Choosing an extra long rooftop cargo box means balancing capacity with ease of use and durability. The best overall pick, the Thule Force 3 XL, offers a spacious interior and reliable security, making it ideal for extended trips. The Yakima SkyBox NX 18 XLG stands out for its sleek design and weather resistance, perfect for frequent travelers. However, longer cargo boxes often come with tradeoffs like increased wind noise, added weight, and higher costs. Continue reading to see a detailed breakdown of the top options and what makes each suitable for different needs.
Complete the kit
Key Takeaways
- The most spacious models tend to be heavier and more difficult to install, so consider your vehicle’s roof strength and handling capacity.
- Dual-side opening features significantly improve usability, especially for larger boxes, but may add to the overall cost and weight.
- Waterproofing and UV resistance are common in premium options, ensuring durability over years of exposure to the elements.
- Price varies widely; investing in a slightly more expensive model often yields better security and long-term reliability.
- The choice between soft-shell and hard-shell cargo boxes hinges on storage needs, with hard shells offering better security and durability.
| RoofPax XXL 28 cuft Car Rooftop Cargo Carrier Bag with Waterproof Design and Heavy Duty Tie Down Straps |  | Best Overall for Large Capacity and Versatile Compatibility | Capacity: 28 cuft | Material: Waterproof, weather-ready fabric | Includes: 4 patented door hook straps, 4 hooks, secure combination lock, storage bag | VIEW ON AMAZON | See Our Full Breakdown |
| SportRack Vista XL Rear Opening Cargo Box |  | Best for Easy Access and Quick Installation | Capacity: 18 cubic feet | Material: UV-resistant ABS | Dimensions: 63 x 38 x 19 inches | VIEW ON AMAZON | See Our Full Breakdown |
| Season Guard 64″ x 39″ x 4″ Rooftop Cargo Carrier Basket, 150lb Capacity |  | Best for Expandable, Heavy-Duty Outdoor Use | Dimensions: 64″ x 39″ x 4″ | Expandable Length: 43″ to 64″ | Weight Capacity: 150 lbs | VIEW ON AMAZON | See Our Full Breakdown |
| Garvee Heavy Duty Hard Shell Roof Top Cargo Carrier – 69″ x 33″ x 11″, Waterproof, Lockable, 17 Cu Ft, 165 Lb Capacity |  | Best for Secure, Rigid Hard Shell Protection | Dimensions: 69″ L x 33″ W x 11″ H | Capacity: 17 Cu Ft | Weight Capacity: 165 lbs | VIEW ON AMAZON | See Our Full Breakdown |
| Hard Shell Roof Top Cargo Carrier Waterproof Travel Luggage Box |  | Best for Versatile, Easy-Install Rigid Storage | Material: ABS plastic | Capacity: 110 lbs | Dimensions: 53 x 34 x 15 inches | VIEW ON AMAZON | See Our Full Breakdown |
| iBirdie Roof Rack Cargo Carrier 36.4 Cubic Feet |  | Best for Maximum Capacity and Versatility | Material: 1200D oxford and PVC | Capacity: 36.4 cubic feet | Dimensions: 56 x 45 x 25 inches | VIEW ON AMAZON | See Our Full Breakdown |
| Thule Force 3 XL Cargo Box |  | Best for Reliable Quality and Ease of Use | Capacity: up to 16 cubic feet | Mounting System: Quick and secure with visual indicator | Locking System: SlideLock with separate locking functions | VIEW ON AMAZON | See Our Full Breakdown |
| Rooftop Cargo Carrier Hard Shell 16 Cubic Feet Storage Box for SUV, Glossy Black |  | Best for SUV Owners Seeking Reliable, Hassle-Free Storage | Capacity: 16 cubic feet | Weight Capacity: 110 lbs | Color: Glossy Black | VIEW ON AMAZON | See Our Full Breakdown |
| Hard Shell Roof Cargo Box Carrier with Security Keys and Dual Side Opening |  | Best for Secure, Weather-Resistant Storage | Material: ABS and PMMA | Capacity: 15.5 cubic feet | Dimensions: 58.3 x 35.4 x 13 inches | VIEW ON AMAZON | See Our Full Breakdown |
