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  • Thule Force Cargo Box
  • Thule Force Cargo Box Detail
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ThuleForce Cargo Box
Sale 30% Off$363.97 - $440.97

Item # THU0396

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  • One Color, L ($384.97)
  • One Color, XL ($412.97)
  • One Color, XXL ($440.97)
  • One Color, M ($363.97)
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Item # THU0396

Unnatural vehicle enhancement.

Your gear gets wet, muddy, smelly, and covered in snow. Keep it out of your car with the Thule Force Cargo Box. The Force is available in four different sizes to accommodate your needs according to the size of your car, your family, and your habit. The Force also opens and locks from either side of the box for added convenience.

  • A rooftop rack for containing the fallout of alpine adventures
  • Opens from either side for convenient loading and unloading
  • Lid textured for durability and aerodynamics
  • Includes locks so your gear doesn’t wander off
  • Compatible with square, round, and factory bars
Tech SpecsWeight
Tech Specs
ABS plastic
[M] 65 x 34.5 x 16 in, [L] 74 x 36 x 16.5 in, [XL] 84 x 34.5 x 17 in, [XXL] 92.5 x 36 x 18 in
[M] 13 cu ft, [L] 16 cu ft, [XL] 17 cu ft, [XXL] 21 cu ft
round bars, square bars, factory bars
Locks Included
Part Number
[M] 624, [L] 628, [XL] 625, [XXL] 626
Recommended Use
Manufacturer Warranty

Claimed Weight

Claimed weights are provided by the vendor.

Have questions? Chat with a Gearhead

[M] 35 lb, [L] 39 lb, [XL] 44 lb, [XXL] 56 lb

Reviews & Community


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Great Box, Should Have Purchased The XL

  • Familiarity: I've used it several times

I purchased the Large and after using it a few times, wish I had gone with the XL, but only because my skis are in the 190cm range which is pushing the limits. The external length measurement of the box shows 74" which puts the internal length at about 72". Other than this, the box is easy to install, mounts securely to a variety of cross bars, opens from either side, and has been a great storage addition to my car.

Just what I was looking for.

  • Familiarity: I've put it through the wringer

Bought this for use primarily on a truck bed rack to expand dry and secure storage capability on road trips with doggo and fam in the cab. Bought the large, and it fits the bill perfectly. You can fit four full-sized duffels in this thing no sweat, along with other assorted small items. Lots of space. Super easy to mount - I only put it on for trips, as the truck doesn't fit in the garage with this hat on. No big deal, takes about five minutes to throw it on.

Just what I was looking for.
Avg. ride time: 2h 21m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Give your Roadtrip a Boost

    I've driven across country too many times to count and while my brave little toaster (Honda Element) is spacious, there are times when it's been a bit tight. The Thule Force was the perfect upgrade to give us a little extra space in the car, without impacting gas mileage or creating too much of a to-do.
    The box mounts SO QUICKLY! Even the first time, from boxed up to on the car was less than 15 minutes. The clamps are easy to adjust to get the box in the position that works for you. My car's roof is relatively narrow, so I have it centered.

    I really love that this box opens on both sides--I often travel solo, and being able to access the box from the driver's side is really convenient. The Force is the perfect addition to your car, for those extra bags on a weekend trip to moving across country. I have the medium length, and it's been a great amount of added storage.

    Unanswered Question

    Will this fit Yakima Jetstream Crossbars?


      I purchased this after my fiance drove my car with my cargo box into our garage! Im glad she did that because this is a huge upgrade. I was able to install without help or instructions (we hate instructions right?) in less than 5 minutes. Really appreciate that it comes with the locks and the fact that it opens from both sides. Super easy to adjust and move, which is awesome for when I need to get kayaks up top.

      A necessity for outdoorsy types!

      • Familiarity: I've put it through the wringer

      I got tired of Tetris-ing the gear of four people into the back of my 2004 Nissan Xterra every time I went on a climbing or camping trip, so I decided I needed some extra cargo space. This box has been perfect! I purchased the Large size, and it has been just right for fitting a couple extra packs and tents up top, and opening up lots of leg room in my vehicle. I was worried that the Large would look a little funky and clunky on my roof, but it actually has a really great, sleek look! The way its designed, from its shape to its Aeroskin texture, really seems to help reduce drag and road/wind noise, and it hasn't made any noticeable impact on my MPG's. Mounting the box on my roof rack was a breeze, as the box is light enough for me to take it on and off by myself, and the clamps are totally secure once properly tightened. I love that it opens from both sides, and includes two keys as well!

