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Independent Suspension

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Independent Airbag and Coil Suspension Systems

Wild Duck airbag independent suspension is designed and built for camper trailers venturing into the wild, Cape York country.

Wild Duck suspension is the best performing offroad running gear money can buy.

Older offroad beam axles are now becoming less popular as coil and airbag suspension continues to perform well in tough conditions.

Are you ready for high quality, heavy-duty axle suspension that is specifically turned for outback dirt roads?

Suspension systems are available for 1250kg single axle brake systems up to 4.5t for tandem kits. However, airbags and coil suspensions are not recommended for rigs under 1250kg.

The Couplemate, Wild Duck Independent Coil suspension kit contains a live, replaceable axle that features zero camber at full load.

Matching trailer suspension to the ruggedness of a 4WD suspension makes a lot of sense.

Coil independent suspension vs leaf spring suspension.

Understanding Stub Calculation

The Face to Face measurements to calculate Tip to Tip measurement as follows:

2T 205mm Lazy add 172mm.

Camber Adjustment

As a result of extensive research, prototype building and testing, Couplemate understand the complexity of camber and camber adjustments.

Couplemate was the first company to discover a rigid suspension system which in turn, solved the camber adjustment riddle.

Normally, camber changes with the addition and subtraction of water, sewerage, food and beer.

Camber changes again coming home with a light camper. Owners, in the past, have always had a problem with camber adjustment. No fix exists other than to continually re-adjust the camber.

Costs associated with camber adjustment are unacceptable to campers, therefore the need for a better offroad spring system evolved.

As a result, heavyweight suspension systems were developed, manufactured and sold by Couplemate requiring no camber adjustment.

Further, this discovery was made using coil springs on independent suspension.


In the 21st century, purpose-built single airbags containing two individual pockets prolongs the life of the airbag. Each pocket of the airbag has a non-return valve decreasing the air volume, resulting in a smooth ride effect.

Dual airbag maximises the strength and capability of suspension to operate independently. The independent nature of the system guarantees against complete airbag failure if one of the twin bags rupture.

Wild duck airbags support uneven loads, the suspension kit offers two delivery air switches to allow the division of the left and right sides of the camper.

Airbag adjustment enables a level caravan on uneven terrain. As a result, there is no need to install stabilisers or levelling jacks.

A twin-cylinder, a 12-volt air compressor is included with the kit along with fittings and hoses.

Shock Absorbers

One of the toughest terrains in the world demands the toughest shock absorbers. Wild Duck shock absorbers parade a huge 18mm chromed rod, 36mm bore with Teflon seals.

Incidentally, if you find yourself are stuck for parts and in a hard place, visit our store locator or better still, contact our sales team. He may have what you need to get your rig mobile again.

Finally, robust twin-tube design and an outer tube 2.5mm thicket are ready to conquer anything.

Couplemate sells only sells the best quality independent suspension and spares throughout Australia—covering the Northern Territory, Western Australia, South Australia, Victoria, New South Wales, and Queensland. We also ship products via Australia Post Air to New Zealand.