Biggest Roof Cargo Boxes Available – A Guide

 It doesn't make any difference how enthusiastically we attempt, we generally have an excessive amount of stuff that we want to take when we disappear on vacation or head off on our next brandishing experience.


It doesn't fit in the vehicle, yet we "want" to take everything. Moreover, we really want to fit 5 individuals in our vehicle.


How would you deal with this? Reply: A freight box with masses of room.


The freight box can fit in the entirety of your sporting gear and your baggage. It sits pleasantly on the top of your vehicle, opening up space in the truck for significantly more things.


Likewise, it implies your travelers don't have to clutch anything during the excursion, so it will make your movements more secure.


In this article, we survey the greatest cargo boxes accessible so you can take all that you need alongside you on your next experience.

Biggest roof cargo boxes


#1 Thule Motion XT XXL Cargo Carrier

Thule Motion XT XXL Cargo CarrierThis spacious and stylish cargo box is easy to use and looks super sleek. This is available in 2 colors, with a ginormous 610L volume (or 22 cubic feet). The dual-sided opening makes your gear easily accessible. 


It may be huge, but it is easy to open/close irrespective of weather conditions with outer handles that are grip-friendly and supporting lid-lifters. It can carry a weight load of 75kg. 


With it being so big you might be concerned about access to your trunk. However, it sits slightly forward on your roof, so there is full trunk access with no risk of hitting your cargo box. Read also about Uranol.


Easy to open/close in all weather conditions

Grip friendly outer handles and supporting lid-lifters

Load capacity of 75 kg

Thule Motion XT Rooftop Cargo Carrier

Check the latest price on the Thule Motion XT XXL Cargo Carrier

#2 Thule Force Cargo Box, Black 21 Cubic feet

This is another winning product from Thule that looks great and performs well. But we have placed this at number 2 because of how you need to mount it. 


The cargo box needs you to open the mounting hardware first, then set the box on the roof bars centrally. It is a little more fiddly and requires more precision. However, installation still only took less than 5 minutes. And this was the only downside. 


The install was again totally tool-free, as the box does have a pre-installed quick-grip mounting system. The durable lid is a diamond-textured AeroSkin one. The aerodynamic shape allows the reduction of drag and reduced noise.


The big SecureLock ensures the box is closed securely. The dual-sided opening makes your gear easily accessible from either side of the vehicle.


Secure clicking mounting systems

Exclusive diamond-textured AeroSkin surface

Load capacity remaining about 110 lbs

#3 Yakima Carbonite Skybox

Yakima Carbonite SkyboxThis spectacular gigantic 21 cubic feet cargo box weighs a mega 75 lbs. It also has quite a low weight load capacity for its size, 28 kg. At 21 cubic feet in volume, the Thule models have much higher weight limits. 


The product also has a dual-sided opening, as well as a super latch for effortless opening and closing. It has a beautiful tapered exterior which reduces drag and noise. This product is mounted tool-free also. 


For the install, simply do the following:


Open the lid

Release the clamps

Loosen the thumbwheels

Position the cargo box on your roof rack crossbars

Slide it back so that the clamps engage the load bars

Tighten the thumbwheels

Then engage your lever clamps

Sound easy enough?  Once you have installed it, the cargo box should not slide about on the bars. If it does slip, open the cargo box and tighten the levers to secure it.


The price is comparable to the Thule, so why look at the Skybox? Well, we noticed that the cargo box has lid stiffeners which add to durability.


We also found that the mounting was more straightforward than the Thule, however, it still only took minutes. So there are some other plus points.


Tool-free installation

21 cubic feet

Load capacity 28 kg


#4 Modula Racks Travel Twin 650 Litre Roof Top Cargo Box Silver

Modula Racks Travel Twin 650 Litre Roof Top Cargo Box Silver

This cargo box has an internal capacity of 650 liters or nearly 23 cubic feet. It also comes with a 5 Year Warranty, which is assuring as it is a little more expensive than the previous products reviewed here. 


It will fit most aftermarket and factory roof-rack cross-bars including makes like Rhino-Rack, Modula, Thule, Sport-Rack, and Yakima. This big cargo box features many of the goodies you need in a cargo box. 


Let’s start with the dual-opening lid, which has a lock and allows loading from either side of your vehicle. Modular Rack also boasts their patented quick-release legs which make installation or removal quick and easy without the need for an additional person.


The unit opens and closes smoothly each time thanks to the premium hinge hardware. The durable, upgraded acrylic lid is tough. You can treat this with standard car care products, so your box looks new for many years.


3 Point Central Locking System

Load capacity of 650 liters

5 Year Warranty

Modula Racks Travel Twin 650 Litre Roof Top Cargo Box Silver

Check the latest price on the Modula Racks Travel Twin 650 Litre

#5 Marksign Truck Cargo Bag with Cargo Net

Marksign Truck Cargo Bag with Cargo NetSo strictly speaking, this is not a cargo box. However, with a capacity of 26 cubic feet, we could not ignore this mammoth option from Marksign. 


It measures 51 x 40 x 22 inches (or 130 x 100 x 55cm) and could possibly hold everything you might ever need during your travels. For those of you with trucks, this fits very nicely on any truck bed.


So that you can easily transport it, this product has four heavy-duty rubber handles. We looked through competing designs, and this product seemed a lot easier to handle. It is waterproof, and each bag comes equipped with a heavy-duty 4 feet x 6 feet’ bungee net to secure the bag on to your truck. 


The net stretches out to 8 feet x 12 feet, preventing your bag from blowing up as you are driving. Marksign also includes 12 strong metal carabiners to ensure secure tie-down.


To ensure water does not get in, the cargo bag is electrically welded from 500D tarpaulin without any tiny holes. The zipper is coated with vinyl. The seals have flaps that use velcro to close, so you are sure to keep the rain out. 


The material is UV resistant, so it will last over time. To add a little something extra, the cargo bag comes with extra drawstring bags for storage of the cargo bag and net.


This is the best big cargo bag for a truck. The price makes this cargo bag very attractive for those of you needing this extra space, however, be aware that the product is still patent pending.


Fits any truck size

Waterproof design (500D tarpaulin material)

Comes with heavy duty cargo net


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