| Yakima SkyBox NX 18 XLG Rooftop Cargo Carrier, 18 Cu Ft, SKS Lock, Black |  | Best for Spacious, Secure Road Trip Storage | Capacity: 18 cubic feet | Fits skis/snowboards: up to 195cm | Locking system: SKS Lock | VIEW ON AMAZON | See Our Full Breakdown |
| GarveeTech Rooftop Cargo Box Carrier, 165 LBS Capacity, Dual-Side Opening, Waterproof, UV-Resistant, Black |  | Best Overall for Weather-Resistant, Large Capacity Storage | Material: ABS | Capacity: 12 cubic feet (340 L) | Weight Capacity: 165 lbs | VIEW ON AMAZON | See Our Full Breakdown |
| Rooftop Cargo Carrier 16 Cubic Feet Hard Shell SUV Storage Box |  | Best for Spacious, Weatherproof Storage with Easy Installation | Capacity: 16 cubic feet | Weight Capacity: 110 lbs | Material: Hard shell | VIEW ON AMAZON | See Our Full Breakdown |
| Thule Motion 3 Rooftop Box |  | Best for Aerodynamic Design with Easy, Secure Mounting | Design: Wing-shaped profile with forward-leaning nose | Handle: Wide handle for one-handed operation | Accessories: Interior light, protective liner, storage cover | VIEW ON AMAZON | See Our Full Breakdown |
| Rooftop Cargo Box, 13 Cubic Ft, Grey |  | Best for Family Travel with Easy, Secure Access | Capacity: 13 cubic feet | Color: Grey | Material: Impact-resistant ABS and PMMA | VIEW ON AMAZON | See Our Full Breakdown |
| extra long rooftop cargo boxe | Capacity | Material | Dimensions | Weight Capacity |
|---|---|---|---|---|
| RoofPax XXL 28 cuft Car Roofto | 28 cuft | Waterproof, weather-ready fabric | — | — |
| SportRack Vista XL Rear Openin | 18 cubic feet | UV-resistant ABS | 63 x 38 x 19 inches | — |
| Season Guard 64" x 39" x 4" Ro | — | High-strength tubular steel | 64" x 39" x 4" | 150 lbs |
| Garvee Heavy Duty Hard Shell R | 17 Cu Ft | ABS plastic with UV coating | 69" L x 33" W x 11" H | 165 lbs |
| Hard Shell Roof Top Cargo Carr | 110 lbs | ABS plastic | 53 x 34 x 15 inches | — |
| iBirdie Roof Rack Cargo Carrie | 36.4 cubic feet | 1200D oxford and PVC | 56 x 45 x 25 inches | — |
| Thule Force 3 XL Cargo Box | up to 16 cubic feet | Weather-resistant plastic | — | — |
| Rooftop Cargo Carrier Hard She | 16 cubic feet | — | — | 110 lbs |
| Hard Shell Roof Cargo Box Carr | 15.5 cubic feet | ABS and PMMA | 58.3 x 35.4 x 13 inches | 130 pounds |
| Yakima SkyBox NX 18 XLG Roofto | 18 cubic feet | — | — | — |
| GarveeTech Rooftop Cargo Box C | 12 cubic feet (340 L) | ABS | 54.3 in L x 31.5 in W x 13.4 in H | 165 lbs |
| Rooftop Cargo Carrier 16 Cubic | 16 cubic feet | Hard shell | — | 110 lbs |
| Thule Motion 3 Rooftop Box | — | — | — | — |
| Rooftop Cargo Box | 13 cubic feet | Impact-resistant ABS and PMMA | — | 130 lbs |
More Details on Our Top Picks
RoofPax XXL 28 cuft Car Rooftop Cargo Carrier Bag with Waterproof Design and Heavy Duty Tie Down Straps
This cargo carrier stands out for its impressive 28 cubic feet capacity, making it ideal for families or groups needing maximum space. Its waterproof, weather-resistant fabric ensures your gear stays dry regardless of weather, surpassing the durability of rigid options like the Garvee hard shell. The patented mounting system offers broad compatibility across SUVs and larger vehicles, but careful alignment during installation is essential to avoid frustration. The heavy-duty straps and included accessories provide security, though handling the straps can be cumbersome for some users. Compared to smaller options, this bag’s size is a clear advantage, but the weight and installation precision required are tradeoffs to consider.
