruded aluminum body manages thermal loads up to four times more effectively than traditional steel shocks. This mono-tube design features an Internal Floating Piston (IFP) to separate high-pressure nitrogen gas from the shock oil, eliminating aeration and ensuring consistent, fade-free performance through demanding terrain.

This shock is specifically tuned for heavy-duty applications and features a Hydraulic Top Out (HTO) piston to manage extension forces and provide a smoother ride at the limits of suspension travel. The 5/8-inch hard chrome-plated shaft and velocity-sensitive damping provide a connected feel on the pavement while allowing for maximum articulation off-road. For long-term durability, the body is protected by Type II clear-anodized plating and is fully rebuildable and re-tunable.

• Manufacturer Part Number: 987-24-047
• 2.5-inch 6061-T6 impact-extruded aluminum shock body
• Internal Floating Piston (IFP) eliminates oil aeration
• Hydraulic Top Out (HTO) internal piston for controlled extension
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• Type II clear-anodized finish for superior corrosion resistance
• High-flow, velocity-sensitive damping
• Fully rebuildable and re-tunable

Fits select 2014-2025 Ram 2500 and 3500 models with a 3-4 inch front lift.

The Fox 2.5 Performance Series IFP HTO front shock is engineered to enhance off-road control and on-road comfort for heavy-duty Ram trucks. Featuring a massive 2.5-inch impact-extruded 6061-T6 aluminum body, this shock dissipates heat four times more effectively than conventional steel bodies, ensuring consistent performance and preventing fade during rigorous use. The internal floating piston (IFP) design keeps the high-pressure nitrogen gas separate from the shock oil, preventing aeration for stable damping in all conditions.

Equipped with a Hydraulic Top Out (HTO) piston, this shock provides a controlled deceleration at the end of the extension stroke, protecting your suspension components and improving ride quality during aggressive drop-out travel. The high-flow, velocity-sensitive damping is specifically tuned for the heavy-duty chassis and weight of the Ram 2500 and 3500 platforms.

• Manufacturer Part Number: 987-24-046
• 2.5-inch impact-extruded 6061-T6 aluminum shock body
• Type II clear-anodized finish for superior corrosion resistance
• Internal Floating Piston (IFP) eliminates oil aeration and foaming
• Hydraulic Top Out (HTO) piston manages extension energy
• 5/8-inch hard chrome plated heat-treated alloy steel shaft
• Race-developed high-flow, velocity-sensitive damping
• Fully rebuildable and re-tunable for long-term serviceability

The FOX 2.5 Performance Series Universal Smooth Body shock (987-24-038) delivers professional-grade damping for custom applications requiring 8.1 inches of travel. Built with a 2.5-inch impact-extruded 6061-T6 aluminum body, this shock dissipates heat more effectively than traditional steel bodies while providing superior corrosion resistance through its Type II clear-anodized finish.

Internally, the Internal Floating Piston (IFP) technology separates the high-pressure nitrogen gas from the shock oil to eliminate aeration and ensure fade-free performance in demanding environments. This model also features an integrated Hydraulic Top Out (HTO) piston for controlled extension. The high-flow, velocity-sensitive damping and 5/8-inch hard chrome plated shaft provide a connected ride with reduced vehicle sway.

• Manufacturer Part Number: 987-24-038
• Body: 2.5-inch impact-extruded 6061-T6 aluminum
• Finish: Type II clear-anodized plating
• Shaft: 5/8-inch hard chrome plated heat-treated alloy steel
• Piston: Race-developed high-flow piston design
• Valving: Application-specific velocity-sensitive valving
• Technology: Internal Floating Piston (IFP) and Hydraulic Top Out (HTO)
• Travel: 8.1 inches
• Mounting: Eyelet ends
• Serviceability: Fully rebuildable and re-tunable

Fits select 2011-2026 Chevrolet Silverado 2500 HD/3500 HD and GMC Sierra 2500 HD/3500 HD with 4 to 6 inches of rear lift.

The Fox Performance Series 2.5 Smooth Body IFP HTO shock delivers race-proven damping technology for heavy-duty trucks requiring extended travel. Engineered for vehicles with 4-6 inch lift kits, this shock features a massive 2.5-inch impact-extruded 6061-T6 aluminum body that dissipates heat four times faster than conventional steel shocks, maintaining consistent damping under heavy loads. The internal floating piston (IFP) isolates the high-pressure nitrogen gas from the shock oil, eliminating aeration and performance fade during demanding off-road use or towing.

