2017–2026 Ford F-250/F-350 Super Duty Rear Fox Performance Series 2.5 HTO Shocks (6–8” Lift)

Upgrade your ride quality and off-road performance with the Fox Performance Series 2.5 HTO Shocks. Designed as a direct bolt-on upgrade, these shocks feature position-sensitive damping technology, vehicle-specific valving, and larger pistons to deliver improved control both on and off the road. The 2.5-inch Type II anodized aluminum body efficiently dissipates heat while resisting corrosion, and an internal floating piston (IFP) separates shock oil from high-pressure nitrogen for consistent, fade-resistant performance. Hydraulic Top-Out (HTO) technology adds position-sensitive rebound control by routing oil through a secondary shim stack, reducing harsh top-outs and slowing shaft speed for a smoother ride—especially beneficial for vehicles running heavier tires or lifts beyond factory specifications.

Key Features

2.5" Impact-Extruded 6061-T6 Aluminum Body – Increased oil capacity for better heat dissipation and damping performance
Type II Clear Anodized Finish – Corrosion-resistant coating for long-term durability
High-Flow Velocity-Sensitive Damping – Adjusts to terrain for improved ride quality and control
5/8" Hard Chrome Shaft – Strength and durability under demanding conditions
Internal Floating Piston (IFP) – Separates oil and nitrogen to maintain consistent damping
Hydraulic Top-Out (HTO) Piston – Reduces harsh rebound and improves ride comfort
Eyelet Mounting (Top & Bottom) – Standardized mounting for easy installation
Extended Length: 35.88"
Compressed Length: 22.19"
Travel: 13.69"
Designed for 6–8" Lifted Applications

Performance Benefits

The Fox 2.5 HTO shocks provide increased damping control and improved ride quality compared to factory shocks. With position-sensitive rebound control, these shocks help smooth out rough terrain, reduce top-out harshness, and maintain stability under demanding conditions. Ideal for lifted trucks and vehicles running larger, heavier tires.

Installation

• Installation Time: 1–2 Hours
• Difficulty Level: Easy to Moderate
• Tools Required: Basic hand tools
• Installation Type: Bolt-on replacement

Fitment

2017–2026 Ford F-250 Super Duty (4WD) – Rear – 6–8" Lift
Fits XL, XLT, Lariat, King Ranch, and Platinum models

2025 Ford F-250 Super Duty – Rear – 6–8" Lift
Fits King Ranch, Lariat, Platinum, and XLT models

2017–2026 Ford F-350 Super Duty (4WD) – Rear – 6–8" Lift
Fits XL, XLT, Lariat, King Ranch, and Platinum models

2018–2024 Ford F-350 Super Duty Limited – Rear – 6–8" Lift

2023–2026 Ford F-350 Super Duty King Ranch – Rear – 6–8" Lift

2023–2026 Ford F-350 Super Duty Platinum – Rear – 6–8" Lift

Notes

• No additional hardware required (reuses factory mounting points unless otherwise specified)