Pros:- Massive 28 cuft capacity for extensive gear storage
- Waterproof, weather-resistant fabric keeps contents dry
- Secure mounting system compatible with various roof types
- Includes straps, hooks, and a lock for safety
Cons:- Installation can require careful alignment and patience
- Heavy straps may be challenging to handle alone
Best for: Large families or outdoor enthusiasts with bigger vehicles seeking flexible, waterproof cargo solutions.
Not ideal for: Solo travelers or those with compact cars who need a lightweight, simple option.
- Capacity:28 cuft
- Material:Waterproof, weather-ready fabric
- Includes:4 patented door hook straps, 4 hooks, secure combination lock, storage bag
- Warranty:Lifetime on zippers, 5-year on fabric
Our verdict“This carrier suits those needing maximum flexible storage and waterproof protection, accepting some handling complexity.”
SportRack Vista XL Rear Opening Cargo Box
The SportRack Vista XL is an excellent choice for those valuing accessibility, with its rear opening design that simplifies loading and unloading. Its 18 cubic foot capacity is ample for most trips but falls short of the massive volume offered by the RoofPax XXL. Made from durable UV-resistant ABS, it withstands harsh sunlight better than fabric bags, but the limited 100-pound weight capacity might restrict heavier gear compared to the Garvee hard shell or Season Guard basket. Its tool-free mounting system makes it quick to install, though checking compatibility with your roof rack is necessary. Compared to the Season Guard basket’s expandable design, this box’s fixed size offers less flexibility but often easier setup.
Pros:- Large 18 cuft capacity for versatile use
- UV-resistant ABS material enhances durability
- Rear opening allows easy access without reaching over the vehicle
- Tool-free, quick mounting hardware
Cons:- Limited to 100 lbs maximum load
- Size may be restrictive for very bulky items
Best for: Weekend travelers who prioritize quick access and straightforward installation over maximum capacity.
Not ideal for: Heavy-duty outdoor adventurers carrying bulky or heavy gear exceeding 100 lbs.
- Capacity:18 cubic feet
- Material:UV-resistant ABS
- Dimensions:63 x 38 x 19 inches
- Max Weight Capacity:100 pounds
Our verdict“Ideal for users who want fast, convenient access and simple setup, with moderate storage needs.”
Season Guard 64″ x 39″ x 4″ Rooftop Cargo Carrier Basket, 150lb Capacity
The Season Guard basket offers a versatile, expandable design that increases from 43″ to 64″ in length, making it perfect for bulky outdoor gear. Its durable, rust-resistant steel construction and aerodynamic wind fairing help reduce noise and improve fuel efficiency—benefits not shared by softer fabric bags. Its ability to support up to 150 lbs exceeds many soft options, but the need for compatible crossbars limits its universal applicability. While installation is straightforward, vehicle compatibility and weight capacity are tradeoffs compared to rigid, smaller boxes. This basket’s expandability and steel build make it a strong choice for rugged outdoor use, unlike the more lightweight, less durable options.
Pros:- Expandable length increases cargo volume by 20%
- High-strength, rust-resistant tubular steel
- Reduces wind noise and enhances fuel economy
- Easy, tool-free installation
Cons:- Requires compatible vehicle crossbars
- Limited to 150 lbs capacity, not suitable for very heavy gear
Best for: Outdoor enthusiasts with larger vehicles seeking a flexible, heavy-duty cargo platform.
Not ideal for: Small car owners or those with limited crossbar compatibility who prefer quick, simple setups.
- Dimensions:64″ x 39″ x 4″
- Expandable Length:43″ to 64″
- Weight Capacity:150 lbs
- Material:High-strength tubular steel
Our verdict“Perfect for rugged outdoor use where cargo size flexibility and durability matter most, with some vehicle compatibility considerations.”
