Maximize your motorhome’s storage space with rugged rear storage boxes designed for exterior mounting. These boxes add organized capacity, weatherproofing, and convenient access for camping gear, tools, and recovery equipment. Below, five top options highlight durability, mounting versatility, and smart features to suit a wide range of RV setups.
| Product | Brand | Capacity | Key Feature |
|---|---|---|---|
| Flatline Van Co. Slim Van Rear Storage Box | Flatline | Over 3.25 cu ft | Slim profile with interior Molle panel and built-in shelf |
| Flatline Van Co. Rear Storage Box for FVCO Platforms | Flatline | 6 cu ft | Exterior and interior mounting options with locking latches |
| VEVOR ATV Rear Storage Box | VEVOR | 95 L | Waterproof, dustproof, and built-in backrest |
| BLACKHORSE-RACING 35in ATV/UTV Rear Aluminum Storage Box | BLACKHORSE-RACING | 35″ x 13″ x 7″ | Aluminum, weatherproof, vibration-minimizing lock |
| KEMIMOTO Rear Cargo Storage Box 150L | KEMIMOTO | 150 L | Dual locking, rubber seal, and durable mounting |
Flatline Slim Van Rear Storage Box
Flatline’s Slim Van Rear Storage Box is engineered for exterior mounting on vans and camper builds, adding more than 3.25 cubic feet of storage without compromising the vehicle’s profile. Its aluminum body is finished with a durable black powder coat, combining light weight with weather resistance. A bulb seal and natural gutter system help keep moisture out, while locking, adjustable compression latches secure contents. The box includes an integrated drain plug for transporting damp gear outside the vehicle. An internal built-in shelf and a top-door Molle panel provide organized storage options for gear, tools, and accessories. The lower door opens to 90 degrees, supported by a down-stay rod that also serves as a makeshift counter or work surface at camp. Adjustable gas struts and hinges promote smooth operation.
The design prioritizes exterior access and rugged use, ensuring long-term performance in outdoor environments. This model stands out for its combination of a slim silhouette and practical interior features, enabling drivers to reclaim interior space while keeping essential items within reach when parked or camped. A dedicated exterior accessory panel on both doors offers secure mounting points for additional equipment with standard 3/8″ hardware.
Flatline FVCO Rear Door Platform Box
Designed for Flatline Van Co’s FVCO rear door platforms, this locking storage box adds six cubic feet of exterior storage. It’s compatible with Promaster, Transit, and Sprinter configurations, and can mount to Owl B2 with the appropriate adapter brackets. The unit features locking weatherproof latches and an adjustable full-depth shelf to optimize organization. Its exterior and interior mounting options make it a flexible choice for campers seeking reliable, weather-resistant storage integrated with their rear platforms. The platform-enabled installation helps keep clutter away from the RV interior while maintaining quick access from the back of the vehicle.
Key benefits include expanded capacity for tools, hoses, recovery gear, and camping equipment, plus a secure locking system that protects contents when away from the van. The sturdy aluminum construction ensures reduced weight while delivering durability for long trips, and the included shelf helps renters or owners organize items by category for easier retrieval.
VEVOR ATV Rear Storage Box
The VEVOR ATV Rear Storage Box combines a 95L capacity with a padded backrest, creating a practical cargo and seating solution for ATVs and trailers that accommodate rear cargo boxes. Constructed from durable LLDPE, the box is waterproof, dustproof, and resistant to abrasion and scratches, ensuring protection for gear in a range of outdoor environments. The rotomolding process yields a robust, deformation-resistant shell, while the integrated padded backrest adds comfort for riders during long trips. This box is designed for versatility on ATVs, UTVs, and Can-Am vehicles, making it a solid option for adventure-ready RV setups that require weatherproof storage integrated with outdoor seating support.
What sets this option apart is its emphasis on weather protection and user comfort. The 95L capacity provides ample space for helmets, gloves, and maintenance tools, and the backrest adds practicality for passengers or caretakers who spend time outside the vehicle. The product’s rugged coating and a simple, secure closure system help keep contents dry and accessible regardless of terrain or weather.
BLACKHORSE-RACING 35-Inch Aluminum Rear Storage Box
This 35-inch aluminum storage box is designed to handle rugged outdoor use, with corrosion-resistant construction for long-term durability. The toolbox-style design includes a weatherproof, inflatable shock-absorber lock that minimizes vibration and protects contents during travel. Inside, non-slip pads and strategic vents help deter moisture ingress, supporting a dry storage environment for tools and gear. Its generous dimensions offer ample space for recovery equipment, hoses, and spare parts, while the aluminum build keeps weight manageable for RV or trailer mounting. The combination of protection against the elements and a robust locking mechanism makes it well-suited for motorhome exterior storage needs that see exposure to dust, rain, and debris.
Because installation requires securing the box to an exterior mounting surface, ensure compatibility with your RV’s roof rack or rear bumper system. The box’s hard-wearing materials and thoughtful interior features balance protection with practical organization for frequent outdoor use, travel, and campsite setups.
Garvee 30-Inch Black Steel Truck Bed Tool Box
The Garvee 30-inch Black Steel Truck Bed Tool Box offers a commercial-grade steel build with textured black powder coating for durability in extreme conditions. While primarily designed for truck beds, its footprint and rugged construction can suit exterior storage needs on motorhomes with compatible mounting surfaces. A quick-access open design enables fast tool retrieval, which is beneficial for roadside maintenance or quick gear swaps on a camping trip. A sturdy steel pneumatic helps the lid open smoothly to a 110-degree angle, providing safe, controlled access and reducing risk of pinched fingers during loading or unloading.
Users should note that this option emphasizes quick access and steel durability, with a design that may be heavier than all-plastic alternatives. It is best suited for RVs or trailers with appropriate mounting space and where frequent tool access is a priority. Padlock-ready for added security, the box can stay mounted as a permanent exterior storage solution for long trips or heavy-use scenarios.
Buying Guide: Key Purchase Considerations
When selecting motorhome rear storage boxes, consider these factors to match your travel style and vehicle configuration:
- Storage capacity and layout: Evaluate how much space you need and whether you prefer shelves, dividers, or built-in compartments to organize camping gear, tools, and spares.
- Mounting compatibility: Check rear door platforms, bumper mounts, or hitch-based installations to ensure the box fits your motorhome’s design. Some boxes are platform-specific or require adapters.
- Material and weight: Aluminum boxes offer corrosion resistance and lighter weight, while steel boxes excel in durability. Balance weight with your vehicle’s payload limits.
- Weatherproofing: Look for bulb seals, latches, drain plugs, and interiors with moisture barriers to protect contents against rain, dust, and humidity.
- Security: Locking latches or integrated locking mechanisms deter theft when you’re away from the vehicle.
- Ease of access: Hinges, gas struts, and door angles influence how quickly you can retrieve or store gear, especially in tight camping spaces.
- Interior flexibility: Some boxes offer shelves or Molle panels for modular gear mounting, enabling customized organization.
- Durability and warranty: Choose boxes with robust construction and check manufacturer warranties for long-term confidence on rugged trips.
In diverse motorhome setups, a combination of exterior storage boxes can maximize interior living space while preserving quick, organized access to essential gear. Consider how each box’s features align with your typical trips, climate, and the type of gear you most often carry.