Whenever we go on trips or a holiday adventure, we always want to take more stuff. Moreover, we also need to fit five people in our vehicle. Despite our trying hard, we can’t take all the things that we need. Using a cargo box, we can keep all of our stuff in the car.
If you are in a hurry, then you can use the links below to buy the Biggest Roof Box for your car. You don’t need to worry about the quality of the products because we only recommend the best.
– Best Overall – Thule Motion XT Rooftop Cargo Box
– Best Wide Range Options – Modula Racks Travel Twin 650 Litre
– Best Carrier for Pickup Trucks – MARKSIGN Truck Cargo Bag
All your stuff and your luggage can fit in a roof box. You can accommodate a roof box nicely on the roof of your car. By setting up a roof box, you can get more space to keep your stuff. Also, if you set up a roof box, you don’t need to keep anything in the passenger seat during the journey. So you will be able to drive without any anxiety.
We are going to review the top 5 biggest rooftop boxes available in this article to help you to choose the perfect roof box for you. So, you can take anything you need on your next adventurous trip.
The 5 Biggest Roof Box Available:
1. Thule Motion XT XXL Cargo Box:
This stylish roof box is very easily usable and looks so aesthetic. It is available in 2 colors and a massive volume of 610L or 22 cubic feet. The dual-sided opening of this Thule Motion XT can give you access more easily.
Despite being huge, it is very user-friendly and straightforward to open or close for its grip-friendly lid-lifter in unfavorable weather conditions. The weight limit for this roof box is 75kg.
Because of its immense size, you might be worried about access to your car’s trunk. But you don’t have to worry because it sits slightly ahead on the roof of your vehicle, so you can get the full trunk access without hitting your roof box.
Some important features of Thule Motion XT XXL:
- Easy to open/close in all weather conditions.
- Grip-friendly outer handles and supporting lid-lifters.
- The load capacity of 75 kg.
- Oversized roof-mounted cargo box provides 22 cubic feet of additional packing space
- Designed for optimal space efficiency, aerodynamics, and vehicle fit
- Quick-mount system "clicks" when roof box is secure and properly mounted
- Dual-side opening for quick access from either side of the car
- Easy to open and close with grip-friendly handles and supporting lid-lifters
- Full trunk access and no roof box contact
- Lid automatically locks in place and indicates a secure closure (One Key System compatible)
- Fits 5-7 pairs of skis / 3-5 snowboards
- External dimensions: 91.5 x 37.5 x 18 inches; Internal dimensions: 84.5 x 33 x 16 inches
- Load capacity: 165 lbs; Product Weight: 55 lbs
2. Thule Force Cargo Box:
This sleek roof box is another product from Thule. Despite looking great, the performance is good also. But we kept this at number 2 because of its mounting system.
To install it on the roof of your vehicle, you need to open the mounting tools first. Then you have to set the box in the center of the roof bars. The installation process is a little trickier, and you have to work correctly. Still, the installation process only took less than 5 minutes.
The Thule Force Cargo Box is available with a pre-installed quick-grip mounting system. So the installation process for this roof box is tool-free. The lid is very durable and functional with a diamond-textured finish. Its aerodynamic shape is conducive to reducing drag and resist air.
The Thule Force Cargo Box is available with a big SecureLock, which ensures the security of the box. Moreover, it is also available with a dual-sided opening. So you can get access to this roof box quickly.
Some important features of the Thule Force Cargo Box:
- Secure clicking mounting systems
- Exclusive diamond-textured AeroSkin surface
- Load capacity remaining about 110 lbs.
- Diamond-Textured AeroSkin Lid is durable and the aerodynamic shape helps cut through the air
- Tool-Free Quick-Grip Mounting system attaches box to rack in less than 5 minutes
- Oversized SecureLock ensures the box is closed securely
- Dual-Side Opening for loading/unloading from either side of the vehicle
- Height off crossbar: 15.4 inches. Fits Thule AeroBlade and Thule SquareBar. One Key System compatible
3. Yakima Skybox Carbonite Cargo Box:
This magnificent large 21 cubic feet roof box weighs 75 lbs. It can carry only 28 kg because of its size. At the 21 cubic feet volume range, the other Thule roof boxes can carry more weight.
