4x4 Super Single Conversions

28 years of hands-on experience and thousands of successful conversions. Durable, custom-built truck conversions engineered for extreme conditions.

Core Package

Stage 1 Conversion Package

Everything you need to transform your medium-duty truck into a capable off-road machine.

Tires & Wheels

  • Continental 335/80 R20 (7,400 lbs) or 365/80 R20 (7,600 lbs)
  • Goodyear 335/80 R20 (6,395 lbs) or 365/80 R20 (8,270 lbs)
  • 20x10 forged aluminum wheels (3-piece, 2-piece, or 1-piece)

Suspension & Performance

  • 2.5" lift kit
  • Custom Fox military shocks (monobody, bypass, or 23-way adjustable nitrogen)
  • Speed correction calibration

Gearing

  • 6:17 ratio for heavy haul applications (Ford only)
  • Recommended for loads exceeding 14,000 lbs on chassis

Fenders

  • Multiple generational styles (Gen 1, 2, 3) with 11 styles available
  • Compatible with 2017-2025 Ford, Chevy 4500/5500/6500, Dodge 4500/5500
Optional Upgrades

Take It Further

Customize your conversion with performance upgrades built for the most demanding applications.

Axles & Braking

  • Pro 80 front axle — 11,000 lbs capacity (Ford only)
  • Severe duty brakes — 18% improved stopping power
  • Electric lockers (35-spline factory or 40-spline Pro 80)
  • Custom DD-rated compound pads, cross-drilled & slotted rotors

Tire Management (CTIS)

  • Central Tire Inflation System with custom axles
  • Adjustable via digital dash controller
  • 1-year, 12,000-mile warranty on CTIS systems

Recovery & Towing

  • Warn severe duty synthetic winch (12k or 16.5k capacity)
  • Rear winch hitch — 30,000 lbs towing at 3" receiver
  • Severe duty bumpers (BodyGuard or Gridiron)

Cosmetic & Protection

  • Forged aluminum internal double beadlocks
  • Dual fuel tank options (Titan Tanks)
  • Wheel spacers for military axle appearance

F-650 / F-750 Development

  • 14,000 lbs capacity with 40-spline shafts/lockouts
  • CTIS available
  • Full load, torque, and application testing

Forged Aluminum Wheels

  • 1-piece forged aluminum wheels (8,000 lbs capacity)
  • New plastic molded fenders (manufactured in Fort Worth)
  • Dana 300/315 electric lockers
  • Ford CPU integration for CTIS
Our Process

How It Works

From initial quote to delivery, we keep it straightforward.

1

Get a Quote

Submit your project details and we'll provide a detailed estimate.

2

Design & Plan

We work with you to finalize specs and build plan.

3

Fabrication

Our team builds and installs your conversion in-house.

4

Testing & QC

Every conversion undergoes thorough inspection and testing.

5

Delivery

We deliver your truck with full follow-up support.

Why DBL Design

Built on Experience, Not Hype

We don't oversell unnecessary components. We build conversions based on your specific application — whether it's heavy haul, off-road, or severe duty work. Direct communication, long-term satisfaction, and honest recommendations are what set us apart.

28+

Years of Experience

2,800+

Trucks Converted

Nationwide

Parts Shipping & Dealer Network

Ready to Start Your Conversion?

Contact us today for a custom quote on your super single conversion project.