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Thule Motion XT Rooftop Cargo Box - 16 cu ft - Black Glossy

Thule Motion XT Rooftop Cargo Box - 16 cu ft - Black Glossy

Item # TH629706
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Our Price: $749.95
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Roof Box
This item qualifies for Free Truck Freight Shipping
Shipping Weight: 42 lbs
Thule Motion XT Rooftop Cargo Box - 16 cu ft - Black Glossy High Profile TH629706
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77 x 36 x 17. Roof box mounts to your crossbars with PowerClick clamps. Locking lid opens from either side of your vehicle. Great for carrying skis, snowboards, and other gear on sedans and crossovers. Durable ABS plastic construction. Lowest Prices for the best roof box from Thule. Thule Motion XT Rooftop Cargo Box - 16 cu ft - Black Glossy part number TH629706 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (214)
  • Q & A (166)
  • Photos
  • Why etrailer?

Thule Roof Box - TH629706

  • Aero Bars
  • Elliptical Bars
  • Factory Bars
  • Round Bars
  • Square Bars
  • Large Capacity
  • Thule
  • Medium Length
  • Black
  • High Profile
  • Dual Side Access

77 x 36 x 17. Roof box mounts to your crossbars with PowerClick clamps. Locking lid opens from either side of your vehicle. Great for carrying skis, snowboards, and other gear on sedans and crossovers. Durable ABS plastic construction.


  • Cargo box mounts on your vehicle's roof rack to provide enclosed storage for your gear
    • Perfect for carrying sports equipment and large luggage for up to 3 people
    • Great for sedans and crossovers
  • Dual-side-opening lid lets you load and unload gear from either side of your vehicle
    • Push buttons, outer handles, and internal lifters make it easy to open and close lid
  • SlideLock system with One-Key System locks ensure your cargo is secure
    • Lid locks automatically once it's completely closed
    • Red Indicators let you know if lid isn't closed securely
  • PowerClick quick-release clamps provide easy, tool-free installation on most crossbars
    • Simply turn dials until they click to secure the mounting clamps to your roof rack
    • Mounting assemblies adjust along tracks to accommodate different crossbar spreads
  • Aerodynamic shape helps minimize wind noise and drag
  • Tapered tail end provides superior hatch clearance
  • 3 Load straps and 6 integrated anchor points let you secure cargo inside the box
  • Durable, ABS plastic construction resists impacts, scratches, and UV rays
  • High-gloss black finish


  • Application: round, square, aero, elliptical, and most factory crossbars
  • Carrying capacity: 16 cu ft
  • Weight capacity: 165 lbs
  • Ski capacity: 5 - 7 pairs of skis
  • Snowboard capacity: 3 - 5 snowboards
  • Maximum ski/snowboard length: 175 cm
  • Exterior dimensions: 77" long x 36" wide x 17" tall
  • Interior dimensions: 69" long x 31-1/2" wide x 15" tall
  • Distance from top of crossbar to top of cargo box: 15-1/2"
  • Box weight: 42 lbs
  • Limited lifetime warranty

Note: Because of the size of this item, it ships via truck freight and only to the contiguous United States.

Thule SUP Taxi XT Crossbar Requirements

Thule Motion XT L Cargo Box

Cargo boxes, bags, and baskets are great for transporting gear on your vehicle's roof. A cargo box has the added benefits of an aerodynamic shape that reduces drag and wind noise, a hard shell to protect your gear, and a higher degree of weather resistance. And you can latch and lock a cargo box for added protection against theft.

The Motion XT L has 16 cu ft of storage space for golf bags, luggage, skis, snowboards, and other gear. The aerodynamic, low-profile design helps to reduce drag and wind noise, and the locking lid conveniently opens from either side of your vehicle. The box has internal tie-down points for securing cargo, and the PowerClick mounting system offers easy, tool-free installation.

Durable Construction

Thule Motion XT L Cargo BoxConstruction

This cargo box is constructed of durable ABS plastic that is lightweight yet rigid and impact resistant. It has a glossy black, gel-coat finish that is stylish and less susceptible to chips, scratches, and harsh UV rays when compared with paint.