      If you need some extra space in your ride, don't hesitate to pick one of these up!

      A necessity for outdoorsy types!

      So much space!

      • Familiarity: I've used it several times

      Recently bought this for my Subaru Outback. It is extremely easy to install (5 mins). The fact that it loads and unloads on either side is super convenient. I bought the Large and it is plenty big. We are able to put our Thule Chariot Double Stroller in the top along with other items. It doesn't add any noticeable sound while driving and didn't seem to affect my gas mileage on a road trip much at all.

      Dreams do come true!

      • Familiarity: I've put it through the wringer

      I've had my eye on this roof box for so long and when I finally got it, it did not disappoint! Being able to clear up space in my car has been so nice for road trips. It adds a ton of storage and takes a way a whole lot of headaches. It was incredibly easy to install on my roof rack and literally took less than 5 minutes. I love that it can be opened on either side making it super easy when you need to grab something. and the locks are super secure i've never had to worry about someone trying to take something that isn't theirs. So happy with this box! I have a nissan rogue and got the size large and it works perfectly!

      Unanswered Question

      I have a 2000 Mercedes S500 sedan with factory roof cross-bar. Will this box fit and not interfere with the trunk opening? Does anyone else have the same car with this box mounted? Any excessive wind noise?

      Standard Equipment

      • Familiarity: I've put it through the wringer

      I bought the force XL cargo box as supplemental storage for my families honda CRV. With this bad boy we no longer have a completely full vehicle which makes driving way safer, and finding our stuff in the car much easier. The XL is big enough to fit all types of skis/snowboards/camping gear, and can also fit bouldering pads in it as well. HIGHLY RECOMMENDED!!!

      Gigantic cargo holder!

      • Familiarity: I've used it once or twice and have initial impressions

      I'm doing a cross country (basically a continent?) trek to Alaska from Virginia. I needed something huge to fit all of my stuff (I purchased the XXL). This is far bigger than I expected and I am super excited about it! Very lightweight and I like that the clamps just go onto my roof rack with a simple turn of the knob. To be honest, not that I don't trust it, but I have decided to use some tie down straps for extra security. Doesn't make any sound while I am driving and it doesn't seem to influence my driving at all!

      Uber Greatness

        Got this bad boy for my uncle. He drives uber and wanted to be able to help out those with skis, boards and travelling with other large items. His feedback - It's incredibly easy to install (Did it myself). Almost too long for the 2011 Pilot EX. Haven't noticed a huge difference in gas mileage.

        Uber Greatness
        Unanswered Question

        How about Nordic skis? I have 200cm skis in a carrying bag. Would either of these be big enough to fit without "squishing" the skis? Also, I have a Kia Soul. Are they too big?

        I have 170cm skis,what's the internal length of the XL?

        The internal length of the XL is roughly 210cm, so that will fit your skis Zambranojl

        Also, the max length of ski for the L is a 173cm. If you know you will never carry skis longer than 173cm ,you could make that one work

        Will the XL Force fit on my Mazda CX5?

        As long as you have factory installed crossbars then it will fit. If you have a naked roof or a roof railing then you will need to purchase a crossbar system as well.

        What is the "free gift with purchase?"

        It's an adapter system for the Switchblade crossbar system. Just a small accessory to the box that you won't actually need unless you have Switchblades on your car (a separate product from Thule).

        I don't see the weight of the carrier in...

        I don't see the weight of the carrier in the technical specs. How heavy is the XXL? I'm thinking here of storage options and ease of taking on and off my vehicle.

        Disregard, it looks like Full says 56 pounds for the XXL


        • Familiarity: I've put it through the wringer

        This cargo box is easy to take on and off, it's aerodynamic and simple to use. Opens from both sides and fits tons of stuff in it. I use it for skis plus cargo in the winter and I put pretty much everything in it in the summer.

        Great product!

        • Familiarity: I've put it through the wringer

        Very spacious and surprisingly quiet. We have used it over 20 times for several days of use. Easily handles 4 snowboards and 4 carry on size suitcases and a couple of backpacks. Sold the snowboard rack and no more stuffing the cargo area! Easy on and off and we keep it in the rafters when not in use. Solid purchase perfect size for our family!

        Good looking, Quiet, easy fit

        • Familiarity: I've used it once or twice and have initial impressions

        Purchased this with the intent of carrying camping gear... Used it finally and was very suprised that it hardly affected MPG. I have this mounted to Yakima Whispbar system and it mounts fast and secure.

        Con: While loading (stuffing) the box full I did have some difficulty locking it, but if you don't try to overstuff it you will be fine.