Equipped with a Hydraulic Top Out (HTO) piston, this shock manages the end of the extension stroke for a more controlled ride during high-articulation events. The application-specific valving is tuned to reduce vehicle sway and improve on-road stability while maintaining plush off-road compliance. Every unit is fully rebuildable and re-tunable, providing a long-term solution for enthusiasts and professionals alike.

• Manufacturer Part Number: 987-24-035
• Shock Body: 2.5" Impact Extruded 6061-T6 Aluminum
• Shaft: 5/8" Hard Chrome plated heat-treated alloy steel
• Piston Technology: Internal Floating Piston (IFP) and Hydraulic Top Out (HTO)
• Damping: High-flow, velocity-sensitive valving
• Finish: Type II clear-anodized for corrosion resistance
• Hardware: Application-specific bushings and mounting hardware

Fits select 2020-2026 Chevrolet Silverado 2500 HD/3500 HD and GMC Sierra 2500 HD/3500 HD models equipped with 4 to 6 inches of front lift.

The Fox 2.5 Performance Series Smooth Body IFP HTO shock is engineered to deliver professional-grade damping for heavy-duty trucks. Built with a 2.5-inch impact-extruded 6061-T6 aluminum body, this shock dissipates heat four times more effectively than conventional steel-bodied alternatives, ensuring consistent performance during extended off-road use. The internal floating piston (IFP) architecture separates high-pressure nitrogen gas from the shock oil, eliminating aeration and oil foaming for fade-resistant damping.

This specific HTO model features a Hydraulic Top Out piston, designed to control the end of the extension stroke and prevent harsh bottom-out or top-out sensations when navigating rough terrain. The velocity-sensitive valving is application-specific, providing a connected on-road feel with significantly reduced vehicle sway while maximizing drop-out travel for off-road articulation.

• Manufacturer Part Number: 987-24-033
• 2.5-inch impact-extruded 6061-T6 aluminum body
• Type II clear-anodized body plating for corrosion resistance
• Internal Floating Piston (IFP) eliminates oil aeration
• Hydraulic Top Out (HTO) piston controls extension stroke
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• Race-developed high-flow damping piston
• Fully rebuildable and re-tunable for long-term serviceability

Fits select 2011-2019 Chevrolet Silverado and GMC Sierra 2500/3500 HD models equipped with a 4-6 inch front lift.

The FOX 2.5 Performance Series Smooth Body IFP HTO shock provides race-proven damping technology in a bolt-on package for heavy-duty trucks. The 2.5-inch impact-extruded 6061-T6 aluminum body provides superior heat dissipation compared to traditional steel, ensuring consistent performance even during long periods of cycling. Its Internal Floating Piston (IFP) design separates shock oil from the high-pressure nitrogen gas chamber, eliminating oil aeration and preventing performance fade.

Equipped with a Hydraulic Top Out (HTO) piston, this shock is designed to manage extension forces and increase drop-out travel. The high-flow, velocity-sensitive damping is specifically tuned for the GM HD chassis to reduce vehicle sway and improve road feel. These shocks are fully rebuildable and re-tunable, offering long-term serviceability for extreme applications.

• Manufacturer Part Number: 987-24-032
• Body: 2.5-inch impact extruded 6061-T6 aluminum
• Finish: Type II clear-anodized for corrosion resistance
• Shaft: 5/8-inch hard chrome plated heat-treated alloy steel
• Piston: Race-developed high-flow design
• Valving: Application-specific performance tuning
• Internal Technology: Internal Floating Piston (IFP) and Hydraulic Top Out (HTO)
• Installation: Replaces front shocks in 4-6 inch lift applications

Fits 2011-2019 Chevrolet Silverado 2500 HD/3500 HD and GMC Sierra 2500 HD/3500 HD with 1.5-3.5" of front lift.

