Zone Offroad 2.5-Inch Leaf Spring Leveling Kit | 5-Leaf Mini-Pack | F-250/F-350 4WD | 1999-2004

Zone Offroad 2.5-Inch Leaf Spring Leveling Kit | 5-Leaf Mini-Pack | 1999–2004 Ford F-250 / F-350 Super Duty 4WD | SKU: F4

Is This for You?

This kit is for the 1999–2004 Ford F-250 or F-350 Super Duty 4WD owner who wants to eliminate the factory nose-down rake and level the truck front-to-rear with a 2.5-inch front lift, while also improving front ride quality and increasing front load support. The 1999–2004 Super Duty 4WD uses a leaf-spring front suspension — this kit replaces the factory front leaf spring pack with a 5-leaf progressive-rate mini-pack. This is a full spring replacement, not a spacer. If your Super Duty is 2WD, this kit will not fit. If your Super Duty is a 2005 or newer model, this kit will not fit — different platform.

The Result

The Zone Offroad F4 raises the front of the 1999–2004 F-250/F-350 4WD by 2.5 inches via a 5-leaf progressive-rate mini-pack that replaces the factory front leaf spring pack. The rear height is unchanged. The result is a level stance front-to-rear, eliminating the factory nose-down rake. The progressive spring rate provides softer initial compliance for small-bump ride quality while stiffening progressively under load — improving front-end height retention under accessories, plows, or heavy equipment compared to the factory pack.

Verified Fitment (OFAS Standard)

• 1999–2004 Ford F-250 4WD SRW ✓
• 1999–2004 Ford F-350 4WD SRW ✓
• Does NOT fit: 2005 or newer Ford F-250/F-350 Super Duty — different platform, different front suspension architecture
• Does NOT fit: 2WD / RWD F-250 or F-350
• Does NOT fit: Ford F-350 DRW (Dually) — confirm separately
• Does NOT fit: Ford F-150 — incompatible platform
• Does NOT fit: 1998 or earlier Ford F-250/F-350 — P221 Super Duty launched 1999

5-Leaf Mini-Pack — How It Works

• The 1999–2004 F-250/F-350 Super Duty 4WD uses a leaf-spring front suspension.
• The Zone Offroad 5-leaf progressive-rate mini-pack replaces the factory front leaf spring pack entirely — this is not a spacer or add-a-leaf.
• Progressive spring rate: Softer initial rate for improved small-bump compliance — stiffens progressively under load to maintain height and control.
• 5-leaf design: More leaves than the factory pack — increased load support reduces front-end sag under accessories, plows, or heavy equipment.

Leveling Kit vs. Lift Kit

• Leveling kit (F4, this listing): Front +2.5 inches only — rear unchanged — truck sits level — full front spring replacement
• Lift kit: Raises the entire vehicle front and rear — significantly higher price point and complexity

System Specifications

• SKU / Part Number: F4
• Brand: Zone Offroad
• Lift Height: 2.5 inches (front only)
• Lift Method: 5-leaf progressive-rate mini-pack (full front spring replacement)
• Spring Rate: Progressive
• Drivetrain: 4WD only — does NOT fit 2WD
• Application: 1999–2004 Ford F-250 / F-350 Super Duty 4WD SRW
• Shipping Weight: 81 lbs

Kit Contents

• 5-leaf progressive-rate front mini-pack (replaces factory front leaf spring pack)
• All required hardware

Installation Notes

• Professional installation recommended. Full front leaf spring replacement requires proper spring eye and U-bolt torque sequencing.
• Front alignment recommended post-installation to verify caster and camber are within spec at the new ride height.
• Torque all U-bolt and spring eye fasteners to Zone Offroad specification included with the kit.
• Verify tire and wheel clearance with your specific offset and tire combination after installation.

Engineering Question: Have you confirmed your F-250/F-350 is a 1999–2004 4WD model? 2005 or newer Super Duty owners — different platform, different leveling method required. 2WD owners — this kit does not apply. DRW/Dually owners — confirm compatibility before ordering.