Doonan Specialized Trailers

Built for the loads that don’t fit anywhere else

Featured Doonan Products

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Some trailers are built for general hauling.

Doonan builds for the jobs that keep most manufacturers up at night.

For more than forty years, Doonan has carved out its place as the go-to name for specialized platform trailers across North America. Fleets and owner-operators rely on Doonan because the engineering is thoughtful, the frames are tougher than they look, and the customization options seem almost endless. Steel, aluminum, hybrid builds… step decks, double drops, extendibles… mechanical or hydraulic RGN… there’s a Doonan trailer for nearly any industry that moves oversized or irregular cargo.

At Kingpin, we pair that factory expertise with our own hands-on experience, helping customers choose and spec out the exact build that fits their work, their routes, and their payload requirements.

It’s the kind of partnership that saves headaches down the road. Literally.

Drop Decks

Drop deck trailers are similar to flatbeds but feature a lowered deck behind the gooseneck, allowing for taller loads and improved stability thanks to a lower center of gravity. While most have a fixed neck, some models are available with removable or folding options. They are also commonly known as step decks or single drops.

Typically ranging from 48 to 53 feet in length, drop deck trailers can also be built in a variety of custom sizes. Extendable versions are available, allowing the lower deck to slide open and accommodate longer, self-supporting loads.

These trailers are constructed from steel, aluminum, or a combination of both, with different models designed to suit specific performance and durability requirements.

drop decks Products

Flatbed Trailers

Flatbed trailers are simple, versatile, and suited for transporting a wide range of loads. They can be loaded from the side by forklift, from the rear at a dock, or from above using a crane. Their open design provides maximum usable deck space, making them a practical choice for many applications.

Standard flatbeds typically range from 45 to 53 feet in length, though custom sizes are available, along with extendable options for longer loads. With a standard deck height, they can accommodate freight up to around 8’4”. For taller cargo, a drop deck trailer may be a better fit.

Flatbeds are built from steel, aluminum, or a combination of both, balancing strength and weight. They offer a range of load capacities depending on configuration, with numerous customization options available to meet specific operational needs.

Flatbed Trailers Products

Why Choose Doonan from Kingpin?

Support from a team that understands specialized hauling

Access to fully customized builds to match your industry

Pre-delivery inspection and safety checks handled by experts

Strong resale value thanks to Doonan’s long-standing reputation

Guidance on spec’ing for cross-border work between Canada and the U.S.

Ready to Spec Your Next Trailer?

Whether you’re hauling machinery, steel, equipment, or oversized freight, we’ll help you configure the right Doonan model for your work.

Connect with Kingpin

(780) 447-1970

Ready to put your fleet on a smarter maintenance program?

Call 1.800.661.5960 or Book a Fleet Service Appointment today.