The Yakima Skybox can also give you access from the dual side, and it is available with a super latch, which makes the opening and closing easier. The tapered exterior of this roof box is stunning. And it can reduce drag. You can install it without any tools.
To install it, You have to follow the following steps only:
- Open the lid
- Release the clamps
- Loosen the thumbwheels
- Position the roof 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.
That’s it! After completing these steps now, your Yakima Skybox Carbonite is correctly installed on the roof of your vehicle, and it will not slide down from your roof bars. If it does slip, open the lid of your roof box and tighten the levers to secure it.
The price of this roof box is as like the Thule. Now you can ask us why you should buy the Skybox? Then the answer is – It is available with lid stiffeners, which makes it much more durable than the Thule. Moreover, the installation process for this roof box is more comfortable than the Thule also. It only takes minutes.
Some important features of Yakima Skybox:
- Tool-free installation
- 21 cubic feet
- Load capacity 28 kg
- More Room for Cargo Space: Provides generous 16 cubic feet of secure storage for all your family's gear, perfect for road trips, camping, and outdoor excursions.
- Dual-Sided Access for Convenience: Unique dual-sided opening design allows easy loading and unloading from either side of your vehicle.
- Enhanced Security: Integrated push-button security and SKS locks keep your belongings safe and secure on the road.
- Durable Build: Lid designed with internal stiffeners for durability and easy open and close, and a sleek Carbonite texture for aerodynamics.
- Take It Easy: Since 1979, Yakima has worked to simplify the way people travel and transport recreational sporting equipment. We put safety, sensibility, and street smarts into every product design.
4. Modula Racks Travel Twin 650 Litres:
This roof box is available with an internal capacity of nearly 23 cubic feet or 650 liters. It comes with a 5 Year Warranty, so it is a little more costly than the previous roof boxes we reviewed here.
The Modula Racks Travel Twin 650 Litres can be fitted with most aftermarket roof-racks, including Rhino-Rack, Modula, Thule, Sport-Rack, and Yakima. This big roof box is available with excellent features.
This Modula Racks Travel Twin 650 Litres is also able to give access from the dual side. The lid of this roof box has a lock and allows you to load stuff in it from each side of your vehicle. With the Modular Rack, you can install or remove it from the roof of your car very quickly and without anyone’s help.
With the help of the premium hinge hardware, the opening and closing of this roof box are very smooth. The lid of this roof box is made of acrylic, and it is very durable.
Some important features of Modula Racks Travel Twin 650 Litres:
- 3 Point Central Locking System
- The load capacity of 650 litres
- 5 Year Warranty
- 5 Year Warranty
- Patented Quick Release Tool-Free Leg
- Dual Side Opening
- 3 Point Central Locking System
- Fits most factory and aftermarket roof-rack cross-bars. Including: Modula, Rhino-Rack, Yakima, Thule, Sport-Rack
5. Marksign Truck Bag:
From the name, you can say that this is not a roof box. This Marksign truck bag & net is available with a capacity of 26 cubic feet so it can be a better option for you. It can carry all of your needy stuff. If you have a truck, then it can be a better option for you because it fits with the trunk bed very nicely.
The Marksign truck bag is very user-friendly, and this trunk bag has four heavy-duty rubber handles. After comparing this roof net with others, we found that it is easier to handle. Moreover, it is waterproof, and it comes with four robust 4 feet x 6 feet bungee nets to secure the bag onto your truck.
You can stretch this net out to 8 feet x 12 feet. It also comes with 12 strong metal carabiners to ensure secure tie-down. This trunk bag is electrically welded from 500D tarpaulin to prevent any water leakage, and the zipper is vinyl coated. The seals use Velcro to close, so you don’t have to worry about water leakage during wet weather conditions.
The material used in making this trunk bag is UV resistant, so it is very durable. To keep it when you don’t have to use it, the trunk bag comes with an extra drawstring bag. Marksign Trunk bag is the best large trunk bag for a truck, and it is beautiful also. The price of this trunk bag is value for money. Everything is good, but one thing – you have to be aware the product is still patent pending.