Garvee Heavy Duty Hard Shell Roof Top Cargo Carrier – 69″ x 33″ x 11″, Waterproof, Lockable, 17 Cu Ft, 165 Lb Capacity
The Garvee hard shell cargo carrier provides a secure, waterproof 17 cubic feet of storage, making it a reliable choice for travelers who prioritize weather resistance and security. Its aerodynamic shape minimizes wind noise and drag, comparable to the Season Guard basket, but with the added advantage of a lockable, rigid shell. However, its size and weight—69″ x 33″ x 11″ and 165 lbs—may pose installation challenges, especially on vehicles without sufficient roof rack support. While offering excellent weatherproofing and security, it lacks the expandability of the Season Guard basket and is bulkier to handle. This model appeals to those who prefer rigid, lockable protection over flexible or fabric options.
Pros:- Waterproof, UV-resistant, and lockable for security
- Aerodynamic design reduces wind noise
- Easy tool-free installation with included hardware
- Rigid shell offers better protection against impacts
Cons:- Heavy weight may complicate installation
- Larger size limits vehicle compatibility
Best for: Travelers needing weatherproof, secure storage for heavy or valuable gear on long trips.
Not ideal for: Lightweight travelers or those with smaller vehicles where the bulk and weight could hinder installation.
- Dimensions:69″ L x 33″ W x 11″ H
- Capacity:17 Cu Ft
- Weight Capacity:165 lbs
- Material:ABS plastic with UV coating
Our verdict“Best suited for users requiring highly secure, weatherproof cargo with rigid, impact-resistant protection, accepting installation difficulty due to size.”
Hard Shell Roof Top Cargo Carrier Waterproof Travel Luggage Box
This universal cargo box offers a generous 110 lbs capacity in a compact size that fits most vehicles with cross bars. Made from durable ABS plastic, it provides weather resistance and security, making it a practical choice for various outdoor trips. Its 53 x 34 x 15-inch dimensions make it smaller than the Garvee or the Season Guard basket, but still large enough for substantial gear. Its quick, tool-free installation with included hardware appeals to users seeking straightforward setup. However, it’s limited to vehicles equipped with compatible roof racks, and lacks internal compartments or padding to organize gear effectively. Compared to larger or expandable options, this box offers a good balance of capacity and ease of use for most standard vehicles.
Pros:- Durable, weather-resistant construction
- Easy installation with included hardware
- Secure key lock enhances safety
- Compact, versatile size fits most vehicles
Cons:- Limited to vehicles with cross bars
- No internal compartments or padding
Best for: Moderate outdoor travelers needing weatherproof, secure storage on vehicles with existing cross bars.
Not ideal for: Solo users or those with non-rack vehicles seeking a lightweight or highly expandable option.
- Material:ABS plastic
- Capacity:110 lbs
- Dimensions:53 x 34 x 15 inches
- Locking mechanism:Secure key lock
Our verdict“A solid choice for average outdoor users who want reliable, weatherproof storage on vehicles with cross bars, accepting limited internal organization.”
iBirdie Roof Rack Cargo Carrier 36.4 Cubic Feet
The iBirdie Roof Rack Cargo Carrier stands out thanks to its enormous 36.4 cubic feet capacity, making it ideal for large family trips or extended outdoor adventures. Its waterproof design and universal fit allow it to handle all weather conditions and fit most vehicle types, even those without roof racks. Compared to smaller options like the Rooftop Cargo Carrier Hard Shell 16 Cubic Feet, this model offers significantly more space, though it comes with the tradeoff of being bulkier and potentially more cumbersome to install. Its foldable feature adds convenience for storage when not in use but may require extra straps for a secure fit, especially on vehicles with irregular roof shapes.
Pros:- Enormous 36.4 cubic feet capacity for large loads
- Waterproof and durable for all-weather use
- Universal fit for various vehicle types, with or without roof racks
- Foldable design simplifies storage when not in use
Cons:- May require additional straps for secure attachment on some vehicles
- Potentially bulky and heavy when fully loaded, complicating handling
Best for: Families or groups needing high-volume storage for long trips, camping, or outdoor gear.
Not ideal for: Urban drivers with limited garage space or those seeking lightweight, quick-install solutions for short errands.