Dual-Side-Opening Lid

Thule Motion XT L Cargo Box Dual Side Opening Lid

The Motion XT features a dual-side-opening lid so you can load and access your gear from either side of your vehicle. Integrated, grip-friendly handles help you easily open and close the lid even with one hand. The lid has lifters that ensure it opens and closes smoothly. There is also a convenient pull cord on the inside that helps you close the lid.

SlideLock System

Thule Motion XT L Slide Lock System

The cargo box has SlideLock locks on each side of the lid. These locks have built-in indicators that let you know if the box is properly latched. The keys cannot be removed from the locks unless the lid is closed and locked. This prevents you from driving with an open or unlocked lid. The locks include Thule One-Key-System cores so you can swap them out to make all your Thule accessories keyed alike.

PowerClick Mounting System

Thule Motion XT L Cargo Box PowerClick Mounting System

The box can be mounted on your vehicle in less than 5 minutes with the PowerClick mounting system. These clamps adjust along tracks in the floor of the box to accommodate different crossbar spreads.

Thule Motion XT XL Cargo Box Dials

To install the box, set it on your roof rack and center the clamps over your crossbars. Then simply turn the dials to tighten the clamps around the bars. The dials click when the clamps are secure.

Cargo Tie-Down Points

Thule Motion XT XL PowerClick Assembly

The PowerClick assemblies on the inside of the box have fixed anchor points for securing your cargo. Just loop the included cargo straps through the anchor points and pull the straps tight to secure your gear.

629706 Thule Motion XT L Roof Top Cargo Carrier - 16 cu ft - Black

Replaces Thule TH6297B and TH634B

Installation Details TH629706 Installation instructions

Customer Reviews

Thule Motion XT Rooftop Cargo Box - 16 cu ft - Black Glossy - TH629706

Average Customer Rating:  4.9 out of 5 stars   (213 Customer Reviews)

77 x 36 x 17. Roof box mounts to your crossbars with PowerClick clamps. Locking lid opens from either side of your vehicle. Great for carrying skis, snowboards, and other gear on sedans and crossovers. Durable ABS plastic construction.

- TH629706

Great looking cargo box. Would’ve given 5 stars but product came with a scratch around one of the plastic attachment covers (see pic). Looks to be a Thule quality control issue rather than a shipping issue. Otherwise, box and product appeared to be in new condition.

- TH629706

We recently used our Thule Motion XT for a trip around the country of around 5000 miles. We used it to haul two snowboards (longest 160 cm) and one set of skis and ski poles, along with all the other gear associated (bindings, boots, etc.). The car topper worked great and has more room that I would have imagined. It is easy to use, the dual side openings have been very helpful, and it is extremely sturdy and stable on top of our Rav4. It did affect the gas mileage somewhat (about 3 - 5 mpg; 35 down to 32), but it is difficult to say how much of that was due to the topper and how much was due to the added load and weight. Even on very windy days, the streamlined topper was no issue. I would highly recommend this to anyone. It is a bit on the pricey end, but it has been well worth it for us.

- TH629706

Took it from northern Wisconsin to Glacier Nat'l Park. Round-trip was over 3,500 miles. Solid as a rock. Did lose considerable miles-per-gallon, though. But that was doing 75 mph on the highways; bucking a substantial headwind, and with four adults in Toyota Highlander. Liked the fact that the key could not be removed unless the lid latched firmly. It was costly at about $800, but should last for years. etrailer bumped up my shipping by a couple days which was very much appreciated as our window for leaving was getting tight.

- TH629706

Works very well, stable at speed. Plenty of storage for camping equipment, especially bulky stuff like tents, camp chairs, and more. Easy to access from either side, depending on how you mount it. We have it mounted to factory bars on our Audi and it snugs up perfectly.

- TH629706

This is part TH629706 installed on a 2017 Subaru Outback.

- TH629706

This is a fabulous roof box! I don’t personally have anything to compare it to since it’s my first, but the bar has been set high. It’s lightweight and spacious. I haven’t filled the box yet with my family of four and I’ve only ever installed and removed it by myself. Solid purchase and very happy!