Some important features of Marksign truck bag:
- Fits any truck size
- Waterproof design (500D tarpaulin material)
- Comes with strong cargo net
- SPACIOUS STORAGE ROOM: Measures 51x40x22 inches (130x100x55cm) and 26 cubic feet, the cargo bag can hold everything of a family of 5-6 people. Fits any truck beds.
- 4 HANDLES FOR EASY TRANSPORTING: 4 heavy duty handles make loading and unloading much easier than competing designs.
- HEAVY DUTY CARGO NET INCLUDED: Each bag comes with a heavy duty 4'x 6' bungee net stretches to 8'x12' to keep the cargo bag firmly in place, preventing it from blowing up when you are driving. 12 strong metal carbiners are also included for easy and secure tie-down.
- 100% WATERPROOF DESIGN: The whole cargo bag is electrically welded from 500D tarpaulin without any needle holes. Vinyl coated #10 zipper and Velcro closed rain flap firmly seal rain out. The fabric is also UV resistant to last for years to come.
- STORAGE BAG INCLUDED: Extra drawstring bags for the cargo bag and cargo net are also included for easy storage.
Conclusion:
The given roof boxes are the best to provide you with enough space for all of your needs. You have to think about the weather conditions in which you will use it and how easily you can install and uninstall it. Also, you have to think about the weight limit you are going to carry with it.
Always check the weight limit of your roof rack and your car roof. Because if you overload it, then the effect can be harmful to your car; it can damage your vehicle.
–our editorial board has reviewed this article and has been approved for publication according to our editorial policy.
Best Seller List of Roof Cargo Boxes:
- 18 cubic foot (510 L) internal cargo capacity
- Made from durable UV-resistant ABS material
- Rear opening for easy access away from traffic
- Tool-free mounting hardware for easy installation and removal
- Includes key and lock to secure contents in the box, and the box to your rack
- Fits SportRack Rack Systems, square bars, round bars and most factory racks (check fit guide)
- Dimensions (LxWxH): 63 x 38 x 19 in / 160 x 96.5 x 48 cm
- Min-Max Crossbars Spacing: 23 5/8 - 29 3/4 in (60 - 75.5 cm)
- Max Weight Capacity: 100 pounds (45 kg)
- Functional rooftop cargo box provides 14 cubic feet of additional packing space
- Rugged and durable design keep contents protected
- FastGrip quick-mount system assembles in minutes
- Passenger-side opening for easy loading and unloading
- Central Locking system provides maximum safety
- Thule Comfort Key can only be removed when all locking points are securely closed
- Fits 3-5 snowboards (max length: 155 cm)
- External dimensions: 67 x 35 x 16 inches; Internal dimensions: 61 x 33 x 14 inches
- Load capacity: 110 lbs; Product weight: 34 lbs
- Height off crossbar: 16 inches. Fast and secure mounting
- Universal Fit - This roof top storage box is universal fit for mounting to max 13 inches wide cross bar, please check the dimension before purchase.
- Spacious Capacity - Expand your vehicle's cargo capability significantly with 11 cubic feet of spacious storage and a robust 110 lb weight limit. Designed with a 14-inch wide opening for easy loading of large gear, this box provides ample room for luggage and essentials while keeping your passenger area comfortable and uncluttered. It's perfect for families, road trippers, or outdoor adventurers.
- Secure Lock, Stable Travel - The key lock system keeps your valuables safe. You can only remove the key after all lock points are fully secured. The belongings and luckages stay firmly in place inside during your drive, even on bumpy roads – no shifting or falling out. Open it from the passenger side for easy loading and unloading.
- Impact-Resistant Protection - Built with UV-protected, weather-resistant ABS, the cargo box shields contents from rain, sun, snow, and impacts while maintaining structural integrity in all conditions for reliable long-term performance.
- Overall Dimensions - 53" L x 34" W x 15" H | Capacity: 11 Cubic Feet and up to 110 LBS. Package includes [1] 53 inches length storage box, [2] security lock key, and [4] heavy duty tool free installation mounting brackets.
- 𝐔𝐧𝐢𝐯𝐞𝐫𝐬𝐚𝐥 - Roof cargo box is universal, fits for vehicles with cross bars only, and no tool assembly and installation. Can help increase cargo space without impeding on passenger comfort.