- Material:1200D oxford and PVC
- Capacity:36.4 cubic feet
- Dimensions:56 x 45 x 25 inches
- Compatibility:Universal fit for all vehicle types
Our verdict“This carrier is best suited for those who prioritize maximum storage capacity over ease of handling or quick setup.”
Thule Force 3 XL Cargo Box
The Thule Force 3 XL offers a more moderate 16 cubic feet of storage, but excels in durability and ease of access, especially with its dual-side opening feature. Designed for active users who need quick, secure loading, it provides a reliable mounting system with visual indicators for proper installation, which is a step above many budget options. When compared with the Yakima SkyBox NX 18 XLG, it may have slightly less capacity but is generally lighter and easier for solo installations, though it might feel less spacious for very bulky gear. Its weather-resistant plastic construction ensures it withstands tough conditions without sacrificing ease of use.
Pros:- Durable, weather-resistant construction
- Easy to mount with visual indicators
- Provides ample storage with dual-side access
- Reliable locking system for security
Cons:- Can be heavy to handle alone, especially when fully loaded
- Initial installation may require some effort for first-timers
Best for: Active travelers needing secure, reliable storage for gear that’s easy to access regularly.
Not ideal for: Large families or those with bulky gear requiring maximum storage space.
- Capacity:up to 16 cubic feet
- Mounting System:Quick and secure with visual indicator
- Locking System:SlideLock with separate locking functions
- Material:Weather-resistant plastic
Our verdict“This box suits active users who value durability and quick access over maximum volume.”
Rooftop Cargo Carrier Hard Shell 16 Cubic Feet Storage Box for SUV, Glossy Black
The Rooftop Cargo Carrier Hard Shell 16 Cubic Feet offers a sleek, weatherproof solution for SUV owners who need dependable extra space. Its easy installation process requires no special tools, making it a practical choice for quick setup. With dual side access, loading and unloading gear becomes straightforward, especially when compared with larger, bulkier carriers like the iBirdie Cargo Carrier. However, fitting it securely depends on the compatibility of your roof rack’s crossbar dimensions, and its 16 cubic feet capacity may be limiting for larger families or extended trips. The sturdy construction balances durability with simplicity, though its weight capacity of 110 lbs requires sturdy roof bars.
Pros:- Weatherproof and secure locking system
- Easy to install without tools
- Dual side opening for convenience
- Compact, sleek black design enhances vehicle look
Cons:- Fitting depends heavily on crossbar dimensions
- Limited capacity for very large loads
Best for: SUV owners who want a reliable, mid-sized cargo box for frequent travel and outdoor gear.
Not ideal for: Users with very large or bulky loads needing maximum capacity or those with incompatible roof rack setups.
- Capacity:16 cubic feet
- Weight Capacity:110 lbs
- Color:Glossy Black
- Installation:Hassle-free, no tools required
Our verdict“This carrier is ideal for SUV owners who prioritize ease of installation and reliable weatherproof storage for moderate loads.”
Hard Shell Roof Cargo Box Carrier with Security Keys and Dual Side Opening
The Hard Shell Roof Cargo Box Carrier combines weather resistance with security, featuring a high-gloss ABS and PMMA build. Its 15.5 cubic feet capacity makes it suitable for those who need reliable protection for their gear on the road, with side-opening for easy access. When compared with the Thule Force 3 XL, its security keys and robust construction offer a higher level of protection, though it’s slightly smaller and fits only crossbars up to 3 inches wide. The tool-free installation simplifies setup, but verifying crossbar compatibility is essential before purchase to avoid fitment issues.
Pros:- Weather-resistant ABS and PMMA construction
- Easy, tool-free installation
- Secure locking with keys
- Side-opening for convenience
Cons:- Limited to crossbars up to 3 inches wide
- Smaller capacity than some competitors like the Yakima SkyBox
Best for: Travelers prioritizing security and weatherproofing for valuable or delicate gear.
Not ideal for: Those needing maximum capacity or with wider crossbars exceeding 3 inches.
- Material:ABS and PMMA
- Capacity:15.5 cubic feet
- Dimensions:58.3 x 35.4 x 13 inches
- Weight Capacity:130 pounds
Our verdict“This box is best for security-conscious users who want a weatherproof, easy-to-install cargo solution for moderate loads.”
