About us

Dunbier Marine Products has been manufacturing boat trailers for over 35 years, building its reputation on quality, strength and reliability. With the Head Office situated in Braeside (Melbourne), Dunbier services the Australian market through an experienced and dedicated dealer network. The Dunbier plant is situated on a 2.43 hectare (6 acre) site and is purpose-designed for the manufacture and assembly of boat trailers in Australia and overseas. Having state Dunbier distribution centres in Sydney, Brisbane, Perth, Adelaide and now in Auckland - New Zealand, Dunbier is widely recognised as the market leader offering a superior product line of boat trailers.

Spencer Gulf Marine Offers trailers for powerboats ranging from three meters through to eight meters, Dunbier manufactures over 130 models. The trailer range reflects a constant commitment to continual product development and innovation. In the last ten years Dunbier has further enhanced its strength by exporting boat trailers throughout Europe, Asia and the South Pacific. Dunbier has taken its quality products to the world and successfully competes with manufacturers on a global scale. This is your guarantee that Dunbier is the finest product available both locally and internationally.

Always ahead of the competition

Dunbier has always relied on innovation rather than imitation, constantly releasing new designs to the marketplace. At Dunbier's manufacturing plant, each section of the production line is designed for constant evaluation of each stage of the manufacturing process. From cutting the bare steel through to final assembly, Quality Control is an integral part of every trailer. This ensures the finished product is not only impressive but reliable. Dunbier actively fosters a policy of continual product development and the regular enhancement of manufacturing facilities. Customer service, product quality and safety are our top priorities. Right down to having our Dunbier decals professionally designed to enhance the finished product. It may just be a trailer to many, but we strive for our trailers to be the best available.

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Deciding on the right trailer for you

Dunbier Marine manufactures an extensive range of trailers with many models to choose from. When making your choice, you should be sure that your boat, motor and trailer are matched to suit your individual needs and the requirements of the boat manufacturer. Your authorised Dunbier dealer will assist you in this process. For example, most aluminium boats need to be fitted to trailers with keel roller support. In this range Dunbier offers the Loader Series, Centerline Series, Rollamatic Series and the Sports Series. Fiberglass boats can be fitted to full multi roller trailers, such as the Supa Rolla Series, the Wide Track Series and the universal Rollamatic Series. It is important to discuss your individual needs and requirements to suit their hull designs. Be assured that Dunbier is ready to support you at every stage of your trailer selection, set up and operation. Dunbier customer support is available in all major cities and states. Dunbier is the only trailer manufacturer that offers you national and international support through our carefully selected authorised dealer network. Our global network includes qualified marine dealers in even the most remote locations.

Trailer Capabilities & Braking Requirements

When making your selection on a new trailer or a complete package, it is important to note the maximum weight capacity of the trailer. This information is contained on the ID plate fitted by Dunbier to the trailer. The nominated weight capacity includes the trailer. You should allow for marine gear and approximately 1 kg for every liter of fuel. If you overload the trailer, problems may occur such as blown tires and bent axles. It's just not worth it. To avoid problems, upgrade your wheelbase or change to a tandem axle arrangement .Brakes or no brakes? The law varies in different countries but in Australia brakes are required on one axle for boat, motor, trailer combinations over 750kg and under 2,000kgs. Over 2,000kg, a Hydrastar Breakaway Braking system is required and calipers must be fitted to all wheels.

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WIDE TRACK SERIES

Dunbier took the ultimate, strong and reliable boat trailer then went to work on it. For starters, the frame was refined, then engineered wider, this lets those deep vee hulls to ease right down into the trailer. Next to be added was the wrap-a-round walkway just to keep your feet dry. Then we attached the galvanised axle and springs to the main frame and added the white custom guards and white wheels. To give your boat protection while retrieving, plastic keel guards between the roller arms were added and an "S" bend in the rear cross member was incorporated. Finish the lot off with galvanised bots and u-bolts, and the Wide Track Series is built to work and be seen.

SUPA ROLLER SERIES

The Supa Rolla Series is the classic self centering multi-rolla trailer. With the Supa Rolla Series, the boat can be driven on or winched on, it's your choice. The frame is designed wider to allow deep vee boats to remain low for easy launch and stable trailering. With the clever shaped rear cross member, the first of its kind on the market today, this trailer will self centre your boat in any tide or ramp conditions.

Rollamatic Series

The Rollamatic Series offers boaters a competitive range of trailers for both fibre glass and aluminum boats with the benefit of adjustable keel support for the hull as well as a fully adjustable cradle roller system. Like all Dunbier models, the Rollamatic Series offers a heavy duty frame…even the smaller Dunbier models have the same attention to detail that you'll find in the larger models.

Loader Series

For the fisherman who wants it all, the Loader Series delivers. The design, workability, leadability, practicality, stability and overall performance took months of planning and testing to achieve. The pivoting rear loading system and skid support is an advantage like no other trailer. Picture the boat half way down the trailer…the rear cross member and skid supports place your boat gently into the water and retrieve it again with minimum fuss. With the Loader Series, you won't be waiting at the ramp for long, your precious time will be on the water thanks to this easy launch and retrieve system.

Centreline Series

The Centreline trailer is specifically designed for the aluminum boat user with its specifically designed self-centering poly vee slides, poly rollers and Galvanised steel and poly skids. Designed to slide your boat off with ease, the Centreline trailer then self-centre's your boat in normal conditions every time you drive or winch your boat back onto the trailer.

Sport Series

Whether you want a 3.7M trailer for your tinnie or a trailer for your personal watercraft, our Sports Series has a comprehensive range of models to suit you. Don't settle for less than the extra strength, styling and quality that this Dunbier Sports Series offers. Suited for both aluminum and fibreglass hulls.

Nipper Series

The Nipper Series offers a competitive range of solid small boat trailers available in assembled or knock-down form in two compact boxes. The trailers are easy to assemble with easy to follow instructions, requiring no drilling or welding…you just bolt it together. New adjustable wheel-base, heavy duty frame, and pre-loomed submersible lighting make this range of trailers true value for money.