Fox 2.5 HTO Performance Series Rear Shock (SINGLE) 0"-1" 1999-2026 Ford F250/F350 (AX4001)

Fitment

This single rear shock assembly fits the 1999-2026 Ford Super Duty F250 / F350 Truck for stock height up to a 1" 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"

Extended Length: 29.58"

Description

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.

Includes

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

Specifications

2.5” Impact extruded 6061-T6 aluminum shock body

Type II clear-anodized body plating

High-flow velocity-sensitive damping

5/8” 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!