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Biggest Roof Cargo Boxes

Are you planning a road trip and need extra storage space for your luggage? Or perhaps you’re an outdoor enthusiast looking for a way to transport your gear? Whatever your needs, a roof cargo box can provide the solution. In this guide, we’ll explore some of the largest roof top cargo boxes available on the market.

What is a Roof Cargo Box?

A roof cargo box, also known as a roof box or cargo carrier, is a storage container that can be mounted on the roof of your car. They come in various sizes, with the biggest roof box for car offering up to 22 cubic feet of additional storage space.

Many cars have limited cargo space, but these big roof cargo boxes provide enough room for all your belongings, even when travelling with children, pets, or camping gear.

Building a rooftop cargo box may be necessary to improve storage capacity, which is more cost-effective than replacing the vehicle.

A rooftop cargo carrier can ease visit flood troubles while pressing for a camping get-away, cross-country outings, or migration for drivers who require more storage than a vehicle’s insides can give. 

Both hard-shelled cargo and delicate rooftop sacks are outlined to keep cargo secure from intrusive thieves while securing things from cruel climate and street rottenness.

When not in use, a soft rooftop cargo carrier is lighter in weight, easier to mount to a vehicle’s roof, and can be rapidly stowed. 

Simple tie-down systems with adjustable straps, robust hooks, and zippered pockets can be loaded on top of even a naked roof without the use of rack systems. Many soft cargo carriers have watertight seams that are welded or taped.

A difficult rooftop cargo carrier, too known as a roof cargo box, requires crossbars and a roof rack framework. Although they are more costly and troublesome to utilize, they give more noteworthy security for high-value things such as skis, snowboards, or other open-air gear utilized for camping or bicycling. 

The vigorous outside shells do not have a chance of being broken by pressing products with sharp edges or elliptical shapes since most contain locking mechanisms.

Soft roof packs are lighter, less demanding to stack and store, and do not require crossbars, but they’re constrained in what they can safely carry, and indeed even though numerous of the best-rated items are made of strong and weatherproof materials, they can still break or drop separated at the creases. 

Roof boxes are heavier and require extra hardware, influencing the execution of a vehicle. Both assortments have a strong plan that will decrease fuel economy. A few roof boxes are outlined to be more aerodynamic.

The Best Biggest Roof Cargo Boxes Compared

When it comes to choosing the best large roof box, there are several factors to consider, including the size, design, material, and ease of installation. Here are some of our top picks:

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Why Choose a Large Roof Cargo Box?

A big cargo box offers several advantages. Firstly, it provides ample storage space, allowing you to carry more luggage, gear, or equipment. Secondly, by storing items on the roof, you can free up space inside your vehicle, making your journey more comfortable.

Here are some of the Biggest Roof Cargo Boxes on the market for your consideration

Sport Rack Vista XL Rear Opening Cargo Box – Best Roof Cargo Box

The Sport Rack Vista XL Raise Opening Cargo Box is one of the largest roof cargo box on the market. It has an 18-cubic-foot capacity and fits square, circular, and most plant roof racks.

With tool-free mounting options, the sport Rack Vista XL may be reached from either side or the back of a car, making it simple to grab items from a variety of positions.

The sport Rack Vista XL is UV-resistant and long-lasting, thanks to its ABS structure. The Sport Rack Vista XL is 63 inches long, 38 inches wide, and 19 inches tall, and it can hold up to 100 pounds of baggage.

Thule Pulse Medium Rooftop Cargo Box

The Thule Pulse Medium is a 67-inch long, 33-inch wide, and 16-inch-high rooftop freight carrier that can be opened with one hand for quick loading and unloading.

The addition of a central locking system improves security. This unit contains 14 cubic feet of storage for snow-filled activities and can fit a few sets of skis (up to 155 cm) or three to four snowboards.

Thule Force XT Rooftop Cargo Box

This versatile roof-mounted cargo box is made from a durable finish and can hold up to 165 pounds.

The Thule Force XT is designed to fit a wide array of vehicles. Its clever quick-mount system clicks into place when the box is secure and tightened, ensuring a proper fit.

A dual-sided lockable compartment also allows for security and easy unloading when needed. The 18-cubic-foot Thule Force XT can hold up to five to seven pairs of skis or three to four snowboards.

If the high-end Motion doesn’t pique your interest, you must choose between the Force XT and the Yakima Skybox.

