PolyAir Airbags with Cradle Kit: The Ultimate Off-Road Articulation on Leaf-Sprung 4WDs

When it comes to towing, touring, or hauling heavy loads, Polyair are one of the most trusted solutions in Australia. They keep your vehicle level, improve safety, and make driving with a load far more comfortable.

But there’s always been one problem with traditional airbag suspension kits: they can limit suspension travel off-road. That means less articulation, less grip, and less capability when you hit uneven tracks.

The answer? Polyair’s optional Cradle Kit for their Bellows airbags.

PolyAir bellows airbag disengaged from chassis at full flex on a GVM-upgraded D-MAX with optional cradle kit.

How Polyair Airbags Work

Polyair Airbags (also known as Polyair Bellows) are designed for leaf-sprung vehicles. They provide adjustable air support (5–100 PSI), so you can level out your vehicle when towing, carrying tools, or loading up for a big trip.

The result:

• No more sagging rear ends.

• Safer handling and braking.

• A smoother ride, whether you’re loaded or empty.

It’s the flexibility that makes Polyair Airbags so popular with Aussie 4WDers.

Compressed PolyAir airbag engaged with chassis under load on a GVM-upgraded D-MAX.

The Game-Changer: Polyair Cradle Kits

Where Polyair Airbags really stand out from other airbag suspension options is the optional Cradle Kit. One end of the bellow airbag is allowed to move away from the chassis, axle, or leaf pack (depending on the vehicle). This lets your suspension achieve full down travel when off-road.

The Cradle Kit can be used with any new or pre-installed Polyair Bellow kit, making it a simple upgrade whether you’re fitting airbags for the first time or already running them.

When the vehicle returns to level ground, the Polyair bellow airbag simply slots back into the cradle, resuming its normal job of levelling the load.

That means:

• On-road: prevent rear-end sagging when loaded or towing.

• Off-road: full suspension travel and articulation for maximum traction.

It’s the best of both worlds — and a feature you won’t find with many other airbag suspension systems.

Benefits of Polyair Bellows with Cradle Kits

Uncompromised Off-Road Articulation – keep your tyres on the ground and your rig stable.

Durable Construction – lightweight resin with drain holes to prevent water and debris build-up.

Perfect for Lifted Vehicles – designed for leaf-sprung 4WDs with at least a 1” lift.

Fits All Polyair Bellows Kits – easy integration if you already run Polyair Airbags.

Load Support You Can Trust – proven performance when towing caravans, hauling tradie gear, or touring fully loaded.

Why Choose Polyair Airbags for Your 4WD?

For many 4WD owners, airbags are a must-have for towing and load carrying. The problem has always been that most airbags compromise off-road performance. With Polyair Airbags and the Cradle Kit, you don’t have to make that choice anymore.

You get:

• Stability on the highway when towing.

• Confidence off-road with full articulation.

• Proven durability in tough Australian conditions.

PolyAir bellows airbag fitted to Ford Ranger with GVM upgrade, showing compressed setup under load.

Final Word

If you’re looking for Polyair Airbags in Brisbane or anywhere in Australia, make sure you consider the optional Polyair Cradle Kit. It’s a clever upgrade that solves the biggest issue with airbag suspension, giving you confidence both on-road and off-road.

👉 Ready to upgrade your 4WD with Polyair Airbags? Contact us at BAW Automotive

and we’ll help you choose the right kit for your setup.