Thule Motion XT XXL: spacious rooftop cargo box for family road trips

The Thule Motion XT XXL rooftop cargo box adds up to 22 cubic feet of extra space on your vehicle roof, aiming at families and outdoor travelers who need secure, aerodynamic storage for longer journeys in the US market.

Responsible: ad hoc news Classics & Long-sellers Desk. Reviewed prior to publication on June 14, 2026 at 6:49 PM ET. Details in the imprint.

The Thule Motion XT XXL rooftop cargo box is one of Thule Group AB's best-known hard-shell roof boxes, designed to add generous cargo capacity while keeping an aerodynamic profile for everyday vehicles and family SUVs. It offers up to approximately 22 cubic feet (610 liters) of volume, giving room for multiple large suitcases, camping gear, or bulky sports equipment on longer trips. In the US, the Motion XT line is widely available through online retailers and specialist car-rack dealers, typically positioned in the premium segment of rooftop cargo solutions. For drivers planning summer vacations or winter sports travel, the XXL size targets users who want maximum roof storage without stepping into commercial or custom solutions.

Large-volume rooftop box with focus on ease of use

Thule markets the Motion XT series as a combination of high load volume, easy handling, and improved aerodynamics compared with earlier generations of cargo boxes. The XXL variant is among the largest in the lineup, with a long, wide footprint designed to fit mid-size to large vehicles, including many crossovers and SUVs that can support its length and load. According to Thule's product information, the box features an optimized shape intended to reduce wind resistance and noise, which is particularly relevant for US interstate driving at higher sustained speeds. Compared to basic plastic roof boxes, the Motion XT XXL sits in a different price bracket, but aims to justify this with build quality, design, and user-friendly mounting hardware.

A core element of the Motion XT design is Thule's quick-mount system, which allows drivers to clamp the box onto compatible roof rack crossbars from above without tools in regular use. The system typically incorporates torque-limiting functionality that gives feedback when the clamps are sufficiently tightened, helping users avoid both under- and overtightening on their vehicle's rack. For many US customers, this type of mounting solution can be crucial because the box may be installed and removed multiple times during the year, depending on seasonal travel plans and everyday parking constraints.

Thule also equips the Motion XT XXL with a dual-side opening lid, allowing access from either the passenger or driver side of the vehicle, depending on the parking situation. The lid is supported by integrated struts and hinge mechanisms, keeping it stable while loading or unloading on uneven ground. A central locking system typically secures the box at multiple points, and Thule designs the key mechanism so that the key can only be removed when all locking points are properly engaged. This approach is intended to reduce the risk of drivers accidentally leaving the box partially open before heading out on the highway.

In line with Thule's broader product philosophy, the Motion XT XXL is tested in the company's internal facilities for durability, including exposure to ultraviolet light, extreme temperatures, and mechanical stress. The brand promotes a focus on long-term use for multiple years of seasonal travel, aiming to spread the higher purchase price over many trips. While precise US MSRP figures can vary by retailer and promotions, the Motion XT XXL typically sits in a premium price band above many entry-level cargo boxes from smaller manufacturers, yet below highly specialized adventure or expedition carriers. For buyers who see the box as a multi-year investment, its positioning aligns with Thule's reputation for durable vehicle accessories in the US and European markets.

Within Thule Group AB's portfolio, the Motion XT line is an important pillar in the long-running category of rooftop cargo solutions aimed at families, outdoor enthusiasts, and skiers who want to extend their vehicle storage without upgrading the car itself. These classic roof boxes complement the company's bike racks, roof racks, and sports carriers, giving dealers a broad catalog of cross-selling options to US consumers focused on travel and recreation. Shares of Thule Group AB (SE0006422390, ticker THULE) last traded at a price quoted on a European exchange; the company does not have a primary US listing on NYSE or Nasdaq.

Thule Motion XT XXL at a glance

• Product: Thule Motion XT XXL
• Manufacturer: Thule Group AB
• Category: Classic rooftop cargo box (classic/long-seller)
• Launch date: Around the late 2010s, as part of the Motion XT series
• MSRP / Price: Premium price tier for rooftop boxes in the US; exact street prices vary by retailer and promotions
• Availability: Widely available through US online retailers and car-rack specialists; check current stock with authorized dealers
• Target audience: Families, road-trippers, skiers, and outdoor travelers needing large, secure roof storage
• Key feature / USP: High-volume, dual-side-opening rooftop box with quick-mount hardware and aerodynamic design

This article was created with a.i. assistance and editorially reviewed. Product information is provided without warranty; prices and availability may change at any time. Not investment advice, not a buy or sell recommendation. Trading in securities carries risks up to the total loss of capital.