- TH629706

Overall I am thrilled with this product and with E trailer's and customer service!! Customer service and caring people are difficult to find nowadays. Yet right away somebody reached out to let me know that there was another option available for my cargo box to ship right away, or I could wait for the backordered item. They again reached out when it shipped and after delivery. The cargo box came well packaged and was a snap to install. Its such a beautiful desigb, it looks like a work of art! It holds my inflatable 2 person kayak, oars, an inflatable SUP, life jackets, pumps and more. Im so glad I purchased tbis and spent a little more on what I really wanted. E trailer's pricing made it a lot less painful to my budget.

- TH629706

Exactly what I needed. With the dog taking up the main cargo area of my 4Runner the back seat would get way overloaded with our gear. Now everything just goes in the rooftop box.

- TH629706

My box arrived in perfect condition and the staff was very helpful with options and updates. The 16 cu.ft. box met and exceeded my expectations. Well worth the price.

- TH629706

What a great experience! I spoke or corresponded several times with representatives about technical or ordering issues, and they were uniformly very helpful and courteous. They matched a small difference in price from another vendor and were really helpful in making the decision about what to buy. The Thule items are really high quality and, in spite of instructions that would make Ikea embarrassed, weren't difficult to assemble and install. (I recommend checking for relevant videos online.) I give etrailer.com and the parts an unqualified 5-star rating. One of my best online experiences ever.

- TH629706

It seemed a little flimsy when it was delivered. Couple of road trips with the last one driving in driving rain changed our minds. The ability to shed water keeping your goods dry and safe during bad weather conditions while on the road makes this cage box a great investment.

- TH629706

Container delivered by UPS semi-truck. Driver was patient as I opened cardboard with box-cutter. Outside box was slightly dented, which he noted. Inside, Thule Cargo Box was exactly as ordered, well padded, and covered in thin plastic sheath. When plastic was removed, Box was just as glossy and perfect as I had hoped. Kudos to etrailer.com for answering all my questions online and shipping in a timely manner.

- TH629706

Great service, communication, and a very fair price for the roof box. Would definitely recommend!

- TH629706

Great cargo box for sure. Some wind noise but that’s expected

- TH629706

This was my first purchase from eTrailer and it was a pleasant experience all around — from the order, to the shipping, to the product. I am happy I went with the Thule Motion XT L. I have a ‘21 Acura RDX and it is a perfect fit. The Thule Motion XT L looks great in the smooth, black, glossy finish. I’m looking forward to my next purchase from eTrailer.

- TH629706

Great carrier. Already paid for itself and it looks really sharp on our '19 RX.

- TH629706

Looks nice, works well, easy. I like that the key only unlocks the handle and does not move the opening linkage. Squeezing the opening handle mechanism moves the linkage and the key only enables the handle mechanism to be squeezed/operated.

- TH629706

Thank you for the prompt service! Ordered and delivered within a week! Wow! Other sites offering the same product couldn’t get this shipped until late December or January’! And it was super easy to install too. Thank you again.

- TH629706

This box is amazing. I really recommended it. In addition, etrailer`s infomation and purchase follow-up are perfect. Thank you so much.

- TH629706

Very easy to detach from the cross bars when not needed. This was the reason I wanted a Thule cargo box with the Power Click mount mechanism. The cargo box provides additional storage space and keeps gear out of sight which reduces the odds of someone breaking into our SUV while staying at a hotel for the night. FedEx Freight lost the cargo box for several days and Will at etrailer was very easy to work with and willing to send out a new unit if the original one was not found by FedEx. Etrailer is one of those rare companies that provides post sale support for their customers and why I prefer to buy from them.

- TH629706

Outstanding Customer Service. Ordered the day before Thanksgiving at 7pm EST and Alex answered on the second ring. He answered all my questions, completed my order and had this delivered the following Monday when everyone else in this pandemic says the Thule carriers are unavailable or 2 months out. My only mistake was not ordering the garage storage through etrailer so now I have to wait an additional week for delivery from another site. So for now I have my Thule under the Christmas Tree.

- TH629706

Works perfect with Porsche Macan. A lot of additional space.

- TH629706

Great product! Looks great too!