Yakima SkyBox NX 18 XLG Rooftop Cargo Carrier, 18 Cu Ft, SKS Lock, Black
The Yakima SkyBox NX 18 XLG offers an impressive 18 cubic feet of space, with dual-sided access and a lockable handle that enhance its security and convenience. Its sleek nano-texture finish adds a touch of style, and it’s designed to handle gear like skis up to 195cm in length. Compared with the Thule Force 3 XL, it provides slightly more capacity, making it better suited for bulky or longer gear, but it may be heavier and more challenging to install solo. Its compatibility depends on your vehicle’s roof rack system, but it’s a reliable choice for those needing substantial space and security on long trips.
Pros:- Generous 18 cu ft capacity
- Dual-sided access simplifies loading
- Lockable handle with SKS security
- Sleek, durable nano-texture finish
Cons:- May be heavy and challenging to install alone
- Limited color options, primarily black
Best for: Road trippers or outdoor enthusiasts who need ample, secure storage for bulky gear and longer items.
Not ideal for: Drivers with limited roof rack compatibility or those seeking a lightweight, quick-install option.
- Capacity:18 cubic feet
- Fits skis/snowboards:up to 195cm
- Locking system:SKS Lock
- Color:Black
Our verdict“This carrier is perfect for those who want maximum space and security for long, gear-heavy trips but are prepared for a heavier setup.”
GarveeTech Rooftop Cargo Box Carrier, 165 LBS Capacity, Dual-Side Opening, Waterproof, UV-Resistant, Black
This cargo box stands out for its durable ABS construction and weatherproof design, making it a reliable choice for all-season travel. Compared to the Rooftop Cargo Carrier 16 Cubic Feet, it offers a slightly smaller capacity but excels in UV resistance and security features. Its dual-sided opening enhances convenience, especially for families loading from different sides. The limited 30-day warranty is a notable drawback, but overall, this model balances robustness with ease of use. It’s best suited for travelers who prioritize weather protection and security but don’t need the absolute largest volume available.
Pros:- Durable and weather-resistant ABS construction
- Large 12 cubic feet capacity for moderate gear
- Dual-sided opening for easy access
- Includes security keys and straps
Cons:- Requires vehicle roof rack for compatibility
- Limited 30-day warranty period
Best for: Families or individuals who need reliable weather-resistant storage with a solid capacity and security features
Not ideal for: Those seeking a longer warranty or a larger volume than 12 cubic feet, especially for extended trips requiring maximum cargo space
- Material:ABS
- Capacity:12 cubic feet (340 L)
- Weight Capacity:165 lbs
- Dimensions:54.3 in L x 31.5 in W x 13.4 in H
- Color:Black
- Opening System:Dual-sided
- Weather Resistance:Waterproof, UV-resistant
Our verdict“A dependable choice for weatherproof storage, ideal for users prioritizing durability over maximum volume.”
Rooftop Cargo Carrier 16 Cubic Feet Hard Shell SUV Storage Box
This model offers a generous 16 cubic feet of weatherproof storage, making it well-suited for those who need more space than the GarveeTech. Its hard shell design ensures protection against the elements, though the lack of specific overall dimensions makes it harder to determine fit for smaller vehicles. Its dual side opening simplifies access, and the secure locking system enhances safety. Compared with the Thule Motion 3, it may lack some premium features like interior lighting, but it provides a straightforward option for larger capacity needs. It’s a good pick for SUV owners who want ample, weatherproof space without fuss.
Pros:- Provides ample 16 cubic feet of weatherproof storage
- Dual side opening for easy access
- Secure locking system enhances security
- Easy installation without special tools
Cons:- Fitment depends on vehicle crossbar dimensions
- No detailed overall size specifications
Best for: SUV owners needing a large, weatherproof cargo solution with straightforward installation
Not ideal for: Drivers with crossbar dimensions outside the specified range or those seeking advanced accessories included in premium options
- Capacity:16 cubic feet
- Weight Capacity:110 lbs
- Material:Hard shell
- Inter-crossbar distance:24.4 in – 31.5 in
- Inter-mounting hole pitch:20.1 in
Our verdict“Ideal for large SUVs requiring weatherproof cargo space with simple, secure access.”