- 𝐏𝐫𝐞𝐦𝐢𝐮𝐦 𝐌𝐚𝐭𝐞𝐫𝐢𝐚𝐥 - Made of high quality ABS plastic, hardness and durable for long lasting using. Can help protect your contents from exposure to the inclement weather.
- 𝐏𝐫𝐨𝐝𝐮𝐜𝐭 𝐈𝐧𝐟𝐨 - 110 LBS loading bearing, strong support arm. Cargo box dimension: 53 inches X 34 inches X 15 inches, design with black textured surface finish and non-slip bottom.
- 𝐏𝐫𝐚𝐜𝐭𝐢𝐜𝐚𝐥 𝐅𝐮𝐧𝐜𝐭𝐢𝐨𝐧 - Great design with secure key lock, gives us peace of mind when storing our luggage, and also easy opening and closing. Also it can use in variety weather such as rainy, dirt and freezing, etc,.
- 𝐏𝐚𝐜𝐤𝐚𝐠𝐞 𝐈𝐧𝐜𝐥𝐮𝐝𝐞𝐬 - 1 X cargo roof box, 1 X pair of keys, 4 X ABS plastic mounting brackets and mounting hardware as shown.
- 【DURABLE CONSTRUCTION】Crafted from high-quality ABS material, the hard shell rooftop cargo box ensures long-lasting durability. Its waterproof and UV-resistant design protects luggage from various weather conditions, making it ideal for road trips. The aerodynamic shape also reduces fuel consumption and noise for a smoother ride
- 【SPACIOUS 12 CUBIC FEET STORAGE】With dimensions of 54.3"L x 31.5"W x 13.4"H, the rooftop cargo box offers 12 cubic feet (340L) of extra storage space. With a maximum capacity of 165 lbs, it significantly increases storage capacity for your belongings
- 【UNIVERSAL FIT】Compatible with all vehicles equipped with a roof rack, including cars, vans, and SUVs. Prior to purchase, please verify compatibility by checking the roof rack fitting guidelines
- 【CONVENIENT DUAL-SIDED OPENING】The dual-sided opening system allows easy access from both sides of the cargo box. Includes 2 keys and 2 straps for added security. Ensure one side is locked when opening the other side
- 【RELIABLE WARRANTY】GarveeTech is committed to delivering high-quality products and meeting customer expectations. Enjoy a one-year warranty for added peace of mind. For any inquiries, our team is available to assist you within 24 hours
- Spacious 16 Cu Ft Storage: This hard shell roof cargo carrier offers a generous 16 cubic feet of space, ideal for road trips, vacations, or outdoor gear. Overall dimensions: 58.3"(L) x 35.4"(W) x 13"(H)
- Heavy-Duty ABS + PMMA Build: Made from durable ABS and PMMA materials, this car roof box is UV-resistant, impact-resistant, and weatherproof to protect valuables in harsh outdoor conditions
- Dual-Side Opening & Secure Lock: Features dual-side opening for convenient loading/unloading. Lock system ensures the key can only be removed when securely closed for maximum safety
- Tool-Free Installation: Quick and easy mounting with no tools required. Compatible with most round, square, and aerodynamic crossbars for universal fit on cars and SUVs
- Passenger-Side Accessibility: Designed for safety and convenience, the box opens up to 14.5" wide from the passenger side with strong support arms to hold the lid open during use
- 【UNIVERSAL】This extra long rooftop cargo carrier fits for vehicles with cross bars only, no tool assembly & installation. Increases vehicle cargo space without impeding on passenger comfort.
- 【LARGE CAPACITY】Rooftop cargo box provides 11 cubic feet of additional storage space. The maximum storage capacity of 110lbs when evenly distributed. And it can be opened up to 14" wide to store bulky items.
- 【ROBUST DESIGN】Constructed of rugged, impact-resistant ABS material for long-lasting durability, able to protect your contents from exposure to the inclement weather.
- 【SECURITY LOCKING SYSTEM】Includes key and lock to secure valuables in the box, to ensure cargo safety and s proper lid alignment. It can open from the side and stays open til you close it.
