Cruisemaster XT vs ATX: What's the Difference?
Cruisemaster XT and ATX are two of Australia's best-known independent suspension systems for off-road campers and caravans. Both are designed for serious all-terrain touring, both are available with air or coil springs, and both can be configured with drum or hydraulic disc brakes. So what actually separates them — and when is ATX worth the additional weight?
Explore The Rhinomax RangeATX is heavier duty. That doesn't automatically make it the better choice.
Cruisemaster XT is a highly capable independent all-terrain suspension system with a long history under Australian campers and caravans. ATX takes that philosophy further with substantially heavier-duty components including larger stub axles, larger bearings and premium monotube dampers.
In some configurations, that enables ATX to support a higher suspension rating — particularly on single-axle air systems. But there is a trade-off: the stronger ATX hardware is itself heavier.
The objective is therefore not to simply fit the biggest suspension available. It is to select the suspension architecture that gives the camper the required load capacity, durability and ride characteristics without adding unnecessary mass.
The basic distinction
- XT: lighter, proven and extremely capable for all-terrain touring.
- ATX: larger heavy-duty hardware for greater capacity and demanding applications.
- Payload: ATX can enable higher ratings, but its own additional mass also contributes to tare.
- Specification matters: axle count, ATM, brakes, wheels, tyres and chassis all need to be considered together.
Suspension capacity and payload are not the same thing
It is tempting to look at a higher-capacity suspension and assume that every kilogram of additional suspension rating becomes extra payload.
It doesn't quite work that way.
A caravan's usable payload is broadly the difference between its certified Aggregate Trailer Mass (ATM) and its tare weight. The suspension is one part of the engineering required to achieve that ATM, but it is not the only part.
The chassis, coupling, brakes, wheels, tyres, axle group and other structural components all need to be suitable for the intended rating. The vehicle also needs to be correctly certified at that ATM.
ATX uses physically heavier components to achieve its heavy-duty specification. So while it can allow a higher suspension capacity in applications where XT reaches its limit, some of that advantage is offset by the additional weight of the ATX hardware itself.
That is why we look at usable payload and complete vehicle weight, not simply the number printed on the suspension specification.
Heavier-duty suspension can help create more payload capacity — but the suspension itself is also part of the payload equation.Cruisemaster XT vs Cruisemaster ATX
Both systems are genuine all-terrain independent suspensions. The biggest differences are found in the size and specification of their load-bearing components.
The proven all-terrain workhorse
XT helped establish independent arm suspension as a mainstream solution for Australian off-road campers and caravans. It combines strong load capacity with a relatively efficient, versatile design.
- + Independent A-frame suspension arm design
- + Available with coil springs or air suspension
- + G35 or G40 dual-tube shock absorber options
- + Adjustable toe and camber
- + Electric drum or ventilated hydraulic disc brake options
- + Broad range of single and tandem axle configurations
- + Lighter architecture than the heavier-duty ATX system
The heavy-duty premium platform
ATX was developed as Cruisemaster's premium all-terrain suspension architecture, using substantially larger load-bearing components and higher-end damping hardware.
- + Extra heavy-duty suspension arm construction
- + 63mm stub axle and larger bearing package
- + 46mm piggyback monotube shock absorbers
- + Lockable toe and camber adjustment
- + 140mm long-travel suspension design
- + Single-axle air configurations available up to 3000kg ATM
- − Heavier components add more mass to the finished camper
Where XT and ATX actually differ
There are many available configurations within both suspension families, but these are the major differences relevant to most caravan buyers.
| Feature | Cruisemaster XT | Cruisemaster ATX | What It Means |
|---|---|---|---|
| Suspension architecture | Independent A-frame arm | Heavy-duty independent single arm | Both allow each wheel to react independently to terrain. |
| Spring options | Coil or air | Coil or air | Either family can be configured around fixed coils or height-adjustable air suspension. |
| Stub axle | 50mm class on current Rhinomax XT applications | 63mm | ATX uses substantially heavier-duty running gear. |
| Shock absorbers | G35 or G40 dual-tube | 46mm piggyback monotube | ATX uses a more performance-oriented damping package with greater oil volume and thermal capacity. |
| Toe & camber | Adjustable | Lockable adjustment | Both allow wheel alignment to be tuned rather than relying on a fixed axle geometry. |
| Single-axle air capacity | Up to 2600kg ATM | Up to 3000kg ATM | This is one of the clearest applications where ATX creates additional capacity. |
| Tandem capacity | Configurations up to 4500kg ATM | Configurations up to 4500kg ATM | ATX is not automatically required simply because a caravan is tandem axle. |
| Brakes | Drum or ventilated hydraulic disc | Drum or ventilated hydraulic disc | Brake specification can be tailored independently of the basic XT vs ATX decision. |
| System mass | Lighter architecture | Heavier-duty and therefore heavier | ATX's additional component strength comes with a tare-weight trade-off. |
Exact ratings and component combinations depend on axle configuration, spring type, brakes and individual suspension specification. Always use the specification for the actual system fitted to the caravan.
