Zone Offroad 7-Inch Lift Kit | Fox 2.0 Adventure Series Shocks | 7" Front / 4.5" Rear | Power Stroke Diesel · SRW Only | 37" Tire Clearance | 2023–2026 Ford F-250 / F-350 Super Duty 4WD | SKU: ZONF140F

⚠️ DIESEL ENGINE ONLY: This kit is Power Stroke diesel only. Gas engine owners — see ZONF128F (Fox) or ZONF128N (Nitro).

⚠️ 406 FT-LB TORQUE REQUIREMENT: A torque wrench capable of 406 ft-lbs is required for installation.

⚠️ FRONT EXHAUST MODIFICATION MAY BE REQUIRED to clear the front driveshaft — confirm with your installer before scheduling.

Verified Fitment

Does NOT fit:

• Ford F-250 / F-350 Super Duty with gas engine (6.8L V8 / 7.3L V8) — gas engine owners order ZONF128F (Fox) or ZONF128N (Nitro)
• Ford F-350 / F-450 DRW (dual rear wheel / dually) — separate Zone DRW diesel kit required
• 2022 and earlier Super Duty — different suspension generation
• 2WD Super Duty — 4WD only
• Ford F-450 / F-550 — not confirmed for this kit

Tremor note: Tremor-equipped Super Duty trucks have a taller factory ride height. After installing this kit, the final ride height will match a standard model's lifted height — not 7 inches above the Tremor's taller factory baseline.

2024+ model-specific requirements:

• Ball joint cams included for 2024+ Super Duty. Trucks with a non-selectable passenger-side hub-lock must replace it with Ford OEM part PC3Z-3B396-A before installation.
• Vacuum lines 3C125-A and/or 3C124 may be needed.

2023+ advisory requirements:

• Load Scales / Ride Height Sensors: ZONF5502 required — sold separately.
• ADAS recalibration required at Ford dealership or certified ADAS service center.
• Ford Safety Recall 23S49: Complete before installation on 2023 model year trucks.

Component Specifications

Why diesel-specific springs: The Power Stroke diesel engine is significantly heavier at the front than the 6.8L or 7.3L gas V8. Full-length coil springs in the ZONF140F are rate-engineered specifically for diesel front-end weight. Installing gas-rate springs on a diesel truck produces incorrect ride height and suspension geometry under the heavier powertrain weight. The ZONF140F's diesel-specific spring rate ensures correct geometry and ride height on the Power Stroke platform.

406 ft-lb torque requirement: This specification is called out explicitly by Zone Offroad. Standard 1/2" drive torque wrenches typically max out at 150–250 ft-lbs. A 3/4" or 1" drive torque wrench capable of 406 ft-lbs is required for specific fasteners in this installation. Confirm your installer has this equipment before scheduling.

What Is and Is NOT Included

Fox 2.0 Adventure Series shock specs:

• 2-inch diameter steel body construction
• Internal floating piston (IFP) monotube design — separates oil from nitrogen gas for fade-free performance
• Large 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• Race-developed high-flow piston design
• Application-specific valving for this diesel Super Duty lift application
• Long-lasting silver coated finish

Factory Protection Plus warranty included. Zone's Limited Lifetime Warranty + ESC compatibility + 5-year / 60,000-mile drivetrain warranty. Register after installation.

Critical Compatibility

Diesel-only is the primary fitment gate. This kit uses full-length coil springs rate-engineered for the Power Stroke diesel's front-end weight. Installing diesel-rate springs on a gas Super Duty produces an over-sprung front end sitting above the specified lift height. Gas engine owners order ZONF128F or ZONF128N.

406 ft-lb torque requirement eliminates DIY on standard tools. Zone's explicit callout of 406 ft-lbs means this installation requires a heavy-duty torque wrench that most home garages don't stock. This is a professional installation — a shop with the correct tool set is mandatory.

Front exhaust modification. The diesel Super Duty's front exhaust routing can conflict with the front driveshaft at 7 inches of lift. Zone's installation notes explicitly flag this as a potential requirement. Confirm with your installer before the installation appointment — plan for the modification cost if applicable.

Larger tires on stock wheels not recommended. Zone's own product notes state: "Larger tires on stock wheel are not recommended due to interference with brake line, radius arm and sway bar." Use the recommended wheel and backspacing specs (18" x 9 at 4.5" backspace or 20" x 9 at 4.5" backspace).

Installation Notes

Skill level: Advanced — professional installation required. Heavy-duty torque requirements, potential front exhaust modification, and all standard 7-inch full suspension replacement scope.

Full 4-wheel alignment mandatory after installation.

406 ft-lb torque requirement: Confirm your installation shop has a torque wrench capable of 406 ft-lbs before scheduling. This exceeds the range of standard 1/2" drive torque wrenches.

Front exhaust: Zone's installation notes flag potential exhaust modification required to clear the front driveshaft on the diesel platform. Discuss with your installer before the appointment — budget for this modification if applicable.

ADAS recalibration: Required after installation. Schedule at a Ford dealership or certified ADAS service center. Plan for this alongside the installation appointment — not a skip-optional step.

