Zone Offroad 7-Inch Radius Arm Lift Kit | Fox 2.0 Shocks | F-250/F-350 4WD Gas | 2023-2026

Zone Offroad 7-Inch Front / 4.5-Inch Rear Radius Arm Lift Kit | Fox 2.0 Shocks | 2023–2026 Ford F-250 / F-350 Super Duty 4WD Gas | SKU: F128F

Is This for You?

This kit is for the 2023–2026 Ford F-250 or F-350 Super Duty 4WD owner with a gas engine who wants maximum lift — 7 inches of front lift and 4.5 inches of rear lift — with Fox 2.0 shocks included. This is the top-of-lineup Zone Offroad radius arm kit for the 2023–2026 Super Duty Gas platform. If your Super Duty has a 6.7L Power Stroke diesel, this kit will not fit. If your truck is 2WD, this kit will not fit. If you want moderate lift (5 inches), see F125 (2-leaf) or F126 (3-leaf).

The Result

The Zone Offroad F128F delivers 7 inches of front lift and 4.5 inches of rear lift on the 2023–2026 Super Duty solid front axle platform. At 7 inches of front lift, factory radius arms create severe caster misalignment that cannot be corrected with spacers alone — Zone Offroad heavy-duty replacement radius arms are longer and angled to re-establish proper caster geometry at full lift height. Reinforced front crossmembers maintain structural rigidity. Front coil spacers and bump stop extensions complete the front lift. Fox 2.0 shocks are included front and rear, valved for the lifted Super Duty geometry. A 4.5-inch rear block spacer provides rear lift on the leaf-spring rear suspension.

Verified Fitment (OFAS Standard)

• 2023–2026 Ford F-250 4WD SRW — Gas Engine ✓
• 2023–2026 Ford F-350 4WD SRW — Gas Engine ✓
• Does NOT fit: Diesel-equipped F-250/F-350 — 6.7L Power Stroke or any other diesel configuration
• Does NOT fit: 2WD / RWD F-250 or F-350
• Does NOT fit: 2022 or earlier Ford Super Duty — different generation platform
• Does NOT fit: Ford F-350 DRW (Dually) — confirm separately
• Does NOT fit: Ford F-150 — incompatible platform

Radius Arm System — Why Radius Arms Are Required at 7 Inches

• The 2023–2026 F-250/F-350 Super Duty 4WD uses a radius arm front suspension with a solid front axle.
• At 7 inches of front lift, factory radius arms create severe caster misalignment that cannot be corrected with crossmembers or spacers alone — degrading steering precision and on-road stability to an unsafe degree.
• Zone Offroad heavy-duty replacement radius arms are longer and angled to re-establish proper caster geometry at 7 inches of lift. Radius arm replacement is mandatory at this lift height — this is not a spacer-only kit.

4.5-Inch Rear Block — Axle Wrap Note

• At 4.5 inches of rear block height, axle wrap risk under hard acceleration or heavy towing increases compared to lower block heights.
• Confirm with your installer whether an add-a-leaf is recommended for your towing or payload application before installation.

Zone Offroad 2023–2026 Super Duty Gas Radius Arm Kit Selection

• F125: 5" front / 3" rear | Fox 2.0 shocks | 2-leaf main spring pack | 2023–2026
• F126: 5" front / 3" rear | Fox 2.0 shocks | 3-leaf main spring pack | 2023–2026
• F128F (this listing): 7" front / 4.5" rear | Fox 2.0 shocks | Maximum lift | 2023–2026

System Specifications

• SKU / Part Number: F128F
• Brand: Zone Offroad
• Front Lift: 7 inches
• Rear Lift: 4.5 inches (block spacer — leaf-spring rear suspension)
• Suspension Type: Radius arm front suspension (solid front axle)
• Shock Type: Fox 2.0 — front and rear, included
• Engine: Gas only — does NOT fit diesel
• Drivetrain: 4WD only
• Application: 2023–2026 Ford F-250 / F-350 Super Duty 4WD Gas SRW
• Shipping Weight: 262 lbs

Kit Contents

• Heavy-duty radius arms (corrected caster geometry)
• Reinforced front crossmembers
• Front coil spacers
• Bump stop extensions
• 4.5-inch rear block spacer
• Fox 2.0 shocks — front and rear
• All required hardware

Installation Notes

• Professional installation required. Radius arm replacement on a solid front axle requires proper axle positioning, caster verification, and torque sequencing.
• Full 4-wheel alignment mandatory post-installation. Budget for alignment at time of install.
• Torque all fasteners to Zone Offroad specification included with the kit. Do not estimate torque on radius arm, crossmember, or steering fasteners.
• Verify tire and wheel clearance with your specific offset and tire combination before ordering.
• Confirm with installer whether an add-a-leaf is recommended for your towing or payload use at 4.5-inch block height.
• Re-torque all suspension fasteners after 500 miles of break-in.

⚠️ LTL Freight Notice: This item ships via freight carrier due to size and weight. Residential delivery is included. Freight carrier will contact you to schedule.

Engineering Question: Have you confirmed your F-250/F-350 is a 2023–2026 4WD Gas model? Diesel owners — this kit does not fit. 2WD owners — this kit does not fit. Want moderate lift instead of maximum? See F125 (2-leaf) or F126 (3-leaf) for the 5-inch/3-inch kits.