The Fox 2.5 Performance Series Smooth Body IFP HTO shock is designed to provide professional-grade damping for heavy-duty trucks. The larger 2.5-inch diameter impact-extruded aluminum body offers significantly higher oil capacity and heat dissipation compared to smaller shocks, reducing fade during demanding off-road use or heavy towing. This model features a Hydraulic Top Out (HTO) piston to manage extension forces and an Internal Floating Piston (IFP) to keep the high-pressure nitrogen gas separate from the oil, preventing aeration.

Constructed with a race-developed high-flow piston and application-specific valving, these shocks deliver a controlled, connected ride that minimizes vehicle sway on the pavement while maximizing drop-out travel off-road. The clear-anodized 6061-T6 aluminum body is resistant to corrosion and built to endure harsh environments. Every component is fully rebuildable and re-tunable, ensuring a lifetime of consistent performance.

• Manufacturer Part Number: 987-24-031
• Body Material: 2.5" impact-extruded 6061-T6 aluminum
• Finish: Type II clear-anodized plating
• Shaft: 5/8" hard chrome-plated heat-treated alloy steel
• Piston: Race-developed high-flow damping design
• Technology: Internal Floating Piston (IFP) and Hydraulic Top Out (HTO)
• Valving: Application-specific velocity-sensitive damping
• Serviceability: Fully rebuildable and re-tunable

Fits select 2019-2026 Chevrolet Silverado 1500 and GMC Sierra 1500 models.

The Fox Performance Series 2.5 Smooth Body IFP (Internal Floating Piston) rear shock provides the increased damping and heat dissipation needed for off-road control without compromising on-road ride quality. Designed for trucks with 0-2 inches of rear lift, this shock utilizes a larger 2.5-inch diameter body to increase oil capacity and cooling surface area, effectively reducing shock fade during aggressive use. The internal floating piston separates the high-pressure nitrogen gas from the shock oil, preventing aeration and ensuring consistent damping performance across varied terrain.

Each shock is built with a 6061-T6 impact-extruded aluminum body to dissipate heat four times faster than conventional steel shocks. For long-term durability and maintenance, these units are fully rebuildable and re-tunable, featuring corrosion-resistant plating and a hard chrome-plated shaft designed to withstand harsh environments.

• Body: 2.5-inch impact-extruded 6061-T6 aluminum with Type II clear-anodized finish
• Internal Design: IFP (Internal Floating Piston) mono-tube design
• Shaft: 5/8-inch hard chrome-plated heat-treated alloy steel
• Piston: Race-developed high-flow velocity-sensitive damping
• Valving: Application-specific tune for GM 1500 platforms
• Mounting: Quiet nitrile rubber bushings for increased suspension articulation
• Lift Compatibility: 0-2 inches of rear lift
• Manufacturer Part Number: 987-24-029

Fits select 2019-2026 Chevrolet Silverado 1500 and GMC Sierra 1500 models, including Trail Boss, AT4, and ZR2 trims.

The Fox Performance Series 2.5 Smooth Body IFP (Internal Floating Piston) shock delivers increased damping capacity and superior heat management compared to standard 2.0-inch shocks. Designed for truck owners who demand consistent performance during off-road use without sacrificing on-road comfort, these shocks utilize a 2.5-inch impact-extruded 6061-T6 aluminum body to dissipate heat four times faster than conventional steel shocks. The internal floating piston separates the high-pressure nitrogen gas from the shock oil, preventing aeration and oil foaming for fade-free damping in harsh terrain.

Each shock is equipped with a 5/8-inch hard chrome-plated heat-treated alloy steel shaft and high-flow velocity-sensitive damping for a controlled, connected ride. These units are fully rebuildable and re-tunable, ensuring a lifetime of serviceability. The Type II clear-anodized finish provides a durable barrier against corrosion in salt and debris-heavy environments.

• 2.5-inch impact extruded 6061-T6 aluminum body for superior cooling
• Internal Floating Piston (IFP) eliminates oil aeration
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• Type II clear-anodized plating for corrosion resistance
• Application-specific valving for Chevrolet/GMC 1500 platforms
• Fully rebuildable and re-tunable design
• Manufacturer Part Number: 987-24-028

Fits 2014-2025 Ram 3500 4WD models with 0-1.5 inches of rear lift.

