9 Reliable Cargo Carriers for Storing Bulky Outdoor Gear on an RV Rear Bumper

Fitting bulky outdoor gear inside a compact RV or travel trailer quickly turns a relaxing road trip into a chaotic obstacle course. Utilizing the rear bumper for external storage is the ultimate way to reclaim valuable interior living space while keeping dirty, oversized equipment outside. Choosing the right rear-mounted cargo carrier ensures your generator, bikes, or extra gear arrive safely without compromising your rig’s structural integrity.

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Understanding RV Bumper Weight Capacity Limits

Most stock RV bumpers are made of thin-walled, continuous-weld steel and are not designed to support heavy loads bouncing down rough highways. A standard 4-inch square bumper often has a structural limit of just 100 to 150 pound-feet, which includes the weight of the carrier itself. Exceeding this rating can result in metal fatigue, cracked welds, or even the entire bumper tearing away from the frame rails.

To determine actual capacity, calculate the cumulative weight of the cargo carrier, the mounting adapter, and the gear being loaded. Dynamic force—the downward momentum generated when hitting bumps at speed—effectively doubles or triples the static weight of your cargo. If your bumper is thin or poorly supported, installing aftermarket bumper support brackets can reinforce the frame-to-bumper connection to safely handle external loads.

Steel Cargo Basket – Curt 18153 Basket Cargo Carrier

Open steel baskets serve as the workhorse of external storage, providing a rugged, abuse-tolerant platform for hauling heavy, odd-shaped items that can handle the elements. The Curt 18153 Basket Cargo Carrier is a premier choice due to its heavy-duty tubular steel construction, a high 500-pound capacity, and a shank that folds up when empty. The 6-inch high walls offer multiple tie-down points for securing bulky firewood, recovery gear, or muddy coolers.

However, steel is heavy, and this carrier adds roughly 70 pounds of deadweight to your bumper before you even load a single piece of gear. It also requires a 2-inch receiver, meaning you must convert your square bumper with a bolt-on receiver hitch adapter first.

Keep in mind that raw steel can rust if the powder coating gets scratched, requiring occasional paint touch-ups. * Dimensions: 60″ x 24″ x 6″ * Weight: 70 lbs * Best for: Budget-conscious travelers hauling rugged, weather-resistant gear on reinforced rigs. * Not for: Ultra-light travel trailers with unreinforced bumpers or users who struggle to lift heavy metal components.

Aluminum Cargo Carrier – MaxxHaul 70108 Carrier

For smaller rigs or lightweight travel trailers, saving weight at the bumper is critical to maintaining proper tongue weight and balance. The MaxxHaul 70108 Aluminum Cargo Carrier steps into this role, offering the same footprint as a steel basket but weighing in at just under 30 pounds. This dramatic weight reduction maximizes the remaining capacity of your bumper for actual cargo rather than carrier weight.

Crafted from corrosion-resistant aluminum with a heavy-duty steel under-support shank, this carrier holds up to 500 pounds when properly anchored. The open-slat floor makes it incredibly easy to wash down dirty gear, and the high reflector strips provide added visibility on dark highways.

Keep in mind that aluminum is more flexible than steel, meaning concentrated heavy loads like generators can bend the slats if not distributed evenly across the platform. * Dimensions: 49″ x 22.5″ x 4.7″ * Weight: 29.5 lbs * Best for: Light-duty RVs and campers looking to maximize cargo capacity without overloading their rear bumper. * Not for: Point-loaded heavy machinery or off-roaders who require high-impact structural rigidity.

Enclosed Cargo Box – Thule Transporter Combi Box

Keeping sensitive camping gear, luggage, or tools dry and secure from both the weather and opportunistic theft is a major challenge with open baskets. The Thule Transporter Combi Box acts as a weather-resistant, locking vault on the back of your RV, offering 13 cubic feet of dry storage space. Its integrated tilt-down design allows easy access to rear camper hatches or doors without removing the entire unit.

This heavy-duty, hard-shell container is built from impact-resistant materials and includes pre-installed taillights and a license plate holder to keep your rig street-legal. Security is a primary focus, featuring a robust locking mechanism that prevents the key from being removed unless the box is securely latched.

