Lost Trak 18.5. Dual-Axle
Off-Road Hybrid Caravan
The flagship of the Lost Trak range — tandem-axle chassis, full internal kitchen with twin induction and microwave, ensuite with composting toilet, and 1,000W solar paired with 660Ah lithium. Weeks off-grid in full-caravan comfort, still built for where sealed roads end.
Lost Trak 18.5 Hybrid Caravan
Flagship Off-Road Luxury,
Built For The Longest Trips
Take the full video walkthrough of the Rhinomax Lost Trak 18.5 — our flagship tandem-axle hybrid caravan with a full internal kitchen, internal ensuite, Cruisemaster XT airbag suspension, and the deepest off-grid power system in the range. Hand-built in Queensland for the serious long-haul tourer.
Full Internal Kitchen
Twin induction cooktop, microwave, 80L fridge/freezer, and Rhino-Stone benchtops as standard — genuine full-caravan cooking, inside, no matter the weather.
Deepest Off-Grid Power
660Ah lithium, 1000W solar, Victron 3000VA MultiPlus, and twin Smart MPPT controllers — the deepest off-grid setup we build, designed for weeks without a powered site.
Tandem-Axle Stability
Dual-axle chassis with Cruisemaster XT 3,500kg airbag suspension (level 3) — serious stability on the highway, serious capability when the highway ends.
Lost Trak 18.5 Interior
Full-Caravan Liveability,
Off-Grid Ready
The Lost Trak 18.5 is the only caravan in our range with a **full internal kitchen** — twin induction cooktop, microwave, 80L internal fridge/freezer, and Rhino-Stone solid-surface benchtops. Paired with a queen innerspring bed, full-grain leather café lounge, HD smart TV, and a full ensuite with composting toilet, it's a genuine house on wheels for months-at-a-time touring.
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Queen Innerspring Bed With Deluxe Bedhead
Full queen-size bed with premium innerspring mattress, deluxe bedhead incorporating built-in storage pods, twin reading lights, bedside storage compartments, and twin under-bed drawers — your full-sized bedroom at the end of every day. -
Full Internal Galley Kitchen
Twin base kitchen units with overhead storage, Rhino-Stone premium solid-surface benchtops (Australian-made, Corian-comparable), twin induction cooktop, microwave oven, and 80L internal fridge/freezer. Cook full meals inside regardless of what the weather's doing. -
Full-Grain Leather Café Lounge
High-backed full-grain leather seating with dining/coffee table, generous enough for meals, remote work, or an evening in with the HD smart TV and Fusion Bluetooth stereo overhead. -
Full Ensuite With Composting Toilet
Fully-enclosed ensuite with full-size shower tray, diesel-heated hot/cold power shower, waterless composting toilet as standard, and integrated roof extractor fan — complete self-containment for indefinite off-grid stays. -
HD Smart TV & Fusion Stereo
Roof-mounted air conditioning, Webasto diesel cabin heating, Sirocco 3-speed fan, electric-opening skylight, HD digital smart TV, and Fusion Bluetooth stereo with twin speakers — genuine home-away-from-home entertainment and climate control.
Lost Trak 18.5 Exterior
Dual-Axle Capability,
Full-Size Outdoor Living
The Lost Trak 18.5 sits on a twin-axle galvanised chassis with Cruisemaster XT airbag suspension — built to carry a full-size interior plus a substantial outdoor living zone. Bigger awning, bigger cargo capacity, rear view camera standard, and a full external kitchen for when you want to cook outside.
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Twin-Axle Cruisemaster XT Suspension
Tandem-axle chassis with Cruisemaster XT 3,500kg level-3 airbag suspension and Cruisemaster DO35 off-road coupling — built to carry the weight of a full-sized interior across serious touring terrain with genuine stability. -
External Slide-Out Kitchen
Full slide-out gourmet kitchen with expandable stainless bench, plumbed hot/cold mixer tap, stainless sink, large utensil drawer, twin insulated pantry drawers, and your choice of 3-burner gas or induction cooktop — a second full kitchen to complement the internal galley. -
85L Dual-Zone Fridge/Freezer
External slide-mounted 85L dual-zone fridge/freezer — paired with the 80L internal fridge for **165L of combined cold storage**, so you can actually stock up for weeks at a time without returning to town. -
5m × 2.5m Awning
Expansive 5m × 2.5m external awning — the biggest in our hybrid range — creating a full-sized outdoor entertainment area, with twin under-awning lights for evenings at camp. -
Rear View Camera Standard
Integrated rear view camera fitted as standard — critical for reversing a 7.3m dual-axle rig into tight campsites, and a useful extra eye when navigating narrow forest tracks. -
Front Storage Box & Cargo Basket
Large lockable front storage box with pole storage compartment, integrated cargo basket for firewood, lockable gas box, and twin jerry can holders — serious storage for serious touring, with 1,000kg of payload to fill. -
Large Underbed Cargo Bays
Deep underbed storage compartments accessed externally — designed to swallow recovery gear, tools, bulky touring equipment, and everything you'd want for an extended expedition off the beaten track.
