How many fit
10 of the 26 models checked meet every need here: “Get the most cargo volume”.
10 models fit, out of 26 checkedPicked for one job
Which roof cargo box is largest in this set
Top pick
Thule Motion 3 XXL
Thule Motion 3 XXL has the largest published volume, 21 cubic feet.
Why it suits this job
- Capacity is 21 cubic feet.
- Gear up to 215 centimeters long fits.
- The catch
- Among the longest and widest boxes listed here, it calls for exact checks of hatch clearance and roof length.
- Go with Rhino-Rack MasterFit 530L if
- what decides it for you is maximum cargo volume
More reasons we picked it
- Dualside access is how it opens.
- Published exterior dimensions are about 91.3 x 36.2 x 18.1 inches.
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By published volume, Thule Motion 3 XXL is ahead at 21 cubic feet.
By the numbers
What the data shows
What we found across the roof cargo boxes we compare, plus the checked facts behind each finding.
Why it helps
At 21 cu ft, Thule Motion 3 XXL has the largest listed cargo volume of the comparable models.
- Thule Motion 3 XXL
- 21 cu ft
- Typical (median)
- 16 cu ft
- Models with this figure
- 20 of 26
Show the facts and the math
How we countedThe count uses each product's current fit ratings for “Get the most cargo volume”. A need with no documented match is not counted.
How we calculatedFigures are the published exterior-category volume. Shape, mounting hardware and long gear can leave less room to pack. The median draws on the 20 of 26 models that publish comparable figures.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Thule Motion 3 XXL |
|
| |
| Rhino-Rack MasterFit 530L |
|
| |
| Yakima SkyBox NX XL |
|
|
Decision guide
How to choose for this job
Thule Motion 3 XXL has the largest published volume, 21 cubic feet.
What settles the choice
With 21 cubic feet, it ranks among the longest and widest boxes here, so hatch and roof length need an exact check.
What puts Thule Motion 3 XXL ahead
You get 21 cubic feet, and gear up to 215 centimeters long fits inside.
When another box is the better fit
Rhino-Rack MasterFit 530L is the one to choose if maximum cargo volume is the deciding need. Yakima SkyBox NX XL is likewise the choice when maximum cargo volume decides it.
What this page can’t tell you
- Vehicle compatibility cannot be certified by this screen.
- A published volume figure cannot promise that a given suitcase layout will fit.
- Roof limits depend on the vehicle configuration.
3 options
The top pick and the alternatives
Thule, Motion 3 XXL Black Glossy
Thule Motion 3 XXL
You get 21 cubic feet of space, with room for gear up to 215 centimeters long.
Top pick iftransport skis with the seats left up and pack for a family of four
Key facts
- Capacity is 21 cubic feet.
- Gear up to 215 centimeters long fits.
The catch
Among the longest and widest boxes listed here, it calls for exact checks of hatch clearance and roof length.
Rhino-Rack, RMFT530A
Rhino-Rack MasterFit 530L
You get 18.7 cubic feet, with space for gear up to 210.8 centimeters long.
Pick this instead ifwhat decides it for you is maximum cargo volume
Key facts
- Capacity is 18.7 cubic feet.
- Gear up to 210.8 centimeters long fits.
The catch
With an 85-inch shell, hatch and roof length both need careful checking.
Yakima, SkyBox NX 18 XL
Yakima SkyBox NX XL
You can fit gear up to 195 centimeters long in its 18 cubic feet.
Pick this instead ifyour deciding need is the most cargo volume
Key facts
- Capacity is 18 cubic feet.
- It accepts gear up to 195 centimeters long.
The catch
200 cm Nordic skis are a little longer than its 195 cm ski limit.
Ready to buy
See today’s price and what owners say
Top pick for this job
Thule Motion 3 XXL
Capacity is 21 cubic feet.
See price & reviews on AmazonPick this instead if
Rhino-Rack MasterFit 530L
what decides it for you is maximum cargo volume
See price & reviews on AmazonWe may earn a commission from qualifying Amazon purchases. How we make money