- TH629706

Some minor cosmetic issues with the cargo box upon arrival. There was a 6" scratch on top of the box. Not sure if this was a Thule issue or e-trailer issue as cargo box was shipped in original packaging. Called e-trailer customer service and they were extremely helpful and asked what I wanted to resolve issue. Since I needed product that weekend and it was only a cosmetic issue and asked for a credit and they had no issue agreeing to the credit and were very apologetic. Will definitely business with e-trailer in the future. Did not give 5 stars due to cosmetic issue.

- TH629706

It’s big and beautiful and more than enough room for all my needs. Customer service was great along the way and delivery guy was friendly and helpful. Thank you!

Show More Reviews

Ask the Experts about this Thule Roof Box

  • Comparing The Thule Motion XT Cargo Box Glossy Black To The Thule Force XT L Cargo Box Aeroskin
    The Thule Motion XT Rooftop Cargo Box - 16 cu ft - Black Glossy # TH629706 and Thule Force XT L Rooftop Cargo Box - 16 cu ft - Black AeroSkin # TH6357B are both really nice cargo boxes that can be opened from either side. They both install very simply onto crossbars by using the included clamps with rotating knobs so that no tools are required. Both boxes also have integrated tie-downs points to secure any belongings inside the box. That being said, the glossy paint on the Motion will...
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  • Can Two Different Malone Roof Racks Fit My 2020 Subaru Forester
    The only difference between the two Malone Airflow 2 Roof Rack is the length of the crossbars. One rack has 50" crossbars, part # MPG215, the other, part # MPG216, has 58" crossbars. Both of these racks will fit your 2020 Subaru Forester. You just have to decide what length crossbars you prefer. This happens all the time with roof racks, because most of the time you can go one size up in crossbar length. The reasons you might size up depend on what you want to carry. In the past, I never...
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  • Does Thule Motion XT Roof Cargo Box Fit Factory Crossbars of 2021 Acura RDX
    The Thule Motion XT Rooftop Cargo Box # TH629706 is a fit for the factory crossbars of your 2021 Acura RDX and would be a really great choice. There are bigger boxes that will fit the crossbars but the size of the Motion XT would be ideal for your size vehicle and would be a good balance between cargo carrying capacity and allowing the rear hatch to open.
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  • Will the Thule Motion XT Cargo Box Fit a 2021 Toyota Sienna with Factory Crossbars?
    The Thule Motion XT Rooftop Cargo Box - 16 cu Feet # TH629706 will allow you to fully open your rear hatch on your 2021 Toyota Sienna. As far as the compatibility with your factory crossbars, the Motion XT will fit your crossbars as long as they are 3-1/2 inches wide or less and 1-11/16 inches tall or less. In order to ensure the fitment on your crossbars, I recommend measuring these dimensions of the crossbars on your vehicle.
    view full answer...
  • Does Thule Motion XT Roof Cargo Box Fit 2018 Subaru Forester
    If your 2018 Subaru Forester has factory crossbars the Thule Motion XT Cargo Box part # TH629706 would fit directly without requiring additional roof rack components but if you do not have factory bars you would need to install an aftermarket set like the Malone AirFlow2 roof rack part # MPG215 which is a confirmed fit. This kit is very easy to install and you'd have no problem with it. I attached an install video for this rack on a similar 2018 Subaru Forester as yours for you to check...
    view full answer...
  • Recommended Thule Roof Cargo Box for a 2017 Chevy Equinox with Aeroblade Edge Roof Rack
    Yes. The Thule Force XT L # TH629706 is one of the cargo boxes that Thule recommends for use on your 2017 Chevy Equinox and is compatible with the Thule Aeroblade Edge Roof Racks # TH7501B-TH7501B. The Thule Force XT L requires a minimum of 23-5/8" bar spacing, so your 24" spaced bars are not an issue. You'll want to make sure that when mounting this box on your crossbars that you have 47-1/2" between the center of the back bar and the edge of the rear cargo hatch so that you still can...
    view full answer...
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  • Rooftop Cargo Box Recommendation for 2018 Chevy Traverse
