Zone Offroad 2-Inch Torsion Key Leveling Kit | 1997-2003 Ford F-150 4WD

Zone Offroad 2-Inch Torsion Key Leveling Kit | 1997–2003 Ford F-150 4WD | SKU: F78

Is This for You?

This kit is for the 1997–2003 Ford F-150 4WD owner who wants to eliminate the factory nose-down rake and level the truck front-to-rear with a 2-inch front lift. The 1997–2003 F-150 4WD uses a torsion bar front suspension — forged replacement torsion keys recalibrate the torsion bar indexing for a controlled 2-inch front lift without spacers, shock replacement, or geometry modification. If your F-150 is 2WD, this kit will not fit — the 2WD uses a twin I-beam front suspension, not torsion bars. If your F-150 is a 2004 or newer model, this kit will not fit — the 2004+ F-150 uses a coil-over strut front suspension.

The Result

The Zone Offroad F78 raises the front of the 1997–2003 F-150 4WD by 2 inches via forged replacement torsion keys that index the torsion bar at a higher preload position than the factory keys. The rear height is unchanged. The result is a level stance front-to-rear, eliminating the factory nose-down rake. Direct bolt-on installation — no cutting, welding, or suspension modification required beyond torsion key replacement and adjuster bolt calibration.

Verified Fitment (OFAS Standard)

• 1997–2003 Ford F-150 4WD — Torsion Bar Front Suspension ✓
• Does NOT fit: 1997–2003 Ford F-150 2WD — twin I-beam front suspension, not torsion bar
• Does NOT fit: 2004 or newer Ford F-150 — coil-over strut front suspension, different leveling method required
• Does NOT fit: Ford F-250 or F-350 — incompatible platform

Torsion Key Leveling — How It Works

• The 1997–2003 F-150 4WD uses torsion bars as the front spring medium. Factory torsion keys index the torsion bar at a preload position that creates a slight nose-down rake from the factory.
• Zone Offroad forged replacement keys index the torsion bar at a higher preload position — raising the front 2 inches without adding spacers, replacing shocks, or modifying suspension geometry.
• After key installation, the torsion bar adjuster bolt is calibrated to achieve the desired 2-inch lift per Zone Offroad instructions included with the kit.

Leveling Kit vs. Lift Kit

• Leveling kit (F78, this listing): Front +2 inches only — rear unchanged — truck sits level — bolt-on torsion key replacement
• Lift kit: Raises the entire vehicle front and rear — significantly higher price point and complexity

System Specifications

• SKU / Part Number: F78
• Brand: Zone Offroad
• Lift Height: 2 inches (front only)
• Lift Method: Forged torsion key replacement
• Suspension Type: Torsion bar front suspension — 4WD only
• Drivetrain: 4WD only — does NOT fit 2WD
• Application: 1997–2003 Ford F-150 4WD
• Shipping Weight: 8 lbs

Kit Contents

• Forged replacement torsion keys (pair)
• All required hardware

Installation Notes

• Professional installation recommended. Torsion key replacement requires proper torsion bar unloading and torque sequencing.
• Front alignment recommended post-installation to verify caster and camber are within spec at the new ride height.
• After key installation, calibrate the torsion bar adjuster bolt per Zone Offroad instructions to achieve the desired 2-inch lift.
• Verify tire and wheel clearance with your specific offset and tire combination after installation.

Engineering Question: Have you confirmed your F-150 is a 1997–2003 4WD model with torsion bar front suspension? 2WD owners — twin I-beam suspension, this kit does not apply. 2004 or newer F-150 owners — coil-over strut suspension, a different leveling method is required.