Flagship Marine-Grade Power System
The Biggest Power System
In The Rhinomax Range
The Lost Trak 18.5 runs our flagship Victron configuration — a 3000VA MultiPlus inverter/charger paired with 1000W of roof-mounted solar and a massive 660Ah lithium battery bank. Run the air conditioner, microwave, induction cooktop, TV, and fridges simultaneously, and still have power left in the tank. Built to support full-caravan liveability anywhere in Australia.
Victron 3000VA Marine-Grade
Victron 3000VA MultiPlus inverter/charger with 120A AC charger and a 50A DC-DC charger for vehicle-based charging. Built to marine specification — the same reliability standard trusted on ocean-going vessels.
RM Digital Command Centre
Rhinomax's intelligent power management system gives you full control from a touchscreen, smartphone, or manual switches — monitor batteries, solar, water, and lighting in one dashboard, with smart towing, camping, and storage modes.
1000W Solar & 660Ah Lithium
The biggest solar and battery setup in the range — 1000W roof-mounted monocrystalline array feeding a 660Ah lithium bank, managed by twin Victron Smart MPPT controllers (150/70A + 100/50A). Auxiliary solar connection for portable panels means even more power when you need it.
Lost Trak 18.5 Specifications
Engineering Specifications
Every Lost Trak 18.5 hybrid caravan is hand-built to the same verified specification — our flagship dual-axle platform, engineered for full-caravan comfort, serious off-grid capability, and touring confidence in Australian conditions. Key capacities can be upgraded at order.
- Tare Weight
- 2,500 kg
- ATM
- 3,500 kg
- Ball Weight
- 240 kg
- Payload Capacity
- 1,000 kg
- Body Length
- 5.66 m
- Overall Length
- 7.3 m Excluding spare wheel
- Width
- 2.1 m
- Height
- 2.82 m Excluding air con
- Solar Power
- 1,000 W
- Lithium Battery
- 660 Ah
- Fresh Water
- 210 L 125L + 85L dual tank
- Grey Water
- 85 L
Capacity upgrades for solar, lithium, and water availabl
Lost Trak 18.5 Detailed Walkthrough
The Full Flagship Tour
Our in-depth walkthrough of the Lost Trak 18.5 hybrid caravan — every storage bay, the full internal kitchen, the external kitchen, awning setup, bathroom, bedroom, and the complete off-grid electrical system. Everything you need to understand our flagship in one video.
Grab a coffee — this is a proper flagship walkthrough for serious buyers.
Lost Trak 18.5 Pricing
Hand-Built From $185,990
You've seen the full internal kitchen with twin induction and microwave, Cruisemaster XT dual-axle airbag suspension, 1000W solar paired with 660Ah lithium, and a full ensuite with composting toilet. Every Lost Trak 18.5 is hand-built to order in Queensland — our flagship, configured around exactly how you travel.
Base-spec price. Excludes customisation, optional upgrades, delivery, and on-road costs.
Lost Trak 18.5 Specifications
Download The Full 2026 Brochure
Get the complete Lost Trak 18.5 flagship hybrid caravan specifications — dual-axle chassis detail, full internal kitchen spec, electrical system schematics, body dimensions, and every standard feature plus available upgrades. Sent directly to your inbox.
Your information is protected under our privacy policy. We'll send the full brochure vault where you can access all Rhinomax model brochures.
Aerospace-Grade Engineering
Built Like Nothing Else
On An Australian Track
The Lost Trak 18.5 is built around our bespoke-engineered dual-axle Performance Chassis. Hot-dip galvanised for lifelong corrosion protection and paired with Cruisemaster XT 3,500kg airbag suspension (level 3) as standard, giving you adjustable ride height, load-levelling, and premium damping across the toughest Australian tracks.
Bodies are built from premium German-engineered composite panels, reinforced internally with our proprietary EXO-skeleton structural frame. Designed to absorb the impacts, vibrations, and thermal cycling of genuine Australian off-road touring, even when you're carrying the full 1,000kg payload.
Engineered By
Andy Dean, Director & Head Engineer
Former aerospace engineer, McDonnell Douglas & Rolls Royce
Owner-First Service
Service That
Travels With You
At Rhinomax, you're more than a number. From your first enquiry through to handover day, you'll work with a dedicated specialist guiding you through model selection, full customisation of your flagship build, the build timeline, and comprehensive handover instruction.
That personal relationship doesn't end at delivery. After handover, you're connected directly with the engineering team who built your caravan, plus a growing community of 1,000+ Rhinomax owners touring across every corner of Australia.
Every Lost Trak 18.5 is hand-built to order at our Queensland workshop, with an estimated one-month build time once construction begins.
Book Your Viewing
See The Lost Trak 18.5
In Person
Experience our flagship hybrid caravan build quality for yourself. Visit our Queensland headquarters for a showroom tour or a private virtual walkthrough, or drop into one of our NSW dealer locations in Sydney or Newcastle.
Showroom & Virtual Tours Visit Our NSW Dealer Off Grid Outfitters
Smeaton Grange & Newcastle