The Fox 2.5 Performance Series Smooth Body IFP HTO shock is engineered to provide superior damping for heavy-duty applications. Designed for the 2014-2025 Ram 3500 4WD, this shock utilizes a 2.5-inch impact-extruded 6061-T6 aluminum body to dissipate heat four times faster than conventional steel shocks, maintaining consistent performance under heavy loads. The Internal Floating Piston (IFP) architecture separates high-pressure nitrogen gas from the shock oil, eliminating aeration and preventing damping fade during repetitive cycles.

This Performance Series shock features a Hydraulic Top Out (HTO) piston to manage extension forces and high-flow velocity-sensitive damping for a controlled, connected ride. Each unit is fully rebuildable and re-tunable, ensuring long-term serviceability. The Type II clear-anodized finish protects against corrosion in harsh environments, while the 5/8-inch hard chrome-plated heat-treated alloy steel shaft provides a durable seal surface for the redundant sealing system.

• Manufacturer Part Number: 987-24-027
• 2.5-inch impact extruded 6061-T6 aluminum body
• Internal Floating Piston (IFP) separates oil and gas
• Hydraulic Top Out (HTO) piston for controlled extension
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• Type II clear-anodized body plating for corrosion resistance
• High-flow velocity-sensitive damping
• Fully rebuildable and re-tunable design

Fits 2005-2023 Toyota Tacoma RWD models including Base, Pre Runner, SR, SR5, TRD Sport, TRD Off-Road, and TRD Pro.

The FOX 2.5 Performance Series IFP rear shock is engineered to increase off-road capability by extending drop-out travel while maintaining on-road comfort. Unlike standard steel-body shocks, the 2.5-inch impact-extruded 6061-T6 aluminum body dissipates heat four times more effectively, significantly reducing shock fade during aggressive use. The internal floating piston (IFP) design separates the high-pressure nitrogen gas from the shock oil, preventing aeration and ensuring consistent, velocity-sensitive damping in demanding terrain.

Built for longevity, these shocks feature a 5/8-inch hard chrome-plated heat-treated alloy steel shaft and a race-developed high-flow piston. The Type II clear-anodized finish provides superior corrosion resistance in harsh environments. As a professional-grade component, this shock is fully rebuildable and re-tunable to meet specific driving requirements over its lifetime.

• 2.5-inch impact-extruded 6061-T6 aluminum shock body
• Type II clear-anodized finish for corrosion resistance
• Internal Floating Piston (IFP) separates gas and oil to prevent aeration
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• Race-developed high-flow velocity-sensitive damping
• Fully rebuildable and re-tunable design
• Manufacturer Part Number: 987-24-026

Fits select 2020-2026 Chevrolet Silverado and GMC Sierra 2500 HD and 3500 HD models.

The Fox 2.5 Performance Series shock is engineered to enhance the off-road capability of your heavy-duty truck by extending drop-out travel while maintaining superior on-road comfort. Built with a 2.5-inch impact-extruded 6061-T6 aluminum body, this shock dissipates heat four times more effectively than traditional steel-bodied shocks. The internal floating piston (IFP) design isolates the high-pressure nitrogen gas from the shock oil, preventing aeration and ensuring fade-resistant performance under demanding conditions.

This application-specific tuned shock utilizes high-flow velocity-sensitive damping and a hydraulic top-out (HTO) piston for controlled movement throughout the entire suspension stroke. The Type II clear-anodized finish provides excellent corrosion resistance, and the 5/8-inch hard chrome-plated heat-treated alloy steel shaft is designed for long-term durability in harsh environments.

• 2.5-inch impact-extruded 6061-T6 aluminum body with Type II clear-anodized plating
• Internal Floating Piston (IFP) eliminates oil aeration for consistent damping
• Hydraulic Top Out (HTO) piston manages end-of-stroke travel
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• Race-developed high-flow damping piston for performance valving
• Fully rebuildable and re-tunable internal components
• Manufacturer Part Number: 987-24-025

Fits select 2005-2026 Ford F-150, F-250 Super Duty, F-350 Super Duty, Maverick, and Ranger.

The Fox 2.5 Performance Series Smooth Body IFP HTO shock is engineered to manage the increased demands of 6-8 inch lift kits, providing superior off-road damping while maintaining a connected, comfortable ride on the street. The 2.5-inch impact-extruded 6061-T6 aluminum body is designed to dissipate heat four times faster than conventional steel shocks, ensuring fade-resistant performance in harsh environments. Featuring an Internal Floating Piston (IFP) to separate oil from the high-pressure nitrogen gas and a Hydraulic Top Out (HTO) piston, this shock provides a controlled, smooth feel throughout the entire suspension stroke.

