Workhorse Dual Tandem Gooseneck Dump Trailer

Model: WDT

Crafted using Diamond C’s exclusive ENGINEERED BEAM TECHNOLOGY, the WDT has the best power to weight ratio in its class and is ready to take on the toughest of jobs.

Build Your Own Trailer

At a Glance

GVWR: 25,000 – 30,000 lb
LENGTHS: 16′- 20′
PULL TYPE: Gooseneck
AXLES: 2 – 10,000 lb Lippert Axles
(Upgrade to 2 – 12K or 2 – 16K)

Diamond C WDT Dump Trailer

Engineered Beam Technology

We design, engineer, and build our own I-Beams. Our U.S. Patent Protected Engineered Beam design allows for the tallest and strongest beams in the industry, with the best strength-to-weight ratios on the road.

Lighter, stronger, and engineered to deliver!


Find a Dealer Map

How Do I Order a WDT?

Great question! Keep scrolling to customize and build your WDT dump trailer to your liking with our interactive build-your-own trailer configurator, then you will be prompted to submit your trailer build to your nearest Diamond C dealer for quote and availability. We have an extensive dealer network of almost 200 dealers strategically placed throughout North America.

Popular Upgrades

13HP Honda Gas Power Unit, Electric Start, with 8

Gas Powered Telescopic Package

For almost unlimited dumping leverage and power, add our premium 13HP Honda Gas Power Unit. Includes an electric start and a massive 8″ Bore TELESCOPIC Lift Cylinder.

12,000 lb Hydraulic Jacks

Dual 12,000 lb Hydraulic Jacks

A must have for anyone who hooks and unhooks their trailer often! Get 24,000 lb of combined lift power in mere seconds. Fast, convenient, and strong. Find out more HERE.

Quality Trailers Since 1985

Diamond C has been an industry leader for over 35 years since our humble beginnings over 3 decades ago. We strive to be on the forefront of trailer manufacturing by continuously demonstrating excellent quality and value, cutting edge innovation, and superior customer service.

Design Your Own WDT Now

DM Powder Coating System

Our custom Difference Maker DM COATING SYSTEM produces extraordinary trailer finishes that are exceptionally durable and beautiful. We offer multiple standard and custom COLORS to perfectly compliment your trailer.

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More Than Just a Trailer

Crabb Family

Family Owned and Operated

35 years ago a young East Texas couple embarked on a journey that at the time was merely a means to put food on the table for their growing family. Unbeknownst to them, their nature would have an endless impact on the business they would create…


Diamond C Team Members

This is who we are and what makes us Different

Our Purpose is to fuel the growth and success of Diamond C team members, our customers, and our community.
Our Niche is extraordinary trailers and service to match.
Our Core Values are Do Work and Love Strong.


GVWR Upgrades

Choose from 3 GVWR PACKAGES ranging from 25K to 30K. The 30K package includes 2 – 16,000 lb Heavy Duty Lippert Axles and 215/75R17.5 Radial Tires. Read THIS article for a refresher on the differences between GVWR and Payload.

Watch the video below for an in-depth explanation on choosing the correct GVWR package for your trailer.

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Learning Center

Your one-stop-shop for everything trailer related. In-depth articles and resources about our trailers, options, culture, and what makes us stand apart from the other guys.


Hutch Heavy Duty Suspension

Maximum Customizability

Choose from a variety of upgrades:

BOARD BRACKETS with Raised Front
– Custom COLORS
DECK on the Neck
– Black or Two Tone Aluminum WHEELS
– Heavy Duty Adjustable Suspension
– and more…

The choice is yours.
Configure your ideal trailer below.

Synchrony and Sheffield Logos

Finance Your Trailer

Finance a brand new WDT with ease through one of our trusted financial partners. Find out more HERE.

Diamond C Warranty Logo

Quality You Can Trust

We are proud of our trailers and stand by them. Every Diamond C trailer comes with an industry leading 3 Year WARRANTY.



Includes 2 - 10,000 lb Lippert Axles


Includes 2 - 12,000 lb Heavy Duty Electric Brakes, Oil Bath Axles


Includes 2 - 16,000 lb Heavy Duty Electric Brakes, Oil Bath Axles, ST215/75R17.5 Radial Tires






Curves distribute force throughout the neck so there is no concentration of stress in corners like traditional goosenecks.




Dump Main Frame


Dump Body Frame


Paint Type

DM Difference Maker Coating System Logo

We partnered with Sherwin Williams to develop our own custom designed powder coat finishing system that provides long-lasting, rugged, and beautiful trailer finishes.

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Special Color

Choose from a variety of our Special Colors below, or enter your own custom color of choice.


Paint Color


30,000 lb Bulldog BX1

Round Adjustable

30,000 lb Bulldog Square Load Leveler

Heavy-duty, high-strength, steel construction with an easy to use vertical adjustment design for a quick and secure connection on the road.

King-Pin Adapter

(Round Adjustable)



Dual 12,000 lb Drop-Leg Jacks

Two heavy duty, square, drop-leg trailer jacks with a side-wind handles.

Dual 12,000 lb Hydraulic JacksX


All LED Lights

Waterproof, all rubber-mounted, impact resistant, wired with a heavy duty wiring harness.


Deck on the Neck

Bolt-on Deck on the Neck

7' x 8' Bolt-on Deck with Clearance Lights

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Weld-on Deck on the Neck

7' x 8' Weld-on Deck with Clearance Lights

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Tarp Brackets

Provides tarp mounting position under a bulkhead that protects the tarp system from falling debris while not obstructing the loading area above the dump body.

Long-Arm Tarp System

24' Heavy Duty, Black Mesh Tarp, Spring-loaded Extend, Chain-drive Return


Tie Downs



Double Doors

Barn-door style double doors with heavy duty pin-lock latch.

3-Way Gate

3-way gate functions as a spreader gate, tailgate, and double doors for ultimate versatility.



Scissor Lift Hoist


Power Up, Power Down Electric Power Unit. Professional grade scissor lift powers up and down for safe, fast, and efficient dumping.


Power Up, Power Down Electric Power Unit. Professional grade scissor lift powers up and down for safe, fast, and efficient dumping.


No Scissor Lift on 13HP Gas Unit - Includes 8" Bore Telescopic Lift Cylinder

Hydraulic Systems


Bed Control

Tire Size

Wheel Color

Spare Mount

Spare Wheel Color

Spare Tire Size