2024+ pre-installation checklist:

• Hub-lock type confirmed (selectable vs. non-selectable)
• If non-selectable: PC3Z-3B396-A sourced before installation
• Vacuum lines confirmed if needed

2023 model year:

• Ford Recall 23S49 completed — confirm by VIN with dealer

Load sensor:

• Presence of Load Scales / Ride Height Sensors confirmed
• If yes: ZONF5502 on hand

2-piece rear driveshaft: Add carrier bearing drop kit if applicable.

Re-torque: All suspension fasteners after 500 miles of break-in driving.

LTL freight. Residential delivery included — freight carrier will contact you to schedule a delivery window. Inspect for damage before signing.

Common Questions

What's the difference between ZONF140F and ZONF128F?
Engine-specific spring rates only. Both are Zone Offroad 7-inch Fox 2.0 Adventure Series radius arm bracket kits for the 2023–2026 SRW Super Duty. ZONF140F uses full-length coil springs rate-engineered for the Power Stroke diesel's heavier front-end weight. ZONF128F uses gas-specific spring rates for the 6.8L or 7.3L V8. Installing the wrong spring rate for your engine produces incorrect ride height and suspension geometry. Confirm your engine before ordering.

What's the difference between ZONF140F and ZONF140N?
Shocks only. ZONF140F includes Fox 2.0 Adventure Series IFP monotube shocks with application-specific valving. ZONF140N includes Zone Nitro twin-tube gas shocks. Same diesel-specific springs, same radius arm bracket geometry, same forged pitman arm, same 4.5-inch rear block.

Why does this kit require a 406 ft-lb torque wrench?
Zone's installation documentation explicitly calls out 406 ft-lbs as the required torque spec for specific fasteners in this installation — likely the radius arm bracket or axle U-bolt torque requirements on the heavy-duty diesel Super Duty platform. Standard 1/2" drive torque wrenches typically don't reach this range. A 3/4" or 1" drive capable wrench is required. Confirm with your installer.

My F-350 is a DRW (dually) — does this fit?
No. Zone's confirmed fitment for ZONF140F is SRW (single rear wheel) models only. The DRW F-350 requires a separate Zone DRW-specific diesel kit.

Does my 2023+ Super Duty need ADAS recalibration?
Yes — all 2023+ Super Duty trucks. The lift height change moves the factory ADAS camera and sensor calibration angles outside their designed range. Recalibration must be performed at a Ford dealership or certified ADAS service center.

The Obsidian Take

The ZONF140F is Zone's maximum-height solution for the 2023–2026 Power Stroke diesel SRW Super Duty — the same reinforced radius arm bracket system and Fox 2.0 IFP shock package as the gas equivalent, with diesel-specific full-length coil springs that account for the significantly heavier Power Stroke front-end weight.

The spring rate distinction between diesel and gas kits isn't a minor calibration difference — the Power Stroke is substantially heavier at the front axle. Gas-rate springs installed on a diesel truck will sit noticeably higher than the specified lift height with the front end over-sprung. Diesel-rate springs produce the correct 7-inch geometry. This is why Zone builds separate products for each powertrain.

The 406 ft-lb torque requirement and potential front exhaust modification are the two installation planning items that separate this installation from standard Super Duty lift work. Both require confirmation before scheduling — the torque spec determines whether a shop has the right tool, and the exhaust conflict determines whether there's additional fabrication cost. Neither is unusual for a 7-inch diesel Super Duty build, but both need to be on the planning list before installation day.

For a 2023–2026 Power Stroke SRW Super Duty owner who wants the maximum 7-inch lift with the full geometry correction package, Fox 2.0 IFP shocks, and 37-inch tire clearance — ZONF140F is the complete, single-order solution.

This SKU is for: 2023–2026 Ford F-250 / F-350 Super Duty 4WD SRW owners with the Power Stroke diesel engine who want 7-inch front / 4.5-inch rear lift with Fox 2.0 IFP shocks, have confirmed diesel engine, SRW configuration, all 2024+ hub-lock requirements, Load Scales sensor status, 406 ft-lb torque capability at the install shop, and have planned for potential front exhaust modification and post-installation ADAS recalibration.

This SKU is NOT for: Gas engine Super Duty owners (order ZONF128F or ZONF128N), DRW owners (separate DRW diesel kit), 2022 and earlier Super Duty owners, 2WD owners, Tremor owners expecting 7 inches net over Tremor factory height, anyone whose installer lacks 406 ft-lb torque capability, or anyone wanting Nitro shocks (order ZONF140N).

Manufacturer Data Disclaimer
Product specifications, fitment data, and feature details are sourced from Zone Offroad manufacturer documentation and verified third-party technical references current at the time of publication. Zone Offroad reserves the right to modify product specifications without notice. Confirm Power Stroke diesel engine, SRW configuration, model year, Load Scales sensor status, 2024+ hub-lock type, Ford Recall 23S49 status, installer torque capability, and front exhaust clearance before ordering. OFAS is not responsible for incompatibility resulting from gas engine misidentification, DRW configuration, generation misidentification, or failure to address 2024+ hub-lock requirements or ADAS recalibration.

Prop 65 Warning
⚠ WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

Non-Returnable Notice
This item is non-returnable once installed. Verify Power Stroke diesel engine, SRW configuration, model year, and all conditional requirements before accepting delivery. Questions before ordering? Text (469) 407-7538.