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.Height off crossbar : 17 in
- 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
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
- Integrated SKS Lock System. Dimensions: L 81.00 x W 36.00 x H 15 inches
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
- Ample Storage Space: MARKSIGN deluxe truck cargo bag has a capacity of 26 cubic feet and measures 51x40x22 inches (130x100x55cm). The truck bed bag can easily store the luggage of a family of 5-6 people. It provides plenty of space for all your essentials, suitable for any truck bed.
- 100% Waterproof: The entire cargo bag is welded with high-quality materials, leaving no stitch holes or leak points. It is fully waterproof, UV-resistant, tear-resistant and scratch-proof. The #10 vinyl-coated zipper and Velcro rain cover effectively block rainwater. It performs well in all weather conditions and protects your cargo from rain, snow, sunlight and dust.
- Additional Attachment: Equipped with 4'x 6' heavy cargo net that can be extended up to 8'x12'. To ensure that cargo transport bags are secured to your truck; There are two heavy-duty handles on both sides for easy moving; We also provide a storage bag for the cargo bag for easy storage.
- Travel without Worry: Regardless of the weather, take your family or friends and enjoy the joy of a worry-free trip. Large storage space, release the space inside the car, make the journey more comfortable for multiple people.
- Service Guarantee: MARKSIGN is committed to producing only high quality products, and great customer support, any questions, contact the us at any time, 100% service, 100% satisfaction.
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)
- Secure & protect your gear in this 18 cubic ft. HDPE plastic hard shell vehicle cargo carrier; high-capacity interior dimensions 57 L x 38 1/2 W x 17 3/4 H inches; aerodynamic design for fuel efficiency
- Weatherproof storage for your luggage with a four corner locking system, front latch, and weather-tight seal for ultimate car rooftop protection and security
- Easy & convenient loading and unloading from either side of the car make for smooth travel and hassle-free storage
- No tools required, easy assembly and installation on Vehicles with Roof Luggage Rails and Crossbars.All mounting hardware and simple instructions are included to get you safely on the road quickly. The base is pre-drilled for 24in crossbar spacing - if your vehicles crossbars are NOT adjustable the plastic base can be re-drilled to match your vehicle (20in to 30in bar spacing)
- 【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 12/14 CUBIC FEET STORAGE】With dimensions of 54.3"L x 31.5"W x 13.4"H/62.2"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】 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
- 【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/62.2"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】 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
- DUAL-SIDE OPENING FOR EASY ACCESS: Dual-side opening design allows you to open it from either the driver side or the passenger side, which brings more convenience for loading and unloading. (NOTE: There is protective film on the lid. Please peel off the film before use.)
- FAIR CAPACITY: With 13.4 cubic feet maximum storage capacity and 150lbs loading capacity, the roof cargo carrier can allow for more space in your car. What’s more, its streamlined design will reduce drag and noise during driving.
- LOCKING SYSTEM FOR SAFETY: It is designed with locks on both sides and comes with keys for protecting your valuables. And the stiffeners at the bottom of the roof cargo box strengthen its stability.
- EASY TO INSTALL: It is simple in structure and light in weight (approximately 24.25lbs). It won’t be difficult for you to lift it and install it to your car. And it can work with most vehicles with crossbars, such as car, suv, van, etc. Applicable Cross Bar: Max. Width 2.36”. Max. distance between bottom holes for installation: 40.94”. Min. distance between bottom holes for installation: 15.35”.
- QUALITY MATERIAL FOR DURABILITY & BETTER PROTECTION: Made from ABS material for long-lasting use. And it can protect your luggage or equipment from being exposed to sun, rain or dust. And it is protected with 3-Year Warranty.
- 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.
- Secure Travel Solution with Locking Rooftop Cargo Box: Travel confidently knowing your gear is safe! Our rooftop cargo box features a secure locking system (includes two keys) and robust straps, providing peace of mind against theft during weekend getaways or long road trips.
- Effortless Rooftop Cargo Box Installation: Enjoy a quick and hassle-free setup! This rooftop cargo box comes complete with all necessary components and clear instructions, allowing you to spend less time installing and more time adventuring. Experience ultimate convenience without compromising quality.
- Aerodynamic Rooftop Cargo Box Design: Experience a smoother, quieter ride! Engineered with an aerodynamic shape, this rooftop cargo box significantly cuts wind resistance and noise. The result? Improved fuel efficiency and a more enjoyable journey for you and your passengers.
- Spacious 19.4 cu ft Rooftop Cargo Box Capacity: Maximize your storage! Offering a generous 14 cubic feet of space and a 165 lbs weight capacity, this rooftop cargo box provides ample room for all your travel essentials, luggage, or outdoor gear – perfect for families and adventure seekers.
- Universal Fit Rooftop Cargo Box for Cars & SUVs: The ultimate travel companion for most vehicles! Designed for versatile compatibility, this rooftop cargo box fits a wide range of cars and SUVs. Simply check your roof rack compatibility before purchase to enjoy secure, added storage on any drive.
- 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.
- Rugged & Weatherproof Construction：Our rooftop cargo carrier built from premium ABS material, this hard shell rooftop cargo box is waterproof and UV-resistant. It shields your luggage from rain, snow, and sun, while the aerodynamic design minimizes wind noise and reduces fuel consumption—a perfect companion for any road trip.
- Spacious 12 Cubic Feet of Storage:Offering a generous 12 cubic feet (340L) of extra storage, this cargo box measures 54.3"L x 31.5"W x 13.4"H and supports up to 165 lbs. Easily expand your vehicle’s cargo capacity for camping, vacations, and everyday travel.
- Universal Roof Rack Compatibility:Compatible with all vehicles equipped with a roof rack, including cars,vans, and SUVs. Please check your vehicle’s roof rack specifications before purchasing to ensure a proper fit.
- Easy Dual-Sided Access & Security:Features a convenient dual-sided opening for quick loading and unloading from either side of your vehicle. Includes 2 secure locks and 2 straps to keep your gear protected. Remember to keep one side locked while accessing the other for added safety.
- Easy Assembly: Enjoy a quick and hassle-free setup! Our rooftop cargo box comes complete with all necessary components and clear instructions
- Spacious 12 Cu Ft Storage for Travel Gear: Offers approximately 12 cubic feet (340L) of additional cargo space to help expand your vehicle’s storage. Overall dimensions measure 54.3" L x 31.5" W x 13.4" H, making it suitable for luggage, camping equipment, and longer items such as skis, depending on size and positioning.
- Spacious 12 Cu Ft Storage for Travel Gear: Offers approximately 12 cubic feet (340L) of additional cargo space to help expand your vehicle’s storage. Overall dimensions measure 54.3" L x 31.5" W x 13.4" H, making it suitable for luggage, camping equipment, and longer items such as skis, depending on size and positioning.
- Durable ABS Hard Shell with Weather Resistance: Constructed from UV-resistant ABS material, this hard shell cargo box helps protect contents from rain, sunlight, and road conditions. The aerodynamic shape is designed to support stable driving while reducing wind noise.
- Dual-Side Access with Secure Lock System: Features a dual-sided opening design for convenient access from either side of the vehicle. Includes 2 keys and an integrated locking system to help keep the box closed during travel, with keys removable only when properly secured.
- Universal Roof Rack Fit with Included Straps: Compatible with most vehicles equipped with roof racks, including cars, SUVs, and vans. Comes with tool-free mounting hardware and 2 internal straps to help keep cargo more stable during transit. Please verify roof rack compatibility before purchase.
Last Update : 2026-05-19
