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Control front-axle motion while keeping reservoir heat away from the tires
King Shocks 25001-431 is a vehicle-tuned front pair for 4WD Super Duty trucks at stock height or with up to one inch of lift. Updated 2.5-inch bodies, finned reservoirs, and revised reservoir mounts add fluid capacity and tire clearance for sustained on-road and off-road control.
Key Features
- Exact 25001-431 non-adjustable front configuration
- Matched 2.5-inch remote-reservoir pair
- Fits stock height through one inch of front lift
- Updated end caps with high-strength stainless steel mounting pins
- Finned reservoirs and revised mounts for heat control and tire clearance
- Vehicle-specific dynamometer and real-world tuning
- Fully rebuildable, serviceable, and tunable
- Direct bolt-on installation
Fitment
| Years | Make | Model | Drivetrain | Position | Lift Range | Verified Notes |
|---|---|---|---|---|---|---|
| 2005-2026 | Ford | F-250 | 4WD | Front | Stock to 1 inch | Use complete non-adjustable 25001-431 pair |
| 2005-2026 | Ford | F-350 | 4WD | Front | Stock to 1 inch | Use the same complete non-adjustable pair |
| 2005-2026 | Ford | F-450 | 4WD | Front | Stock to 1 inch | Use the same complete non-adjustable pair |
| 2005-2026 | Ford | F-550 | 4WD | Front | Stock to 1 inch | Use the same complete non-adjustable pair |
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | 25001-431 |
| Product Type | Front remote-reservoir shock pair |
| Series | OEM Performance |
| Body Diameter | 2.5 inches |
| Compressed Length | 14.33 inches |
| Extended Length | 22.29 inches |
| Travel | 7.96 inches |
| Position | Front |
| Quantity | Two shocks |
| Compression Adjuster | No |
| Lift Range | Stock to 1 inch |
What's Included
- Two King Shocks 25001-431 front remote-reservoir shocks
- Two vehicle-specific reservoir brackets
- King hardware kit and installation instructions
About King Shocks
King Shocks develops rebuildable off-road dampers using large fluid volumes, precision-machined components, and application-specific testing. OEM Performance shocks combine vehicle-tuned damping with serviceability and external-reservoir heat capacity.
Related Parts
- King rear shocks specified for the same Super Duty ride height
- King steering stabilizer verified for the exact truck configuration
- King service oil, seals, and nitrogen-service parts matched to the exact shock pair
FAQ
What is the 25001-431?It is a matched pair of non-adjustable 2.5-inch front remote-reservoir shocks for supported Ford Super Duty 4WD trucks.
Which trucks are supported?King lists 2005-2026 Ford F-250, F-350, F-450, and F-550 4WD models.
What ride heights are supported?The exact configuration is intended for stock height through approximately one inch of front lift.
How many shocks are included?The package contains two front shocks, two reservoir brackets, and the specified hardware kit.
Are compression adjusters included?No. This exact MPN is the non-adjustable version; the adjustable version is a different part number.
What are the published lengths?Reputable exact-product data lists a 14.33-inch compressed length, 22.29-inch extended length, and 7.96-inch travel.
Are the shocks rebuildable?Yes. King describes them as fully rebuildable, serviceable, and tunable.
Where do they install?They install at the front suspension of supported four-wheel-drive Super Duty trucks.
Installation Instructions
- Confirm the truck year, model, four-wheel-drive system, and installed front ride height before disassembly.
- Park on a level surface, set the parking brake, chock the rear tires, and support the frame and front axle with rated equipment.
- Remove the front wheels and original shocks while keeping the axle supported.
- Install each King shock and its reservoir bracket on the corresponding side without twisting or sharply bending the hose.
- Route both reservoirs clear of tires, steering components, brake hoses, heat, and full suspension travel.
- Torque all hardware to King and Ford service specifications, then cycle steering and suspension through full travel.
- Road-test at low speed and recheck every mount, hose, and fastener after the initial driving interval.
California Proposition 65 Warning: Motor vehicle parts can expose you to chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling and follow applicable safety procedures.
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