Main trade-off
Yakima SkyBox NX XL
Its 195 cm ski limit is just short of 200 cm Nordic skis.
Head-to-head
Choose Force 3 XL for 200 cm skis. Choose SkyBox NX 18 for a published 24 to 40 inch spread and slightly better hatch clearance.
Before you choose
Yakima SkyBox NX XL has the stronger fit for “Fit bars set far apart” and “Fit a narrow crossbar spread”. Thule Force 3 XL has the stronger fit for “Keep the rear hatch clear” and “Carry long Nordic skis”.
What this is based on
This compares the current strong and useful fit assignments for the exact products. It does not turn them into one overall score.
Main trade-off
Its 195 cm ski limit is just short of 200 cm Nordic skis.
Main trade-off
The selected version is black matte, so choose Motion if a glossy shell is your preference.


Yakima SkyBox NX 18 XL and Thule Force 3 XL compared by volume and gear length, vehicle measurements, loading and hardware.
The practical choice turns on volume and gear length and vehicle measurements, then on the constraints in your own setup.
Winner by situation
Both records list “Opens from either side” for loading and hardware. Both records show the same result for “Loading and hardware”, so this row does not separate them.
Only passes when the measured front-crossbar-to-hatch distance exceeds the manufacturer's published clearance requirement.
Published maximum ski length is at least 200 cm.
The verified maximum center-to-center crossbar spread is at least 36 inches. Bar width and profile still need a separate fit check.
For volume and gear length, Yakima SkyBox NX XL records “18 cu ft. Gear up to 195 cm” and Thule Force 3 XL records “18 cu ft. Gear up to 200 cm”. Treat this as a hard limit on the size or amount that fits in one run. Shape can matter as much as the headline figure.
What matters in practice
Yakima SkyBox NX XL has the stronger fit for “Fit bars set far apart” and “Fit a narrow crossbar spread”. Thule Force 3 XL has the stronger fit for “Keep the rear hatch clear” and “Carry long Nordic skis”.
This compares the current strong and useful fit assignments for the exact products. It does not turn them into one overall score.
Both products cover the same 2 of 2 buyer requirements attached to this comparison. The choice moves to “volume and gear length” and “vehicle measurements”.
This checks the two products against the same selected needs, then names the first verified differences that remain.
12 of 26 checked roof cargo boxes cover both “Carry skis without folding the seats” and “Pack for a family of four”. Both products are in that group.
The count is reproduced by filtering the current category dataset for products with a strong or useful fit for both needs.

Yakima, SkyBox NX 18 XL
The box holds 18 cubic feet. It accepts gear up to 195 centimeters long.

Thule, Force 3 XL
The box holds 18 cubic feet. It accepts gear up to 200 centimeters long.
Meaningful differences
| What changes | Yakima SkyBox NX XL | Thule Force 3 XL | Why it matters |
|---|---|---|---|
| Volume and gear length | 18 cu ft. Gear up to 195 cm | 18 cu ft. Gear up to 200 cm | Treat this as a hard limit on the size or amount that fits in one run. Shape can matter as much as the headline figure. |
| Vehicle measurements | 24 to 40 in bar spread. 50 in hatch clearance | 21.875 to 36.625 in bar spread. 53.0625 in hatch clearance | Measure the available space and mounting points because this can be a hard fit constraint. |
| Loading and hardware | Opens from either side | Opens from either side | Both records show the same result for “Loading and hardware”, so this row does not separate them. |
What you give up
What matters in practice
Both hold 18 cubic feet.
Yakima is four pounds heavier but needs three inches less front clearance.
What the facts say
Useful conclusions from the current roof cargo boxes comparison, followed by the checked facts used to reach them.
12 of 26 models checked match every need here: “Carry skis without folding the seats” and “Pack for a family of four”.
12 matching models from 26 checkedMatch countThe count uses the current product-to-need assignments for “Carry skis without folding the seats” and “Pack for a family of four”. A need with no documented match does not count.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Yakima SkyBox NX XL |
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| |
| Thule Force 3 XL |
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Ready to choose?
Open either model on Amazon to check the current price, customer reviews and delivery options.

Fit a narrow crossbar spread
See price & reviews on Amazon
Keep the rear hatch clear
See price & reviews on AmazonLinks open in a new tab.