Both models reflect the ideal middle ground for many users, although we give the Yakima a slight advantage for a few minor reasons.

To begin with, we love its latching design, which has a wide handle that opens and closes the box independently of the locking mechanism.

Sport Rack Horizon Alpine Cargo Box

This rooftop cargo carrier is made of impact-resistant ABS material and fits square, round, and most factory racks. This is one of the best roof boxes for camping. You’ll love its convenience when you go camping with it.

It includes a centralized locking mechanism and a passenger-side aperture for cargo access that doesn’t obstruct traffic. 

The sport Rack Horizon Alpine Luggage Box can store five to six pairs of skis (up to 180 cm) or three to four snowboards while carrying other cargo or camping supplies.

Fivklemnz Car Roof Bag Cargo Carrier

The Fivklemnz 15-cubic-foot roof bag has an anti-slip surface and adjustable straps to hold the carrier in place without harming the car. 

The Fivklemnz soft rooftop cargo carrier is a best-seller in the marketplace, accommodating everything from multiple suitcases to a full camp setup with sleeping bags and a tent. 

This device is under seven pounds in weight and expands to almost a foot in height. It measures 43 inches in length and 33 inches in width.

Cargo Carrier Thule Motion XT XXL

For large loads, Motion XT XXL is the best option. It has a storage capacity of 22 cubic feet and a total load capacity of 165 pounds.

It also comes with the Power Click quick-mounting mechanism, which makes installation simple and secure.

The Motion XT XXL stands out with a professional fit, finish, and two-color options.

Thule Force Cargo Box

Thule Force is one of the best cargo boxes currently on the market. This carrier comes in various sizes, ranging from 13 to over 21 cubic feet.

The product boasts impressive features such as a dual-sided opening, easy installation, and a built-in lock for security.

It can also be put on any roof rack, regardless of manufacturer.

Carbonite Skybox by Yakima

The Carbonite Skybox by Yakima is among the biggest roof box family. It has a volume of 21 cubic feet, a load capacity of 28 kilograms, a dual-sided opening, and a super latch system.

Its most appealing characteristic is that it can be installed without the use of any equipment, making it extremely user-friendly.

It has a long, streamlined form with an aerodynamic element that reduces wind noise and drag. The box also has a locking cover to keep it safe from theft.

We must admit that we were undecided when it came to selecting our favorite rooftop cargo box. With a high-end fit and quality, very easy-to-use mounting hardware, and a Slide lock handle and lock mechanism that’s hard to better, the Motion XT is undoubtedly the “best” all-rounder.

However, not every user requires the greatest, especially when “very good” can suffice for far less. And therefore, we see the Yakima Skybox on more rooftops than any other carrier: for $599 for the 16-cubic-foot model ($649 for the 18-cubic-foot model), you get robust storage for your goods as well as a tool-free installation that works with most factory and aftermarket racks.

There’s a Skybox for everyone, with sizes ranging from 12 to 21 cubic feet and options including a low-clearance (“Lo”) model and a compact “12” that allows enough room on your rack for a bike or boat. 

Both the Motion XT and the Skybox are made to survive the rigors of the road, with tough ABS plastic and aerodynamic forms that taper at the back to fit your car’s antenna and hatch.

However, details count, and the Yakima falls short here. The turn handle requires a touch more energy than the Thule’s and isn’t as simple to operate with only one hand (it also tends to get stuck when frozen).

RoofPax Car Roof Bag and Rooftop Cargo Carrier

The RoofPax soft rooftop cargo carrier is big roof box than others and is amongst the best cargo box with a capacity of 19 cubic feet.

It’s tough and has dual-seam technology and waterproof double zippers.

It also has a double water-repellent coating, making it a watertight load carrier.

It also comes with a lifetime warranty on buckles and zippers and can be used with or without roof rails.

It has a protective pad built-in and ten elastic Velcro straps. It grows to about 20 inches in height when filled to capacity. It has a 47.2-inch long and 35.4-inch-wide footprint.

A smaller 15 cubic-foot bag extends to the same height but has a smaller footprint (43.3 inches long and 33.5 inches wide).

INNO BRM660BK Wedge Cargo Box

If you park in a garage or in enclosed parking lots frequently, you should think hard about getting a rooftop box. 

Many of these versions add nearly two feet to the height of your car’s roof (including the height of the box and the rack), which is a no-no for SUVs and vans.