What do the heavier ATX components actually change?
ATX's advantages come from physical engineering changes rather than simply a different badge on the suspension arm.
Stub Axles & Bearings
The stub axle carries the hub, wheel and bearing assembly and transfers substantial loads back into the suspension arm.
ATX uses a 63mm stub axle and a larger bearing package. This gives the system more substantial running gear for demanding load applications, but naturally requires more material — and therefore more weight.
Shock Absorbers
XT uses Cruisemaster's G35 or G40 dual-tube dampers depending on specification. These are proven all-terrain shock absorbers designed around the XT platform.
ATX moves to large 46mm piggyback monotube dampers. The larger damper architecture is designed to manage suspension movement and heat under demanding conditions.
Suspension Arms
Both systems are independent, allowing one wheel to move without forcing the opposite wheel to follow it through the same motion.
ATX takes a deliberately heavy-duty approach to the arm and running gear. XT, by comparison, uses its long-developed A-frame arm architecture to achieve strong performance without carrying the same quantity of material.
Travel & Ride Control
ATX is specified with up to 140mm of wheel travel and a premium damping package designed around high-capacity all-terrain applications.
XT remains a genuine extreme off-road capable suspension in its own right. For many campers, increasing the component size beyond XT does not meaningfully change where the vehicle can travel.
XT vs ATX is not the same question as air vs coil
This distinction is easy to miss.
Both Cruisemaster XT and ATX can be configured with coil springs or air suspension. Choosing ATX does not automatically mean choosing airbags, and choosing XT does not mean settling for coils.
Coil springs provide a relatively simple, mechanically robust suspension solution. Once the spring rate is correctly matched to the vehicle, they provide consistent support without requiring an onboard compressor or air-management system.
Air suspension provides another layer of flexibility. Air pressure can be adjusted to maintain the correct ride height as loads change, and the system can be used to level the camper from side to side when parked.
Water, food, tools, recovery gear and luggage can significantly change the load carried by a touring caravan. Air suspension allows the suspension to maintain its intended operating height as that load changes, while also giving owners useful levelling capability at camp.
Higher-level Cruisemaster air-management systems can also add automatic travel-height control, campsite levelling and other functions depending on the system fitted.
So there are really two separate choices: first, whether XT or ATX is the appropriate mechanical platform; second, whether air or coil is the right spring system for the owner.
Does ATX give you more payload?
Potentially — but this needs to be explained carefully.
On a single-axle air-suspension application, current Cruisemaster XT systems are available up to 2600kg ATM, while ATX Air can be specified at 2800kg or 3000kg ATM.
That higher suspension capacity can be extremely useful when designing a camper such as the Lost Trak 16 around a 3000kg ATM.
But fitting ATX does not magically add 400kg of cargo capacity to an existing camper.
If a heavier-duty suspension allows a higher certified ATM, payload can increase. But ATX itself uses larger, heavier components, so the suspension upgrade also increases the vehicle's tare weight. The net payload benefit is therefore smaller than simply subtracting one suspension rating from another.
More importantly, the suspension is not the only limiting component. The chassis, brakes, tyres, wheels, coupling and complete vehicle design need to be engineered and certified for the target ATM.
This is why Rhinomax specifies suspension during the engineering of the complete camper rather than viewing it as an isolated bolt-on component.
Why we don't simply put ATX under every model
Looking across the Rhinomax range shows why the decision is more nuanced than “small camper equals XT, big camper equals ATX.”
| Model | Suspension | ATM | Why The Specification Makes Sense |
|---|---|---|---|
| Renegade 12 | Cruisemaster XT 2600kg | 2600kg | XT provides serious off-road capability while supporting the Renegade's lightweight, compact design philosophy. |
| Defender 15 | Cruisemaster XT 2600kg | 2600kg | The XT platform provides the required capacity without carrying heavier suspension hardware unnecessarily. |
| Lost Trak 16 | Cruisemaster ATX Air | 3000kg | The 3000kg single-axle platform takes advantage of ATX's higher single-axle air-suspension capacity. |
| Lost Trak 18.5 | Dual-Axle Cruisemaster XT Air | 3500kg | A tandem XT configuration comfortably supports the vehicle's 3500kg ATM, demonstrating that a larger caravan does not automatically require ATX. |
| Vantage 18.5 | Cruisemaster ATX Air | 3500kg | The Vantage uses ATX as part of its flagship specification, adding premium heavy-duty suspension hardware rather than simply chasing a higher ATM. |
Specifications can change between model years and tailored builds. Always refer to the current build specification for the individual camper.