    For a pair of adventurous adults with a 2018 Chevy Traverse I recommend the Thule Motion XT Rooftop Cargo Box # TH629706. This box offers a range of what I like to call quality-of-life features; it has a lid which opens on both sides, is aerodynamic to reduce the amount of wind noise, locks automatically when the lid is fully closed, and clamps easily to your roof rack with what are called PowerClick clamps so you only need to turn the dials until you hear a click, which lets you know the...
    view full answer...
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  • Thule Motion XT & Sonic XL Cargo Box Fits on 2007 Subaru Outback & 2013 Subaru Crosstrek
    It is easy to find out if the Thule Motion XT # TH629706 rooftop cargo box will fit your vehicles' factory bars and also allow your rear hatches to open without any interference. First, let's talk about bar fit. Both carriers have mounting hardware that will fit on factory crossbars up to 3-1/2-inches wide x 1-11/16-inches tall. Just measure your bars to confirm they are compatible with the mounting hardware. Second, we will consider the bar spread on each car. Both boxes work on...
    view full answer...
  • Will Thule Motion XT L Cargo Box Work With Yakima RailBar Crossbars
    The Yakima RailBar Crossbars are 3-5/8" wide so they will be too large for the Thule Motion XT Rooftop Cargo Box part # TH629706 which only works with crossbars up to 3-1/2" wide. That said, you can use the Thule AeroBlade Edge Roof Rack which is similar to the Yakima RailBar Crossbars but only 3-1/8" wide. The correct Thule AeroBlade Edge Roof Rack for a 2019 Volvo XC90 is part # TH7503-TH7503.
    view full answer...
  • Will the Thule Motion XT Cargo Box Fit on a 2021 Hyundai Santa Fe?
    Yes, the Thule Motion XT Rooftop Cargo Box # TH629706 will fit your 2021 Hyundai Sante Fe with a crossbar system. The Motion X will fit on top of your vehicle and allow you to access the rear hatch. If you need a roof rack, the parts you need depend on if you have factory flush rails or a naked roof on your vehicle. If you do not already have a roof rack, you will need to purchase one. If your vehicle has flush factory rails, I recommend the following parts: - Thule AeroBlade Edge...
    view full answer...
  • Roof Rack for Using Thule Motion XT Cargo Box on 2019 Toyota 4Runner
    There is a way to install the Thule Motion XT part # TH629706 on your 2019 Toyota 4Runner but since the factory crossbars of your vehicle are so low to the vehicle roof there isn't enough clearance for the clamps of this box to fit without interference. So Thule recommend you install one of their roof racks like the Thule AeroBlade Edge part # TH7503-TH7503 which will attach to the raised side rails and work great with the Hyper. This will also put the box up high enough that it clears...
    view full answer...
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  • 16 to 18 Cubic Foot Roof Top Cargo Box for a 2017 Subaru Outback Wagon with Factory Roof Rack System
    The primary measurement you'll want to take on your 2017 Subaru Outback Wagon is the distance from the center of your front crossbar to the rear of the vehicle where the roof meets the hatch. This is your maximum clearance, and any box you buy will have to have a minimum clearance of less than this amount. Going over this clearance means that you won't be able to use your rear hatch or not open it completely while the box is installed You can maximize your clearance by putting the...
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  • Lo Profile Cargo Box Options for a 2006 Toyota Highlander with Factory Roof Rack
    So basically you want to keep the overall height of the 2006 Highlander including the cargo box under 7 feet tall. If the height of the vehicle itself is 5 feet 9 inches tall then that leaves 15 inches to work with. Like you said you could use the SkyBox Lo, # Y07338, since it is 11-1/2 inches tall. You could also use: Thule Pulse Alpine, # TH613, at 12-1/2 inches tall Inno Wedge, # INBRM660BK or # INBRM660WH, at 11 inches tall Inno Shadow, # INBRA1150BK, at 11-3/4 inches tall Inno...
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  • Thule Motion XT Cargo Box Recommendation for 2016 Nissan Rogue with Thule Roof Rack
    The 2016 Nissan Rogue that you have is considered a compact SUV which means it's not the biggest vehicle out there but it has a decent sized roof and overall size. I'd go with the L size of the Thule Motion XT part # TH629706 which has 16 cubic feet of storage and overall measures 77" long x 36" wide x 17" tall. The picture I attached shows this box installed on a similar compact SUV to yours to give you an idea the overall look of it.