• 2.5-inch impact-extruded 6061-T6 aluminum shock body with Type II clear-anodized plating
• Internal Floating Piston (IFP) design eliminates oil aeration and foaming
• Hydraulic Top Out (HTO) piston for controlled extension during drop-out
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• High-flow velocity-sensitive damping with application-specific tuning
• Fully rebuildable and re-tunable for maximum service life
• Manufacturer Part Number: 987-24-022

Fits select 2017-2026 Ford F-150, F-150 Lightning, F-250/F-350 Super Duty, Maverick, and Ranger.

The Fox 2.5 Performance Series Smooth Body IFP HTO shock delivers race-proven technology in a bolt-on package. Designed to increase off-road capability by extending drop-out travel, this shock utilizes a 2.5-inch impact-extruded 6061-T6 aluminum body to dissipate heat four times faster than conventional steel bodies. The Internal Floating Piston (IFP) separates the shock oil from the high-pressure, nitrogen-charged gas chamber, while the Hydraulic Top Out (HTO) piston eliminates harsh topping out during aggressive travel.

• 2.5-inch impact-extruded 6061-T6 aluminum body with Type II clear-anodized plating
• Internal Floating Piston (IFP) separates gas and oil to prevent aeration
• Hydraulic Top Out (HTO) piston for controlled extension travel
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• High-flow, velocity-sensitive damping for specific vehicle tuning
• Fully rebuildable and re-tunable for long-term serviceability
• Designed for applications with 4-6 inches of rear lift
• Manufacturer Part Number: 987-24-021

Fits select 2017-2026 Ford F-150, F-250/F-350 Super Duty, Maverick, and Ranger models equipped with 4-6 inches of front lift.

The Fox 2.5 Performance Series Smooth Body IFP HTO shock is engineered to enhance off-road capability while maintaining controlled on-road handling. By utilizing a large-diameter 2.5-inch impact-extruded 6061-T6 aluminum body, this shock dissipates heat more effectively than standard steel shocks, ensuring consistent damping during aggressive use. The internal floating piston (IFP) separates the shock oil from the high-pressure nitrogen gas, preventing aeration and oil foaming for fade-free performance in demanding environments.

This shock features Fox's Hydraulic Top Out (HTO) technology, which provides a cushioned internal stop at the end of the extension stroke to eliminate harsh clunking during maximum travel. The velocity-sensitive damping is specifically tuned for each application to reduce vehicle sway and improve wheel control.

• Manufacturer Part Number: 987-24-020
• 2.5-inch impact-extruded 6061-T6 aluminum shock body
• Internal Floating Piston (IFP) technology for gas/oil separation
• Hydraulic Top Out (HTO) piston for controlled extension
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• Clear-anodized Type II body plating for corrosion resistance
• High-flow, velocity-sensitive damping piston
• Fully rebuildable and re-tunable design

Fits 2020-2025 Jeep Gladiator (JT) models with 3.5-4 inches of rear lift.

The Fox 2.5 Performance Series Smooth Body IFP HTO shock provides professional-grade damping for lifted Jeep Gladiators. Engineered to increase off-road capability by extending drop-out travel, this shock utilizes race-developed technology to improve on-road comfort and significantly reduce vehicle sway. The internal floating piston (IFP) isolates the high-pressure nitrogen gas from the shock oil, preventing aeration and ensuring fade-resistant performance during aggressive off-road use.

Constructed from 2.5-inch impact-extruded 6061-T6 aluminum, the body dissipates heat four times faster than conventional steel shocks. This model features a Hydraulic Top Out (HTO) piston to manage forces at the end of the extension stroke, preventing harsh bottoming-out or topping-out during extreme cycling. Each shock is fully serviceable and can be rebuilt or re-tuned to maintain performance over the life of your vehicle.