Does ATX let you go places XT can't?
For most owners, not in the simple sense people imagine.
Cruisemaster rates XT for terrain ranging from highways and sealed roads through dirt roads, corrugations and extreme off-road use. It is already a serious all-terrain suspension platform.
ATX gives the engineer a heavier-duty component set, greater capacity in certain configurations and a premium damping package. Those advantages become increasingly relevant as vehicle mass, suspension loads and operating demands increase.
But off-road capability is determined by far more than the name on the suspension arm.
Overall vehicle dimensions, ground clearance, departure angle, track width, tyre selection, tow vehicle, chassis strength, driver judgement and the simple physical size of the camper often determine where you can realistically travel long before an XT suspension becomes the limiting factor.
ATX is not a ticket to a different category of track. It is a heavier-duty engineering platform for applications that benefit from its additional capacity and component specification.What about servicing and maintenance?
Both XT and ATX are mechanical suspension systems operating in a punishing environment. Corrugations, dust, water crossings and heavy loads mean routine inspection remains important regardless of which system is fitted.
Both systems use serviceable bushes, wheel bearings, brakes and alignment components. Wheel nuts, suspension fasteners, bushes, shock absorbers, brake systems and wheel alignment should all be inspected at the prescribed intervals.
Air-suspension versions also introduce airbags, airlines, valves, compressors and control hardware that should be checked as part of normal servicing.
One of the reasons Rhinomax uses Cruisemaster is not simply how the suspension performs when new. Cruisemaster systems are widely used across Australia, with established parts, technical support and service knowledge available when owners are thousands of kilometres from home.
Specify the suspension to the camper — not the brochure
Bigger components can be valuable, but carrying unnecessary weight is not good engineering either. We choose between XT and ATX based on the complete vehicle rather than treating ATX as an automatic upgrade.
- Start with actual vehicle mass Tare, ATM, axle configuration and desired payload determine the basic load requirement.
- Match the complete running gear Suspension, brakes, wheels, tyres, coupling and chassis must work as one system.
- Consider real travel conditions Highway kilometres, corrugations, remote tracks and expected loads all influence the final specification.
- Don't add weight without a reason ATX's heavier hardware is valuable where the application benefits from it — not simply because the component is larger.
- Choose air or coil separately Spring type is selected around ride-height control, changing loads, levelling and the owner's preferences.
- Think beyond handover day Parts availability, servicing and nationwide support matter when the camper is designed to travel remotely.
Which is better: Cruisemaster XT or ATX?
There isn't a universal winner. The better suspension is the one correctly matched to the vehicle.
You already have enough capacity
- ✓ The required ATM sits comfortably within the appropriate XT configuration
- ✓ Keeping tare weight under control is important
- ✓ You want proven independent all-terrain suspension without unnecessary component mass
- ✓ The intended terrain does not require a heavier suspension rating than the vehicle itself needs
The heavier-duty hardware earns its weight
- ✓ A higher single-axle suspension capacity is required
- ✓ The camper's mass and intended use justify larger running gear
- ✓ You want the premium 46mm monotube damping package
- ✓ The additional component strength is worth the increase in tare weight
- ✓ You are specifying a premium build where ATX's hardware forms part of the overall engineering brief
Cruisemaster XT and ATX owner guides
This article explains the differences between the two suspension platforms from a buyer's perspective. For servicing schedules, component identification, air-system operation and troubleshooting, use the dedicated Rhinomax Knowledge Base guides.
Cruisemaster XT vs ATX FAQs
What is the main difference between Cruisemaster XT and ATX?
Is Cruisemaster ATX better than XT?
Does ATX give a caravan more payload?
Is Cruisemaster ATX heavier than XT?
Can Cruisemaster XT handle serious off-road travel?
Are XT and ATX both available with airbags?
What is the maximum capacity of Cruisemaster XT?
What is the maximum capacity of Cruisemaster ATX?
Why does Rhinomax use both XT and ATX?
The right suspension is the one matched to the camper
XT or ATX. Air or coil. Drum or disc. The suspension underneath a Rhinomax is specified around the camper's weight, payload, layout and the way its owner intends to travel. Every Rhinomax is built to order, allowing the complete running gear package to be configured as one integrated system.
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