- 【SPECIFICATION】Size: 11 Cubic Feet Internal Storage, 110lbs Max Capacity | Overall Dimensions: 53" L x 34" W x 15" H | Surface Finish: Black Texture Finish
- Easy Dual Access: This rooftop cargo box features convenient dual-side opening panels, allowing you to load/unload from either side of your vehicle - perfect for tight parking spaces. The stay-open lids with gas struts provide hands-free access while loading gear, eliminating the need to walk around your vehicle.
- Heavy-Duty Capacity: Engineered with reinforced structural supports, this roof top box safely carries bulky luggage, camping gear and sports equipment. The impact-resistant hard shell maintains perfect integrity even at highway speeds, making it ideal for road trips and family vacations.
- Locking Security: Your belongings stay protected with the roof box's built-in locking mechanisms (includes 2 keys). Heavy-duty reinforced straps with anti-theft buckles ensure the car top carrier stays firmly attached to any roof rack system throughout your journey.
- Weatherproof Shell: The car roof box features UV-resistant ABS material and premium silicone seals that keep contents completely dry in heavy rain or snow. The wind-resistant design eliminates noise while driving, making it quieter than standard cargo carriers.
- High Compatibility: This versatile roof top cargo box fits most SUV, crossover and truck roof racks with its adjustable clamp system. The low-profile design maintains garage clearance while offering exceptional storage capacity - perfect for small families and adventure travelers alike.
- 【Overall Dimensions】70'' L x 31'' W x 15'' H , Capacity: 17.7 Cubic Feet volume and holds up to 165 lbs;
- 【Durable & Weatherproof Protection】Crafted from impact-resistant ABS material, this rooftop cargo box withstands harsh UV rays, rain, snow, and road debris while maintaining a sleek, glossy finish. Designed to hold 165 lbs of gear, its rugged shell defends luggage, sports equipment, or camping essentials from the elements, ensuring your belongings stay dry and intact mile after mile;
- 【Double-Side Opening for Hassle-Free Access】Uniquely designed to open from both sides, allowing easy loading of bulky items like skis, suitcases, or coolers. The self-supporting gas struts keep the lid securely open while you organize, and the key-lock system ensures it stays closed until you’re ready to unlock;
- 【Aerodynamic Design for Quiet, Fuel-Efficient Travel】Engineered with a wind-cheating profile, this cargo box minimizes drag and noise at highway speeds. The smooth contours reduce fuel consumption and eliminate whistling sounds, delivering a quieter, smoother ride compared to bulky competitors;
- 【Secure Travel with Anti-Theft Locking System】Two security keys lock all securing points simultaneously (keys removable only when fully closed), deterring theft during stops. Reinforced straps and a robust frame keep the box anchored, even on rough terrain. Perfect for road trips, ski weekends, or family vacations—travel smarter, not harder!
- 【Tool-Free Installation & Universal Compatibility】Fits round, square, and most aerodynamic roof racks with no tools required—simply clamp it onto your vehicle’s crossbars using the pre-assembled mounts. It offers 17.7 cubic feet of storage, ideal for a wide variety of vehicles, including cars and SUVs. Always check your roof rack specs for compatibility.
- Perfect for Road Trip: Take the cargo box to the park, the beach, the sports field, or any place you need to store. Works on all vehicles with rack, suitable for cars, vans, SUVs, etc. Sleek aerodynamic design to reduce drag and has less noise.
- High Quality Material: The roof box is manufactured from sturdy ABS and PMMA material for long-lasting use, able to protect your valuables from exposure to the elements and can load 130 lbs capacity, suitable for round, square, factory and most aerodynamic bars.
- 16 Cubic Feet Cargo Box with Car Trunk Organizer---With the large capacity, the roof cargo box can help you securely carry 16 cubic feet worth of essentials, can increase vehicle cargo space without impeding on passenger comfort, more capacity, more pleasure!
- Secure & Convenient Use: In order to keep your belongings secure, this vehicle cargo carrier is designed with the security lock that has keys. More importantly, Dual-sided opening for easy access on either side of your vehicle to increase efficiency and convenience.
- Easy to Install: With equipped hardware and detailed instruction, the car rooftop cargo carrier is easy to be mounted to the car top. Then you can start a hassle-free trip with your family and friends to appreciate the wonderful scenery along the way.
Last Update : 2025-09-25