    view full answer...
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  • Will the Thule Motion XT Rooftop Cargo Box Fit Factory Crossbars on 2018 Chrysler Pacifica
    I checked with Thule and the Motion XT Rooftop Cargo Box # TH629706 referenced in your question will mount without issue onto the factory crossbars of your 2018 Chrysler Pacifica. I am not sure of the exact length for the factory bars on your vehicle, but the cargo box itself has an external width of 36 inches. You can take this measurement in from the side rails of the Pacifica to get a good idea of how much crossbar space will still be available with the box mounted. This is an extremely...
    view full answer...
  • Recommended Cargo Box for 2019 Toyota RAV4 That Doesnt Obstruct Roof Antenna
    In order to use the Thule Motion XT # TH629706 on your 2019 Toyota RAV4 you're going to need 47-1/2" from the center of your front crossbar to the crease where the roof and the hatch meet. However, it's going to be substantially less than that when it comes to the antenna, so using a long box like this likely isn't going to be the best solution because you're likely going to see some reception issues if it's covered. I recommend considering the Trunx Rooftop Cargo Box # TRX34FR, since...
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  • Compatibility of the Thule Motion XT L on a 2012 Jeep Grand Cherokee
    To determine if the Thule Motion XT L Cargo Carrier, # TH629706, will fit a 2012 Jeep Grand Cherokee, a couple measurements on your vehicle's roof will be needed. First, the Thule Motion will only fit on a crossbar spread between 23-5/8 inches to 36-7/8. Any distance shorter or wider than this range, then the Motion cargo carrier will not fit. To measure crossbar spread. measure the distance from the center of one crossbar to the center of the other. The second measurement needed...
    view full answer...
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  • Differences Between Thule Motion XT Cargo Boxes 16 Cubic Feet
    The part numbers have changed, so don't let that throw you as they are the same boxes. The difference between the Thule Motion XT part # TH629707 and # TH629706 is the color of the paint. The part # TH629707 is a glossy gunmetal gray color whereas the part # TH629706 is a glossy black. The part # TH629806 is the larger, black version of these boxes at 18 cubic feet compared to the 16 cubic feet of the other boxes. The part # TH629807 is the gray version of this as well.
    view full answer...
  • What Crossbar Spread Can Thule Motion XT XL Cargo Box Fit On
    The Thule Motion XT XL part # TH629706 that you referenced can fit a crossbar spread range of 23-5/8 inches to 36-7/8 inches.
    view full answer...
  • Which Size Thule Motion XT Cargo Box has Least Wind Resistance on a 2011 Subaru Tribeca
    For the Thule Motion you are correct about the 16 cubic foot models, # TH629706 for black or # TH629707 for silver, would be the best bet to limit wind resistance on your 2011 Subaru Tribeca. Another option is to use the Rightline hatch saddlebag # RL100B90. Since it is at the back of the vehicle it won't add any wind resistance. And yet another option is to install a trailer hitch, # 75716, and then use an enclosed carrier such as the Transporter # TH665C, Rola carrier # 59109,...
    view full answer...
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  • Internal Height Dimension of the Thule Motion XT Alpine Rooftop Cargo Box from Top of Base Ridge
    For the Thule Motion XT Alpine Rooftop Cargo Box - 16 cu ft - Black # TH629706 the interior dimensions are 84-1/2" long x 33" wide x 11-1/4" tall. Since the height appears to be an issue for garage door clearance, the distance from the top of your crossbar to the top of the box is 12-1/4 inches. I was able to confirm the interior height of 11-1/4 inches is from the bottom of the ridge on the underside, so from the top of the ridge the measurement is 10-3/4 inches. So you will have...
    view full answer...
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  • Thule Rooftop Cargo Box for 2017 Mazda CX-5 with Factory Rails and Crossbars
    Yes, indeed. Thule's Motion XT L rooftop cargo box # TH629706 is a confirmed fit on the factory roof rack crossbars on your 2017 Mazda CX-5. I verified this item's fit with Thule. This cargo carrier is an excellent choice since it is fairly lightweight (42-lbs) for its substantial 16-cubic-foot capacity; many similar-size cargo boxes weigh more. This is great not just for handling the box but also since it means more of your roof's weight capacity is left available for your actual cargo...