Thule Motion 3 Rooftop Box
The Thule Motion 3 combines an aerodynamic wing-shaped profile with a forward-leaning nose, reducing drag and improving fuel efficiency during long trips. Its quick-mount system and torque indicator make installation effortless, especially compared to bulkier options like the Rooftop Cargo Box, 13 Cubic Ft. The integrated locking mechanisms ensure security, though the higher price and additional accessories can add to costs. If fuel economy and quick setup are priorities, this model’s design and features justify its premium price. It’s best for frequent travelers who value efficiency and reliability without sacrificing style.
Pros:- Aerodynamic design reduces drag and improves fuel efficiency
- Easy to install with quick-mount system and torque indicator
- Secure Locking System ensures lid stays closed
Cons:- Additional accessories may increase overall cost
- Premium price point may be a barrier for some
Best for: Travelers seeking a sleek, aerodynamic cargo box that’s easy to mount and secure
Not ideal for: Budget shoppers or those needing maximum volume, as it offers less capacity than larger, boxy models
- Design:Wing-shaped profile with forward-leaning nose
- Handle:Wide handle for one-handed operation
- Accessories:Interior light, protective liner, storage cover
- Mounting System:PowerClick quick-mount with torque indicator
- Locking System:SlideLock with separate locking and opening functions
Our verdict“Best suited for frequent travelers who prioritize efficiency, style, and quick setup over maximum volume.”
Rooftop Cargo Box, 13 Cubic Ft, Grey
This 13 cubic feet cargo box offers weather-resistant protection with dual-sided access, making it a practical choice for family road trips. Its impact-resistant ABS and PMMA materials provide durability, while the universal mounting brackets facilitate tool-free installation—though it may require crossbars, which could be a hassle for some. Compared to the GarveeTech, it offers slightly less volume but compensates with ease of handling and a secure locking system. Heavy for solo handling, it’s best for those with some help or a stable setup. It suits families who need dependable, safe storage for varied gear.
Pros:- Durable all-weather protection
- Large storage capacity for family gear
- Dual-sided access for convenience
- Secure locking system
Cons:- May require crossbars for installation
- Potentially heavy to handle alone
Best for: Families or casual travelers needing reliable, weatherproof cargo with easy access
Not ideal for: Solo travelers or those with limited lifting capacity, due to weight and installation needs
- Capacity:13 cubic feet
- Color:Grey
- Material:Impact-resistant ABS and PMMA
- Weight Capacity:130 lbs
- Installation:Universal brackets, tool-free setup
Our verdict“A solid choice for families needing weatherproof, secure cargo space with straightforward access.”
How We Picked
These products were evaluated based on capacity, build quality, ease of installation, security features, weather resistance, and overall value. I prioritized models that offer true extra long lengths, ensuring they can handle oversized luggage or equipment. Compatibility with different vehicle types and user-friendly features like dual-side opening were also key factors. The rankings reflect a balance between performance and affordability, helping different types of buyers find the right fit for their needs.Factors to Consider When Choosing Extra Long Rooftop Cargo Boxes
When selecting an extra long rooftop cargo box, understanding your specific needs and vehicle compatibility is essential. Beyond capacity, consider how the box will be used, its durability, and ease of access. A larger box might seem attractive, but it could add significant weight and wind resistance, affecting your vehicle’s handling and fuel efficiency. Investing in quality materials like UV-resistant and waterproof shells can extend the lifespan of your cargo box. Additionally, security features can prevent theft, which is an important consideration for expensive gear. Keep in mind that installation ease and compatibility with your existing roof rack system are crucial for a hassle-free experience.Capacity and Size
Extra long cargo boxes are designed to maximize storage space, but size should match your vehicle’s roof dimensions. Oversized boxes may cause overhangs that impact driving dynamics or violate local regulations. Consider how much gear you typically carry and opt for a model that offers sufficient volume without excessive weight. Remember, larger boxes may require sturdier roof racks, so verify compatibility before purchasing.
