The Fiamma Ultra-Box Deep Black is the ultimate rear-mounted storage solution for motorhome, campervan, and caravan owners who want secure, weatherproof luggage space without compromising interior room. Available in three generous capacities (320L, 360L, and 500L), this premium cargo box transforms wasted space at the rear of your vehicle into practical storage for outdoor gear, camping equipment, muddy boots, or wet weather clothing. Whether you're touring the Scottish Highlands or exploring European campsites, the Ultra-Box keeps your belongings protected and organised brilliantly throughout your journey.
Constructed from high-quality ABS-PLUS material with an internal aluminium profile, the Fiamma Ultra-Box delivers exceptional durability and impact resistance that stands up to the rigours of long-distance travel perfectly. The clever co-extruded design features water-tight foam seals that create a complete barrier against rain, road spray, and dust, whilst the UV-resistant construction prevents fading and degradation even after years of exposure to harsh sunlight. An integrated flexible luggage net secures items inside, preventing movement during transit, and the handy air-assisted opening mechanism ensures smooth, effortless lid operation every time you reach your pitch and need to access your gear.
Mounting versatility is a standout feature of the Ultra-Box system. Standard mounting brackets allow direct attachment to Fiamma Carry-Bike rear-mounted bike racks, transforming your cycle carrier into a brilliant dual-purpose storage platform. Alternatively, use the optional Wall Fit Kit to mount the box directly onto your motorhome's rear wall, creating a permanent storage solution that doesn't interfere with bike carrying capacity. The sleek Deep Black finish complements modern vehicle aesthetics brilliantly whilst providing a professional, coordinated look that enhances your motorhome's appearance.
The three size options cater perfectly to different vehicle types and storage requirements. The compact Ultra-Box 320 (320 litres) suits shorter motorhomes and campervans where space is at a premium, measuring 100cm wide. The streamlined Ultra-Box 360 (360 litres) offers a slimmer profile at 38cm deep but extends to 147cm in length, perfect for storing longer items like awning poles or fishing rods. The flagship Ultra-Box 500 (500 litres) provides maximum capacity with 147cm length and 53cm depth, ideal for families or extended touring holidays. All models feature the same 70cm height and share Fiamma's legendary build quality. Transform your motorhome's storage capacity today with the Fiamma Ultra-Box Deep Black – the perfect choice for serious tourers who want to maximise their adventure potential.
Fiamma Ultra-Box - Deep Black Features
- Premium ABS-PLUS Construction : High-quality ABS material with aluminium inner profile for exceptional durability and impact resistance
- Water-Tight Seals : Co-extruded design with foam seals creates a complete barrier against rain, road spray and dust
- Air-Assisted Opening : Gas strut system provides smooth, effortless lid operation and holds lid open during loading
- Integrated Luggage Netting : Built-in flexible net secures items and prevents movement during transit
- Versatile Mounting : Standard brackets for Fiamma Carry-Bike racks or optional Wall Fit Kit for rear wall mounting
- UV-Resistant Finish : UV-protected construction prevents fading and material degradation from sunlight exposure
- Secure Locking System : Robust latches keep lid securely closed during travel and protect contents
- Deep Black Aesthetic : Sleek finish complements modern motorhome designs and provides professional appearance
Specifications
- Material Construction : ABS-PLUS with aluminium inner profile
- Seal Type : Water-tight foam seals with drainage channels
- Opening Mechanism : Air-assisted gas strut system
- Internal Organisation : Flexible luggage netting included
- UV Protection : Full UV-resistant coating on all exterior surfaces
- Mounting Brackets : Standard Carry-Bike brackets included (Wall Fit Kit sold separately)
- Maximum Load Capacity : Approximately 50kg (subject to vehicle payload limits)
- Certification : GS/TÜV approved construction
- Compatibility : Fits most Fiamma Carry-Bike rear-mounted racks and motorhome rear walls
Choosing your Ultra-Box
| Feature |
Ultra-Box 320 |
Ultra-Box 360 |
Ultra-Box 500 |
| Volume |
320 litres |
360 litres |
500 litres |
| Best suited for |
Compact campervans & shorter motorhomes |
Slimline storage, longer items |
Maximum capacity, family touring |
| External dimensions |
100 × 53 × 70 cm (W×D×H) |
147 × 38 × 70 cm (W×D×H) |
147 × 53 × 70 cm (W×D×H) |
| Internal dimensions |
88.5 × 46 × 62 cm |
133.5 × 30 × 58 cm |
133.5 × 46 × 62 cm |
| Weight (empty) |
12.0 kg |
14.0 kg |
17.0 kg |
| Profile depth |
Standard (53cm) |
Slim (38cm) |
Standard (53cm) |
| Length |
Compact (100cm) |
Extended (147cm) |
Extended (147cm) |
| Typical contents |
Boots, tools, small chairs |
Awning poles, fishing rods, long items |
Outdoor furniture, multiple luggage sets |
| Mounting compatibility |
Carry-Bike rack or wall mount |
Carry-Bike rack or wall mount |
Carry-Bike rack or wall mount |
| Material & construction |
ABS-PLUS with aluminium profile |
ABS-PLUS with aluminium profile |
ABS-PLUS with aluminium profile |
| Water-tight seals |
Yes |
Yes |
Yes |
| Air-assisted opening |
Yes |
Yes |
Yes |
| Integrated luggage net |
Yes |
Yes |
Yes |
| UV protection |
Yes |
Yes |
Yes |
Associated Products
Frequently Asked Questions
The Ultra-Box 320 (320 litres, 100cm wide) fits compact campervans and shorter motorhomes brilliantly where rear space is limited. The Ultra-Box 360 (360 litres, 147cm long x 38cm deep) offers a slimmer profile perfect for storing longer items like camping chairs or awning poles. The Ultra-Box 500 (500 litres, 147cm long x 53cm deep) provides maximum capacity for families or extended touring adventures, accommodating bulky items like outdoor furniture or multiple luggage sets. All models are 70cm high and fit most standard motorhome widths perfectly.