At over 150 pounds when fully loaded, this premium setup requires a sturdy Class II or III receiver and is best suited for motorhomes or larger trailers. * Capacity: 13 Cubic Feet / 150 lbs * Weight: 55 lbs (empty) * Best for: Full-time travelers needing secure, lockable, and weather-proof storage for high-value gear. * Not for: Budget setups, lightweight square bumpers, or those needing to haul oddly-shaped outdoor gear.

Heavy-Duty Cargo Basket – Yakima GearWarrior

Off-road travel trailers and overland rigs demand a higher standard of durability to withstand continuous vibrations and rough trail washboards. The Yakima GearWarrior is engineered specifically for abuse, featuring a heavy-duty, weather-resistant powder-coated steel construction. Its specialized design offers unmatched structural integrity, keeping gear stable when traveling over rocky terrain.

This basket is highly customizable, accepting Yakima’s vast array of brackets for securing recovery boards, jacks, and spare tires directly to the outer frame. The aerodynamically shaped front fairing minimizes wind drag, which is a rare but welcome feature for rear-mounted carriers exposed to turbulent airflow behind an RV.

Because of its premium construction, it carries a higher price tag than basic steel baskets and may require specialized adapters to mount onto standard bumper systems. * Dimensions: 44″ x 40″ x 6.5″ * Weight: 22 lbs * Best for: Overland RVers and off-grid campers who need a rugged, customizable gear-holding system. * Not for: RVers looking for a quick, cheap, or large-capacity horizontal platform to carry wide items like generators.

Folding Cargo Carrier – Mockins Steel Cargo Carrier

When parking in tight campsites or storing an RV for the winter, a protruding rear cargo carrier can make your rig too long for standard spaces. A folding cargo carrier solves this issue by allowing the platform to fold up 90 degrees against the back wall when empty. The Mockins Steel Cargo Carrier is a highly versatile option, featuring a smart folding shank that saves several feet of rig length at a moment’s notice.

This carrier comes as a complete package, including a heavy-duty cargo bag, a cargo net, and ratchet straps to keep your gear dry and secure. The heavy steel mesh floor prevents water and road debris from pooling under your cargo during long drives through inclement weather.

Users must check the clearance between their bumper and the folded carrier, as some rear-mounted spare tires or ladders can block the platform from folding completely vertical. * Dimensions: 60″ x 20″ x 6″ * Weight: 50 lbs (carrier only) * Best for: Campers who frequently navigate tight spaces, city parking, or RV parks with strict vehicle length limits. * Not for: Travel trailers with rear-mounted spare tires that lack the clearance to allow a vertical fold.

Swing-Away Cargo Carrier – StowAway Max Hitch Box

Accessing rear RV garages, toy hauler ramps, or camper van doors often requires unloading your entire cargo carrier first. A swing-away carrier solves this headache by pivoting out of the way on a heavy-duty arm, offering complete rear access while fully loaded. The StowAway Max Hitch Box is the gold standard for this design, offering a massive 16 cubic feet of rugged, molded cargo space on a robust frame.

Built from a tough, automotive-grade polymer that won’t rust or dent, this cargo box keeps your equipment protected with a thick weather seal and a locking latch. The swingaway frame locks open at 90 degrees, ensuring the box doesn’t swing back and damage your vehicle during loading.

The primary trade-off is weight and cost, as the heavy-duty swinging arm and high-end box require a Class III receiver and represent a significant investment. * Capacity: 16 Cubic Feet / 200 lbs * Weight: 99 lbs (total system weight) * Best for: Class B and C motorhomes, van conversions, or toy haulers requiring constant, unhindered access to rear doors. * Not for: Ultralight bumper mounts or budget-oriented travelers.

Hard-Shell Cargo Box – Yakima EXO GearLocker

For those who value modular systems, a hard-shell box that can easily swap with bike racks or camp kitchens is a game-changer. The Yakima EXO GearLocker is a premium cargo box designed specifically to mount onto the revolutionary Yakima EXO system base. This allows you to stack cargo boxes, add bike racks, or swap gear configurations in seconds without tools.

Built with a rugged, top-tier plastic shell, this box offers 10 cubic feet of highly secure, weather-resistant storage that locks directly to the EXO frame. The wide top-opening lid makes loading bulky items like sleeping bags, tents, and camp chairs incredibly simple.