    view full answer...
  • Which Thule Cargo Boxes Will Fit a 2017 Mazda CX-9
    All of the Thule roof cargo boxes will fit the factory roof rack on your 2017 Mazda CX-9. If you are concerned about rear hatch clearance then there is a measurement you can take on the vehicle to determine which boxes will fit without hatch interference. First, if the crossbars on your roof rack can be moved, slide the front bar as far forward as it will go. Then with the rear hatch open measure from the center of the front bar straight back to the nearest part of the open hatch. If...
    view full answer...
  • Premium Roof Box Option for a 2018 Toyota Highlander with Factory Roof Racks.
    You'll want to take two measurements prior to purchasing a roof box, as the fit is somewhat unique to each vehicle. To get your available clearance, you'll want to measure from the center of the front crossbar to the line where your roof meets your rear hatch. This distance is your available clearance. The second measurement is the distance from the center of the front bar to the center of the rear bar. This distance is your Crossbar Spread and is the distance that you'll want to...
    view full answer...
  • What is the Crossbar Spread Allowed on the Thule Motion XT Rooftop Cargo Box
    The Thule Motion XT Rooftop Cargo Box, # TH629706, had a minimum crossbar spread of 23-5/8 inches and a maximum of 36-7/8 inches. To measure crossbar spread measures from the center of the front crossbar to the center of the rear crossbar.
    view full answer...
  • Thule Motion Rooftop Cargo Box Fit for 2014 Subaru Outback Wagon
    To determine the best Thule Motion cargo box for your 2014 Subaru Outback, you will want to measure from the center of the front crossbar to the seam where the hatch meets the roof. That distance will determine the larges box you can use and not have hatch interference. I've attached a photo to assist. The Thule Motion XT Rooftop Cargo Box - 16 cu ft # TH629706 requires 47-1/2 inches The Thule Motion XT Rooftop Cargo Box - 18 cu ft # TH629806 requires 51-1/4 inches The Thule Motion...
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  • Will the Thule Motion Cargo Box Fit the Factory Roof Rack on a 2011 Buick Enclave
    Yes, the Thule Motion cargo box, # TH629706, is a fit for the factory crossbars on your 2011 Buick Enclave. I have included a link to a video review of this box being installed on a similar vehicle with a similar roof rack for you. I also recommend using a tire step, # TH232, which will make accessing the box easier. Be sure to check the Enclave owner's manual and/or with Buick for the roof/roof rack weight capacity prior to loading.
    view full answer...
  • Thule Rooftop Cargo Box Fits on 2014 BMW X3 with Factory Crossbars
    For your 2014 BMW X3 with flush roof rails and two factory BMW side-to-side cross bars the cargo box Thule recommends is their Motion XT cargo box, either the gloss black # TH629706 or the gloss titanium finish version # TH629707. These will fit without hatch interference. Just make sure your bar dimensions do not exceed the maximum, 3-1/2-inches wide x 1-11/16-inches tall, and that their center-to-center spread is within the range from 23-5/8-inches to 33-inches. Also note that your...
    view full answer...
  • Do Roof Cargo Boxes Affect Satellite Radio Antenna on a 2015 Jeep Grand Cherokee
    The satellite antenna of your 2015 Jeep Grand Cherokee would not be affected by the installation of a cargo box like the Thule Motion XT # TH629706. Unless you are carrying something metal at the rear of the box you would not have any problems. I attached a link to the review video that shows the Motion XT being demoed plus a link to a page that has all of the demo videos we've done with cargo boxes on your 2015 Jeep Grand Cherokee.
    view full answer...

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  • Highest quality roof box for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate roof box information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Andrew K
Video by:
Andrew K
Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Colin H
Test Fit:
Colin H
Employee Matthew S
Written by:
Matthew S
Employee Daron K
Edited by:
Daron K
Employee Noah M
Updated by:
Noah M

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.