10 Best Rv Cargo Carriers 2026 in the United States

The Thule Motion 3 XXL is a large rooftop cargo box offering 21 cubic feet of storage and a strong 165-pound weight capacity, making it suitable for carrying plenty of gear on your RV or vehicle roof. Its aluminum material ensures a sturdy yet relatively lightweight build, while the aerodynamic wing-shaped design helps reduce wind drag, which can help save on fuel during long trips.

Mounting is simple and secure with Thule’s PowerClick quick-mount system, which provides clear feedback when properly attached, so you don’t have to second guess if it’s safely fixed. The box also features a SlideLock system that automatically locks the lid and shows when it is securely closed, adding a good layer of security along with included locks. Opening and closing is easy with a wide handle designed for one-handed use, which is convenient when loading or unloading quickly.

This model is not water resistant, so it may not fully protect your cargo from heavy rain or harsh weather conditions. The size and weight of the box might require some care during installation and removal, especially for less physically strong users. Accessories like interior lighting and protective liners are available but sold separately. This cargo box is a strong option if you need a large, secure, and easy-to-use rooftop carrier and generally drive in fair weather or can take extra care during rain.

The Thule Motion 3 LTitan is a hard-shell rooftop cargo carrier designed for users needing extra storage space on their vehicles, such as RV owners or travelers. Its large size (80 x 37.35 x 18 inches) offers a generous volume of around 450 liters, making it suitable for carrying bulky gear or luggage. The aluminum material ensures a sturdy yet lightweight build, which contributes to durability and helps with fuel efficiency thanks to its aerodynamic, wing-shaped design with a forward-leaning nose that reduces wind drag.

Installation is straightforward and secure with the PowerClick quick-mount system, which uses a torque indicator to confirm proper fitting, so you can be confident it’s safely attached. The SlideLock system adds a layer of security by automatically locking the lid and showing when it’s closed properly, helping to protect your belongings. While it is water-resistant rather than fully waterproof, this should be sufficient for most weather conditions, especially with an optional protective cover available. The lid’s wide handle allows for easy one-hand operation, which is convenient when loading or unloading.

The package weight is relatively heavy at 29 kilograms, which might require some effort to lift onto the roof. Its water resistance may not fully protect contents in very heavy rain or submersion situations. This cargo carrier is a strong choice for those looking for a durable, secure, and aerodynamic roof box with easy installation, ideal for road trips and outdoor activities needing extra cargo space.

The Thule Motion 3 XL rooftop cargo carrier offers a large storage space with 18 cubic feet of volume, making it suitable for RV owners or travelers needing extra cargo room. Its dimensions are quite spacious (88" long by 18" wide and 39" high), providing ample capacity for bulky items. Made from aluminum, the carrier is strong and durable, which helps protect your gear during trips. It features a roof mount system with the PowerClick quick-mount, designed for easy and secure installation, even for users who prefer a straightforward setup.

The SlideLock system adds security by locking the lid separately from opening, with an indicator to confirm the box is properly closed, ensuring your belongings stay safe during transit. The wing-shaped, aerodynamic design helps reduce wind drag, potentially saving some fuel. Although this model is not water resistant, which means contents could get wet in heavy rain or snow unless additional protection is used, it has a sturdy lid with a wide handle for easy one-handed operation. The product does not specify an internal weight capacity, which is a consideration if you plan to carry very heavy items.

This carrier is a strong, user-friendly choice for those needing extra storage space on their roof, especially if durability and ease of mounting are priorities. For travel in wet weather, adding extra waterproof covers is recommended to protect your belongings.