• Manufacturer Part Number: 987-24-019
• Body Material: 2.5-inch Impact Extruded 6061-T6 Aluminum
• Body Finish: Type II Clear-Anodized plating
• Shaft Material: 5/8-inch Hard Chrome plated heat-treated alloy steel
• Valving: High-flow, velocity-sensitive damping
• Technology: Internal Floating Piston (IFP) and Hydraulic Top Out (HTO)
• Serviceability: Fully rebuildable and re-tunable

Fits 2020-2025 Jeep Gladiator JT models with 3.5 to 4 inches of front lift.

The Fox 2.5 Performance Series Smooth Body IFP HTO shock provides professional-grade damping for lifted Gladiators, engineered to increase off-road capability while maintaining precise on-road handling. The 2.5-inch impact-extruded 6061-T6 aluminum body dissipates heat four times faster than conventional steel, ensuring fade-resistant performance during high-speed desert runs or technical crawling. This shock features an Internal Floating Piston (IFP) to separate the high-pressure nitrogen gas from the shock oil, preventing aeration. Additionally, the integrated Hydraulic Top Out (HTO) piston provides a controlled cushion at the end of the extension stroke to eliminate harsh bottoming during aggressive suspension cycling.

• 2.5-inch impact-extruded 6061-T6 aluminum shock body
• Type II clear-anodized plating for superior corrosion resistance
• 5/8-inch hard chrome-plated, heat-treated alloy steel shaft
• Internal Floating Piston (IFP) mono-tube design
• Hydraulic Top Out (HTO) piston technology
• High-flow, velocity-sensitive damping
• Fully rebuildable and re-tunable internals
• Manufacturer Part Number: 987-24-018

Fits 2020-2025 Jeep Gladiator JT models (including Sport, Rubicon, Mojave, Overland, and Willys) equipped with 2-3 inches of rear lift.

The Fox 2.5 Performance Series Smooth Body IFP HTO shock is engineered to enhance the off-road capability and on-road stability of your Gladiator. Featuring a 2.5-inch impact-extruded 6061-T6 aluminum body, this shock dissipates heat four times faster than conventional steel bodies, ensuring consistent damping during aggressive trail use. The Internal Floating Piston (IFP) separates the high-pressure nitrogen gas from the shock oil, eliminating oil aeration and ensuring fade-resistant performance across varied terrain.

This specific HTO (Hydraulic Top Out) model includes a specialized piston to provide a controlled cushion at the end of the extension stroke, preventing harsh topping out during high-articulation maneuvers. Fully rebuildable and re-tunable, these shocks are designed for longevity and performance in the harshest environments.

• Body: 2.5-inch impact extruded and CNC machined 6061-T6 clear-anodized aluminum
• Internal Floating Piston (IFP): Separates oil from high-pressure nitrogen gas
• Hydraulic Top Out (HTO): Integrated piston for controlled extension damping
• Shaft: 5/8-inch hard chrome-plated heat-treated alloy steel
• Valving: Application-specific high-flow velocity-sensitive damping
• Finish: Type II clear-anodized for corrosion resistance
• Manufacturer Part Number: 987-24-017

Fits 2020-2025 Jeep Gladiator JT models (including Sport, Rubicon, Mojave, Overland, and Willys) equipped with a 2-3 inch front suspension lift.

The Fox 2.5 Performance Series Smooth Body IFP HTO shock provides professional-grade damping for the Jeep Gladiator platform. Engineered to maximize off-road capability by extending drop-out travel, these shocks feature Fox's Hydraulic Top Out (HTO) piston to cushion the end of the extension stroke and prevent harsh bottoming. The 2.5-inch impact-extruded 6061-T6 aluminum bodies dissipate heat significantly faster than conventional steel, ensuring consistent, fade-resistant performance on the trail.

Equipped with an Internal Floating Piston (IFP), these shocks isolate the shock oil from the high-pressure, nitrogen-charged gas chamber. This separation eliminates oil aeration, allowing the high-flow velocity-sensitive damping to provide predictable control and reduced vehicle sway. The assembly is built for durability with a 5/8-inch hard chrome-plated shaft and a Type II clear-anodized finish for superior corrosion resistance.

• 2.5-inch impact extruded 6061-T6 aluminum shock body
• Internal Floating Piston (IFP) separates gas and oil to prevent aeration
• Hydraulic Top Out (HTO) piston for controlled extension
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• High-flow velocity-sensitive damping with application-specific tuning
• Type II clear-anodized plating for maximum durability
• Fully rebuildable and re-tunable internal components
• Manufacturer Part Number: 987-24-016

Fits 2018-2025 Jeep Wrangler and Wrangler Unlimited models, including 4xe, Rubicon, Sahara, and Sport trims (V6-3.6L / I4-2.0L / V8-6.4L).