Yes, the Fiamma Ultra-Box fits directly onto your motorhome rear wall using the optional Wall Fit Kit (product code 98654-005), sold separately. This wall-mounting option is ideal if you don't carry bikes or prefer to keep your bike rack available for cycling adventures whilst still benefiting from additional rear storage. The Wall Fit Kit provides secure, permanent mounting that distributes weight safely across the vehicle structure. Standard supply includes mounting brackets for Carry-Bike installation only.
The Fiamma Ultra-Box features water-tight foam seals and clever co-extruded construction that creates an effective barrier against rain, road spray and splashes, keeping contents dry brilliantly during normal travelling conditions across the UK. The drainage channels and seal design prevent water pooling inside the box. For extended heavy rain or pressure washing, some moisture might eventually penetrate, so storing electronics or particularly water-sensitive items in dry bags provides additional protection during harsh weather touring.
The Fiamma Ultra-Box fits most rear-mounted Fiamma Carry-Bike models brilliantly including Carry-Bike Pro, Carry-Bike XL Pro, Carry-Bike Pro C, and various other Carry-Bike variants designed for motorhomes with single rear doors. The standard mounting brackets included with the Ultra-Box attach to the bike rack's support structure. The Ultra-Box is not suitable for bike racks with offset rails or for van conversions and campervans with double rear doors. Always check your specific rack model compatibility before purchasing to ensure a perfect fit for your touring setup.
The Fiamma Ultra-Box is designed to safely hold approximately 50kg of cargo, though the actual weight limit depends primarily on your motorhome's rear payload capacity and the mounting system used. When mounted on a Carry-Bike rack, you must consider the bike rack's own weight rating minus the weight of any bicycles carried. When wall-mounted, your motorhome's rear structure must support the combined weight of the box (12kg for 320L, 14kg for 360L, or 17kg for 500L) plus contents. Always check your vehicle's payload allowance and rear axle loading limits before your touring adventures.
Motorhome owners typically use the Fiamma Ultra-Box for items they don't want inside the living space but need regular access to at their pitch, including muddy walking boots, wet weather clothing, outdoor furniture like camping chairs and tables, awning accessories, tool kits, levelling ramps and chocks, external cleaning supplies, barbecue equipment, water and waste hoses, electric hook-up cables, bike helmets and accessories, fishing gear, or sports equipment. The brilliant weatherproof design makes it perfect for storing items that might be damp or dirty whilst keeping your motorhome interior clean and fresh.
The Fiamma Ultra-Box is available in both Deep Black and Polar White colour options, allowing you to choose a finish that complements your motorhome's exterior aesthetics perfectly. The Deep Black version provides a sleek, modern appearance that coordinates brilliantly with contemporary motorhome designs and darker vehicle colours. Both colour options feature the same high-quality ABS-PLUS construction with UV-resistant finish that prevents fading and degradation even after years of exposure to sunlight during your touring adventures. All specifications, features and mounting options remain identical across both colour variants.
The Fiamma Ultra-Box features gas strut mechanisms that provide air-assisted opening, making lid operation smooth and effortless. When you release the secure latches, the gas struts gently lift the lid without requiring excessive force, which is particularly useful when you have your hands full at your pitch or need quick access to items during stops. The clever system prevents the lid from slamming shut and holds it open at the full upright position whilst you load or unload contents. This assisted mechanism reduces strain and makes accessing the box remarkably easy for all users throughout your camping trips.
Fiamma Ultra-Box Rear 320
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(13 reviews)
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