Be aware that this locker requires the purchase of the proprietary Yakima EXO SwingBase first, making the initial system investment quite high. * Capacity: 10 Cubic Feet / 100 lbs (on EXO base) * Weight: 28 lbs (box only) * Best for: Gear-heavy campers who want a premium, modular system that can adapt to different outdoor activities. * Not for: Simple bumper mounts or budget setups that don’t need multi-sport modularity.

Compact Cargo Carrier – Stromberg Carlson CC-100

Not every traveler needs a giant 5-foot tray hanging off the back of their rig to haul a few extra items. A compact carrier keeps the weight closer to the bumper, reducing leverage and maintaining better vehicle dynamics. The Stromberg Carlson CC-100 Cargo Carrier is a smaller, highly efficient steel basket designed for carrying modest, essential gear loads.

Its steel-mesh construction allows debris to fall through, and the smaller footprint reduces the likelihood of scraping when negotiating steep driveways or off-road obstacles. This compact size makes it highly manageable to install or remove by a single person without strain.

Because of its limited surface area, it cannot accommodate oversized coolers or multiple large storage tubs, requiring careful planning when packing. * Dimensions: 48″ x 20″ x 3″ * Weight: 28 lbs * Best for: Solo travelers, couples, or small travel trailers hauling compact gear like gas cans, firewood, or small coolers. * Not for: Large families or those needing to transport multiple oversized items simultaneously.

Generator Cargo Tray – Stromberg Carlson CC-125

Portable generators are essential for off-grid RVing but are notoriously smelly, noisy, and heavy, making them poor candidates for indoor storage. A specialized generator tray provides a secure, vibration-dampening platform designed specifically to handle the concentrated weight of heavy engines. The Stromberg Carlson CC-125 Generator Tray is engineered to mount directly over your A-frame tongue or on a reinforced rear bumper, keeping hazardous fuel fumes outside.

Built with high-strength steel, this tray features pre-punched tie-down points to securely strap down heavy machinery during transit. The low-profile lip makes lifting heavy generators onto the tray easier, reducing the risk of back strain during setup.

When mounting a generator, always use a heavy-duty locking cable to deter theft, as generators are high-value targets for thieves in remote campsites. * Dimensions: 30″ x 40″ * Weight Capacity: Up to 300 lbs (depending on mount location) * Best for: Boondockers and off-grid travelers who need to run and transport heavy generators safely. * Not for: Storing soft, weather-sensitive gear without a secondary waterproof box.

How to Prevent RV Cargo Carrier Wobble and Sway

A loose hitch connection turns your cargo carrier into a dangerous pendulum, causing severe wobble and sway that can damage your bumper welds over time. Standard hitch pins leave too much tolerance inside the receiver sleeve, allowing the carrier to rock side-to-side with every turn. Installing a hitch tightener clamp (often called an anti-wobble bracket) is the most effective way to eliminate this unwanted play.

These simple, inexpensive U-bolt clamps pull the carrier shank tight against the inner walls of the receiver, locking it solidly in place. Additionally, running ratchet straps from the outer corners of the cargo basket directly to the RV frame creates a triangulation system that stops swaying entirely. Taking these preventative steps not only protects your gear but also prevents metal fatigue on your camper’s chassis.

Essential Safety Tips for Packing Rear-Mounted Gear

Proper weight distribution is the key to maintaining vehicle stability and preventing dangerous trailer sway on the highway. Always place your heaviest items closest to the bumper and centered on the carrier to reduce leverage and rotational force. Securing your load with high-quality, weather-rated ratchet straps is mandatory, as elastic bungee cords can stretch and fail under highway-speed winds.

Ensure your rear license plate and taillights remain fully visible to other motorists and law enforcement after the carrier is loaded. If your gear blocks your RV’s factory lights, install an auxiliary LED light kit to prevent accidents and avoid costly traffic citations. Finally, routinely check your bumper welds and receiver bolts at every fuel stop, as road vibrations can loosen hardware over long distances.

Reclaiming your RV’s interior living space is easily achieved by selecting the right bumper-mounted cargo carrier for your travel style. By respecting weight limits, securing your load properly, and eliminating hitch wobble, you can travel with confidence knowing your gear is safe and secure. Match your carrier to your specific storage needs and head out on your next off-grid adventure with peace of mind.