Material and Durability
High-quality materials like ABS or polycarbonate shells offer a good balance of strength and weight. Waterproof and UV-resistant coatings protect your gear from the elements, especially if you plan to leave the box mounted year-round. Cheaper or softer materials might crack or degrade faster, leading to costly replacements. Think about the climate you’ll be driving in and choose a model with proven durability.
Security Features
Lockable lids provide peace of mind against theft, especially in public or remote areas. Some models include integrated locking systems, while others rely on compatible padlocks. Security should be a priority if you carry valuable or sensitive items. Keep in mind that added security features can increase the cost but offer significant benefits over the long term.
Ease of Use
Dual-side opening makes access more convenient, especially for larger boxes, enabling you to load and unload from either side of the vehicle. Weight distribution and ease of installation are also important; some models include quick-mount systems that simplify setup. Consider the weight of the box itself—heavier models might require assistance during installation or removal.
Price and Value
Prices vary based on size, material, security features, and brand reputation. Investing in a slightly higher-priced model with proven durability and security can save money over time by reducing replacements and repairs. Conversely, if you rarely carry large loads or drive in mild conditions, a more affordable model might suffice. Balance your budget with your specific needs to find the best value.
Vehicle Compatibility
Ensure your roof rack system supports the cargo box’s mounting requirements—length, width, and weight capacity are key considerations. Check the manufacturer’s specifications for maximum roof load and compatibility with your vehicle’s roof rails or crossbars. An ill-fitting box can compromise safety and ease of use, so measure carefully before purchasing.
Frequently Asked Questions
Can I install an extra long rooftop cargo box on any vehicle?
Most extra long cargo boxes are designed to be compatible with standard roof racks, but it’s important to verify that your vehicle’s roof supports the weight and dimensions of the box. Check your vehicle’s roof load capacity and ensure your existing crossbars can handle the added weight. Some models may require specific mounting hardware or adapters, so reviewing compatibility details before buying will save time and prevent mismatches.
Will a longer cargo box impact my fuel efficiency?
Yes, a longer cargo box increases wind resistance, which can lead to higher fuel consumption, especially at highway speeds. The added weight of a fully loaded box also affects your vehicle’s efficiency. If fuel economy is a priority, consider models that are aerodynamic in shape or opt for smaller capacities if you don’t need maximum storage. Planning your trips and load distribution can help mitigate some of these effects.
Are hard-shell cargo boxes more secure than soft-shell options?
Generally, hard-shell cargo boxes provide better security because they are made from durable materials and often include integrated locking mechanisms. Soft-shell bags or carriers are more vulnerable to theft and weather damage. If you frequently leave your gear on the roof and carry valuables, investing in a hard-shell model with lockable features is advisable. However, soft options tend to be lighter and easier to store when not in use.
How much extra length should I consider for my cargo box?
When selecting length, aim for a box that extends slightly beyond your roof’s edge—typically 6-12 inches—to maximize capacity without overhanging dangerously or affecting your vehicle’s handling. Be mindful of local laws regarding overhangs, which can vary by region. Also, consider the type of gear you plan to carry; longer boxes are better suited for oversize equipment like surfboards, skis, or elongated luggage.
What maintenance is needed for an extra long rooftop cargo box?
Regular cleaning with mild soap and water helps maintain the appearance and prevents buildup of dirt and debris. Check seals and locks periodically to ensure waterproofing and security. Inspect mounting hardware for signs of rust or loosening, especially after long trips or harsh weather. Proper maintenance extends the lifespan of your cargo box and keeps it performing safely and effectively over time.
Conclusion
For those seeking the best overall performance, the Thule Force 3 XL offers a combination of size, security, and ease of use. Budget-conscious buyers will find the Season Guard Rooftop Cargo Carrier Basket provides ample capacity without breaking the bank. Enthusiasts who prioritize durability and premium features should consider the Yakima SkyBox NX 18 XLG for its sleek design and weather resistance. Beginners or occasional users might prefer more straightforward, lightweight options like the Rooftop Cargo Carrier 16 Cubic Feet. Ultimately, your choice depends on your cargo needs, vehicle compatibility, and how often you plan to use the box.
