Fox 2.5 HTO Performance Series Rear Shock (SINGLE) 0 Inch-1 Inch 99-26 Ford F250/F350 (AX4001) Axiom Supply

Race-Proven Performance. Daily Driver Comfort. Fox direct replacement shocks deliver race-winning performance in a simple direct replacement bolt on shock. Each application has been rigorously tested by Fox’s engineers to maximize suspension travel and performance on and off the road. Direct replacement shocks are available in hundreds of applications from stock to lifted, as well as aftermarket kit replacements.

FOX’s new Hydraulic Top Out (HTO) technology offers usable position-sensitive rebound damping control on and off the pavement. HTO reduces harsh top-outs and increases comfort by forcing shock oil through a secondary shim stack to slow down shock shaft speed; HTO is particularly beneficial after installing heavier, aggressive tires and applications lifted higher than OEM specification.

This single rear shock assembly fits the 1999-2026 Ford Super Duty F250/F350 Truck for stock height up to a 1 inch rear block, or rear airbag kit.

Features:

• Designed as a direct replacement front shock for stock or leveled suspension setups
• Compatible with most leveling kits and factory suspension
• Collapsed Length: 18.79 inch
• Extended Length: 29.58 inch

Includes:

• (1) Single Rear HTO Shock AX4001 Fox Shock 987-24-001

Specifications:

• 2.5 inch Impact extruded 6061-T6 aluminum shock body
• Type II clear-anodized body plating
• High-flow velocity-sensitive damping
• 5/8 inch hard chrome shaft
• Internal floating piston (IFP)
• Hydraulic Top Out (HTO) piston

The Axiom No-Nonsense Lifetime Warranty

Our suspension and steering components are warrantied for life to the original purchaser against any manufacturer defects, premature wear, or breakage. Push it to the limit-we don’t care. If the part lets you down, we will make it up to you!

Details:

• Material: Aluminum
• Finish: Anodized
• Series: HTO Performance
• Warranty: Limited Lifetime Warranty

✅ Vehicle Compatibility

• 1999 – 2026 Ford F-350 Super Duty XLT
• 1999 – 2026 Ford F-250 Super Duty Lariat
• 1999 – 2026 Ford F-250 Super Duty XLT
• 1999 – 2026 Ford F-350 Super Duty XL
• 1999 – 2026 Ford F-250 Super Duty XL
• 1999 – 2026 Ford F-350 Super Duty Lariat
• 2003 – 2026 Ford F-350 Super Duty King Ranch
• 2004 – 2026 Ford F-250 Super Duty King Ranch
• 2004 – 2010 Ford F-350 Super Duty Harley-Davidson Edition
• 2004 – 2010 Ford F-250 Super Duty Harley-Davidson Edition
• 2008 – 2009 Ford F-350 Super Duty FX4
• 2008 – 2009 Ford F-250 Super Duty FX4
• 2009 – 2010 Ford F-350 Super Duty Cabela’s
• 2009 – 2010 Ford F-250 Super Duty Cabela’s
• 2013 – 2026 Ford F-250 Super Duty Platinum
• 2013 – 2026 Ford F-350 Super Duty Platinum
• 2018 – 2024 Ford F-250 Super Duty Limited
• 2018 – 2024 Ford F-350 Super Duty Limited