Jerr-Dan Dual-Angle Rollback Deck (Shark Design): What It Is & Why It Matters

What Is a Dual-Angle Rollback Deck?

The dual-angle rollback deck, often referred to as a “shark” design, is one of the most important advancements in modern carrier tow trucks.

Unlike a traditional flatbed that tilts in a single straight plane, a dual-angle deck features a two-stage loading surface:

• A primary deck angle
• A secondary angled section at the rear

This design significantly improves how vehicles transition from the ground onto the deck—especially vehicles with low ground clearance.

Why the Dual-Angle Design Was Developed

As vehicle design evolved, low-profile cars became more common. Sports cars, luxury vehicles, and other low-slung designs created a major challenge for towing operators.

With standard flatbed carriers:

• Approach angles were too steep
• Vehicles were prone to scraping
• Operators often had to use wooden ramps or improvised solutions

To solve this problem, Jerr-Dan introduced the dual-angle rollback deck in 1992, designing and patenting a system that allowed operators to load low-clearance vehicles without the need for homemade ramps.

How the Dual-Angle (“Shark”) Deck Works

Two-Stage Loading Geometry

The defining feature of the shark-style deck is its compound angle:

• The main deck provides structural support and carrying surface
• The rear angled section reduces the initial loading angle

This creates a smoother, more gradual transition during loading.

Lower Approach Angle

By incorporating a second angle at the rear, the deck:

• Reduces the effective loading angle
• Allows vehicles to climb onto the deck more gradually
• Minimizes front-end and undercarriage contact

Improved Breakover Clearance

The transition point between ground and deck is one of the most critical moments during loading.

A dual-angle design:

• Reduces the risk of high-centering
• Improves clearance for longer wheelbase vehicles
• Provides a smoother path for damaged or immobile vehicles

Key Benefits of Jerr-Dan Dual-Angle Rollback Decks

1. Safe Loading for Low-Clearance Vehicles

Dual-angle decks are ideal for:

• Sports cars
• Luxury and exotic vehicles
• Electric vehicles (EVs)
• Lowered or modified vehicles

➡️ Significantly reduces the risk of scraping bumpers, spoilers, and undercarriages

2. Eliminates the Need for Ramps

One of the biggest operational advantages:

• No wooden planks or add-on ramps
• Faster, simpler loading process
• More professional presentation on every job

3. Increased Efficiency on the Job

With fewer setup steps required, operators can:

• Load vehicles faster
• Reduce repositioning time
• Complete more jobs per day

4. Greater Versatility

A dual-angle rollback expands what a single truck can handle:

• Standard passenger vehicles
• Low-profile specialty vehicles
• Accident recoveries
• Fleet and dealership transport

➡️ One truck, more capabilities

5. Reduced Stress on Equipment

The smoother loading angle:

• Improves winch alignment
• Reduces strain on cables and components
• Creates a more controlled loading process

6. Lower Risk of Damage Claims

Because vehicles load more cleanly:

• Less contact with the deck
• Fewer scraping incidents
• Reduced liability for operators

Real-World Applications

Dual-angle (“shark”) rollback decks are especially valuable in:

• Exotic and luxury vehicle transport
• EV towing and transport
• Accident recovery situations
• Tight or steep loading environments
• Dealership and fleet logistics

Dual Angle vs. Standard Rollback

Why Jerr-Dan’s Dual-Angle Design Still Matters

While dual-angle concepts are more common today, Jerr-Dan was the first to introduce and patent this design.

Their continued focus on Deck geometry, Structural integration, Real-world usability has made the dual-angle rollback a standard expectation for high-quality carrier trucks.

Bottom Line

The Jerr-Dan dual-angle rollback deck, often called a “shark” design, is a proven solution to one of the biggest challenges in towing: safely loading low-clearance vehicles.

It delivers:

• Safer loading
• Faster operation
• Greater versatility
• Reduced risk of damage

For many operators, it’s not just an upgrade—it’s an essential feature.

Arizona Jerr-Dan Dealer

Midco Sales is the Jerr-Dan tow truck dealer in Arizona.  Contact our sales office at (480) 999-0607 for more information on dual-angle rollbacks.