The good news is that those who need to keep a low profile have a range of options. The INNO BRM660BK Wedge Cargo Box is one of the best-looking wedges in the category, with a contoured shape that provides 11 inches of depth while only rising 9.6 inches above your rack’s crossbars.

The Wedge has more to offer than just clearance: it features a high fit and finishes, with tool-free installation, a beautiful and aerodynamic form that reduces wind noise while accommodating a rear antenna and door, and a dual-sided opening that improves access and organization.

The INNO is the most low-profile rooftop box on the market, but a few versions come close behind. The Thule Pulse Alpine (also 11 cu. ft.) rises 11.3 inches off the crossbars (almost 1.5 inches higher than the Wedge 660) and only opens on the passenger side, but it costs $500 less.

Marksign Truck Cargo Bag with Cargo Net

So, technically, this isn’t a cargo crate. However, with a capacity of 26 cubic feet, we couldn’t pass up Marksign’s colossal alternative.

It measures 51 x 40 x 22 inches (130 x 100 x 55cm) and has enough room to contain everything you’ll need on your trip. This fits neatly on any vehicle bed for those of you with trucks.

This product contains four heavy-duty rubber handles to make it easy to move. We looked at several designs and found this one to be a lot easier to work with. 

It’s waterproof, and each bag comes with a heavy-duty 4′ x 6′ bungee net to keep the bag tight on your truck.

The net measures 8 feet by 12 feet and keeps your bag from blowing up while you’re driving. To provide a solid tie-down, Marksign contains 12 robust metal carabiners. 

The cargo bag is electrically welded from 500D tarpaulin without any microscopic holes to keep water out. Vinyl is used to coat the zipper.

The seals include velcro-closed flaps, so you can be sure to keep the rain out. Because the material is UV-resistant, it will last for a long period. 

The cargo bag comes with extra drawstring bags for storage of the cargo bag and net as a bonus.

Biggest Roof Rack vs. Largest Capacity Roof Box

While the biggest roof rack provides a platform for carrying various items, the largest capacity roof box offers enclosed storage space, protecting your belongings from the elements, the choice between the two depends on your specific needs and preferences.

How to Choose the Biggest Roof Cargo Box

Compatibility with Roof Length

If you have a top-hinged trunk, it’s critical that the box fits smoothly with the roof and rack of your vehicle. To begin, move the front crossbar forward as far as possible (some are not adjustable). Then open the hatch and take a measurement from the back hatch to the middle of the front crossbar of the vehicle.

That distance must be greater than the cargo box’s hatch clearance, as indicated on the manufacturer’s website. You’ll also want to make sure the length doesn’t obstruct visibility or interfere with any antennae in the front.

Setup of the Rack

This is rack 101 if you’ve never had a rooftop setup before. The mount is a component that mounts to the top of your vehicle and runs lengthwise (front to back). Vehicles typically have factory mounts such as raised rails, tracks, or permanent points.

If you’re working with a blank roof, you can either install a rack permanently or choose a system that works with the door jamb. 

Two crossbars or load bars are attached to the mount through four appropriate towers and are perpendicular to the roof. Crossbars come in a variety of sizes and shapes.

Each cargo box requires unique crossbars, so check to see if those crossbars are suitable with your vehicle and mount or if an adapter is needed.

Carrying Capacity & Purpose

Look at your gear before you go shopping for a rooftop cargo box. What do you need and plan to bring on your trips? Camp chairs and sleeping bags, for example, are typically shorter or packable and fit nicely in rooftop cargo bins.

For example, skis, paddles, golf clubs, and strollers will require a larger box; ensure the boxes’ inside dimensions match the length of your equipment.

To help visualize the entire volume, read the width and height of each box. The cubic-foot gear capacity is also listed on the boxes (or inches or litres). The larger your group is, the more space you’ll need for everyone’s gear.


There are two weight factors to consider: the cargo box weight and the box’s weight capacity. Without any cargo, the weight of the cargo crates shown below ranges from 20 to 66 pounds. The bulk of these carriers can comfortably carry up to 165 pounds. However, some can only carry around 110 or even 50 pounds.

If you need to move bigger objects, don’t skimp on the cargo box’s structural integrity. Stow your heaviest items inside the vehicle, such as a fully loaded cooler, is easier and safer. Weight limits for each box should be checked with the manufacturer. Check your vehicle’s owner’s manual for the suggested maximum load as well.

