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  • Thule Sidekick Cargo Box
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ThuleSidekick Cargo Box

Item # THU0039

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  • One Color, One Size ($299.95)
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Item # THU0039

A little extra cargo space on your roof.

The Thule Side Kick is the smallest rooftop cargo box that Thule makes. This clamshell style box's shape and size make it perfect for carrying golf clubs and camping gear without monopolizing your roof space. The Side Kick is made of impact resistant polyurethane, and keeps your gear safe and secure with the included locks. The Side Kick will mount to almost any rack system, be it Thule, Yakima, or factory.
Tech SpecsWeight
Tech Specs
54 x 25 x 15.5 in
Locks Included
Recommended Use
a little more junk in the trunk
Manufacturer Warranty
1 year

Claimed Weight

Claimed weights are provided by the vendor.

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16 lb

Reviews & Community


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Good Box

    Putting it together was a hassle, you will need atleast 2 people to do so. But once its put together it is a great cargo box. Looks good and gets the job done. Has enough space for camping gear but no enough space for skis and snowboards!

    I had to drill in a few extra holes. The pre drilled mounting holes were a little too small for my cross bars (factory subaru)

    Perfect Box.

    • Familiarity: I've put it through the wringer

    I purchased this cargo box for a cross-country move in my small sedan and it was perfect for adding a little more storage. I was concerned about it surviving the trip because it was pretty flimsy feeling in material, but once mounted and filled it was surprisingly stable and did not flop around. It also survived very strong winds and very heavy rains on this lengthy drive. Overall I was quite pleased with my purchase and knowing how well it did on this drive I would recommend this to someone looking for a little more space. Do note the sizing however as it is far too small to fit skis, boards, or anything of size inside.

    I should warn that the initial assembly is a bit of a pain, but the good news is you probably only have to do it once. It took two people to hold everything in place to assemble, but was easily mounted by one once done.

    Expensive little box

    • Familiarity: I've put it through the wringer

    I have had this box for about seven years. I agree that the assembly process was less than fun but not a deal breaker. The main appeal of the box for me was the size. I just wanted additional cargo space and this fit the bill. As far as quality goes, I would agree with most reviewers that it is pretty flimsy for the price tag! One of the ball and socket joints on one of the hinges on my cadet separated so the box lid no longer holds itself open on the back half of the box. Not a huge inconvenience but it never should have happened. Also I had to drill additional holes on the underside of my box in order for it to fit the luggage rack spacing on my bars. This apparently voids the warranty. Thank goodness, I have never had to get any service from Thule. Would I buy this product again, nope! Would I recommend it to a friend, nope. Has it served its purpose sure so I guess it just depends on what you need.

    I love it.

    • Familiarity: I've used it several times

    It was a little difficult to put together but the box is great. It hold a surprising amount of stuff in it and I didn't notice any strange noises when driving on the freeway. I also like that is fits well with my smaller car.

    Its Crap

      $15.00 worth of parts, about a buck spent on engineering, and zero on quality control. Thi s unit consits of two pieces of thin plastic, two hinges, four u-clamps, and two locks that froze in the locked position after just one year. For something without very many parts, it was very hard to put together. Sure, you can put your golf clubs in it, so long as the golf course you're going to is a par 3 and all you need is a 3-iron, 7-iron and putter! It can all be yours for JUST $260!!

      how many cubic feet of storage?

      how many cubic feet of storage?

      This Thule carries 8 cubic feet or up to 75 lbs of cargo.

      Write your question here...Does this box...

      Write your question here...Does this box fit on a 2004 Hyundai santa fe

      What are the dimensions of the sidekick...

      What are the dimensions of the sidekick cargo box?

      would this fit the mazda 5 2009 model

      would this fit the mazda 5 2009 model

      Yes--assuming you have a rack on top. If you have a factory rack, though, you need to double check Thule's website ( to ensure the brackets will be wide enough to fit over your crossbars. The brackets that come with this box are designed to fit round, square and most factory crossbars, but check the website just to be sure.

      will it work with a four door ford...

      will it work with a four door ford focus?

      Will this fit on a LExus GX470? Also what...

      Will this fit on a LExus GX470? Also what kind of accessory do I need to mount this. Thks.

      Go to, then use the Rack your Car feature. Or call customer service, they can figure it out for you.

      I have a Subaru Legacy. Will this work?

      I have a Subaru Legacy. Will this work?

      Thule's fitment guide is hard to get answers on. You'll probably have to e-mail them for a good answer. Use this address to ask, and they will answer by e-mail.

      Will this work with a 1997 Land Rover...

      Will this work with a 1997 Land Rover Discovery series 1 factory roof rack system?

      As long as you have somewhat standard crossbars, you won't have any problem.

      How much does this cargo box weigh? My...

      How much does this cargo box weigh? My factory installed roof-rack bars say that they support up to 100 lbs. Do I need to order different bars, or is the box itself pretty lightweight?