The Fox 2.5 Performance Series Smooth Body IFP HTO shock is engineered to transform your Jeep Wrangler JL’s off-road capability while maintaining composed street manners. Specifically tuned for vehicles with a 3.5 to 4-inch lift, this rear shock provides increased drop-out travel and high-flow, velocity-sensitive damping to reduce vehicle sway and improve control on technical terrain. The 2.5-inch impact-extruded 6061-T6 aluminum body dissipates heat four times faster than conventional steel shocks, ensuring consistent performance without fade during aggressive use.

This shock features an Internal Floating Piston (IFP) that separates the high-pressure nitrogen gas from the oil, preventing aeration and cavitation. The addition of the Hydraulic Top Out (HTO) piston provides a smooth, controlled end-to-travel feel, protecting your suspension during full extension. Fully rebuildable and re-tunable, these shocks are built for a lifetime of service in harsh environments.

• 2.5-inch impact-extruded 6061-T6 aluminum shock body
• Internal Floating Piston (IFP) eliminates oil aeration
• Hydraulic Top Out (HTO) piston for controlled extension
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• Type II clear-anodized finish for superior corrosion resistance
• Application-specific valving for optimized performance
• Manufacturer Part Number: 987-24-015

Fits 2018-2025 Jeep Wrangler JL and Wrangler Unlimited models with 3.5 to 4 inches of front suspension lift.

The Fox 2.5 Performance Series Smooth Body IFP HTO shock is engineered to provide superior damping and heat management for lifted Jeep Wrangler JL applications. Utilizing a 2.5-inch impact-extruded 6061-T6 aluminum body, this shock dissipates heat four times faster than traditional steel-body shocks while remaining highly resistant to corrosion with its Type II clear-anodized finish.

Equipped with an Internal Floating Piston (IFP) to separate the oil from the high-pressure nitrogen charge, this shock eliminates oil aeration for consistent, fade-free performance on the trail. The specialized Hydraulic Top Out (HTO) piston provides a controlled cushion during full suspension extension, preventing harsh mechanical topping and protecting internal components. Every unit is fully rebuildable and re-tunable to suit specific driving needs.

• 2.5-inch impact-extruded 6061-T6 aluminum shock body
• Internal Floating Piston (IFP) separates gas and oil to prevent aeration
• Hydraulic Top Out (HTO) piston provides a controlled end-of-stroke cushion
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• Race-developed high-flow velocity-sensitive damping
• Type II clear-anodized plating for superior corrosion resistance
• Manufacturer Part Number: 987-24-014

Fits 2018-2025 Jeep Wrangler JL and Wrangler Unlimited (Rubicon, Sahara, Sport, Willys, and 4xe models) with a 2-3 inch rear lift.

The Fox 2.5 Performance Series Smooth Body IFP HTO shock is engineered to increase off-road capability by extending drop-out travel while maintaining superior on-road comfort. Unlike standard shocks, the 2.5-inch impact-extruded 6061-T6 aluminum body dissipates heat four times faster than steel, preventing performance fade during aggressive driving. The Internal Floating Piston (IFP) technology separates the shock oil from the high-pressure nitrogen gas, eliminating aeration and ensuring consistent, velocity-sensitive damping.

This application-specific rear shock also features a Hydraulic Top Out (HTO) piston to manage end-of-stroke impact, preventing harsh mechanical bottoming during full suspension extension. The Type II clear-anodized finish and hard chrome-plated 5/8-inch shaft provide excellent corrosion resistance in harsh environments. This shock is fully rebuildable and re-tunable for long-term serviceability.

• 2.5-inch impact extruded 6061-T6 aluminum shock body
• Internal Floating Piston (IFP) design eliminates oil aeration
• Hydraulic Top Out (HTO) piston for controlled extension
• Type II clear-anodized plating for corrosion resistance
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• High-flow velocity-sensitive damping with application-specific valving
• Fully rebuildable and re-tunable components
• Manufacturer Part Number: 987-24-013