Cargo boxes are made of tough plastic, and a few features extra reinforcements, such as the steel around the bottom of the Thule Vector. 

Others have an extra layer of protection to increase their durability and weather resistance. The Pelican BX140R Cargo Case, for example, has a corrosion-resistant coating.

The quality of the hardware, such as latches and lock systems, varies, which is reflected in the price. Overall, the weight of the box is influenced by its size and materials.

Resistant to Water

Due to a waterproof exterior and weather sealing, most rooftop cargo box designs are quite weather-resistant, and they’ll generally perform a good job of blocking snow and rain.

None of these cargo crates, on the other hand, claim to be entirely watertight. Any water-sensitive or valuable cargo should be stored in a dry bag or within the rig.

Optional Extras

Extra features for comfort, practicality, and ease of use are included in a few of the top-shelf designs. For example, we like the Thule Vector’s inside LED lights and the Yakima CBX Solar’s integrated solar panel with two USB connections.

Frequently asked questions

What is the biggest roof cargo box available in the market?

The size of roof cargo boxes can vary, but some of the biggest on the market can offer up to 22 cubic feet of storage space. Brands like Thule and Yakima offer some of the largest models.

Why are roof cargo boxes so expensive?

The cost of roof cargo boxes can be attributed to the materials used, the design, and the brand. They are typically made from high-quality, durable materials to withstand various weather conditions and protect your belongings. The design and engineering of these boxes also contribute to their cost.

Are roof cargo boxes worth the investment?

Yes, roof cargo boxes are generally worth the investment, especially for those who frequently travel or need extra storage space. They provide a secure and convenient way to transport your belongings without taking up interior space in your vehicle.

What is the largest capacity roof box I can buy?

The largest roof boxes can offer up to 22 cubic feet of storage space. However, it’s important to check the weight limit of your vehicle’s roof before purchasing a large roof box.

Are roof cargo boxes safe for long-distance travel?

Yes, as long as they are properly installed and secured, roof cargo boxes are safe for long-distance travel. It’s important to regularly check the box and its mounts during your trip to ensure everything is still secure.

Can I find a large roof cargo box for my specific car model?

Most roof cargo boxes are designed to fit a variety of roof racks. However, it’s always a good idea to check the specifications and compatibility before purchasing.

Where can I buy the biggest roof cargo box near me?

You can buy roof cargo boxes from various sources including auto parts stores, outdoor recreation stores, and online marketplaces like Amazon. Always check the dimensions to ensure you’re getting the size you need.

Are there any rental services for roof top cargo boxes?

Yes, some outdoor recreation stores and auto equipment rental services offer roof cargo boxes for rent. This can be a cost-effective option if you only need the extra storage space occasionally.

What is the largest Thule cargo box available?

The Thule Motion XT XXL is one of the largest Thule cargo boxes available, offering 22 cubic feet of storage space.

Are roof cargo boxes universal, or do I need a specific one for my car?

Most roof cargo boxes are designed to fit a variety of roof racks. However, it’s important to check the product specifications for any potential limitations.

Can I use a roof cargo box in any weather conditions?

Roof cargo boxes are designed to be weather-resistant, protecting your belongings from rain, snow, and sun. However, in extreme weather conditions, it’s always a good idea to check your manufacturer’s guidelines.

How do I install a roof top cargo box on my car?

Installation can vary by model, but generally, you’ll need to secure the box to your car’s roof rack with the provided mounts and hardware. Always check the manufacturer’s instructions for specific installation steps.

What should I consider when choosing a roof cargo box for my car?

Consider factors like size, shape, capacity, ease of installation, and the type of items you plan to transport. Also, consider the box’s impact on fuel efficiency and whether it will fit in your garage or parking space.

How do I maintain and clean my roof cargo box?

To maintain your roof cargo box, clean it regularly with mild soap and water. Check the locks and hinges for any signs of wear or damage. When not in use, store it in a cool, dry place to prevent any damage.

Can I store my roof cargo box when it’s not in use?

Yes, most roof cargo boxes are designed for easy removal and storage when not in use. Some even come with a protective cover for storage. Just be sure to clean and dry it before storing to prevent any damage.

Last update on 2024-04-22 / Affiliate links / Images from Amazon Product Advertising API

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