Thule Motion 3 XXL Roof Cargo Box — XXL Capacity, Aerodynamic Low-Profile, SlideLock Security

The Thule Motion 3 XXL is a large, aerodynamically shaped roof cargo box that adds generous, secure storage to your vehicle while minimizing wind resistance.

Built for travelers, weekend adventurers and families who need dependable extra space, the Thule Motion 3 XXL blends a sleek profile with practical operation and robust security features. Its elongated, wing-like silhouette helps reduce drag, while user-friendly mounting and locking systems simplify installation and daily use. The box ships ready to accept optional accessories that improve interior organization and protect gear from scuffs and dust.

How does the Motion 3 XXL reduce wind noise and fuel use?

The Motion 3 XXL is engineered with a forward-leaning, wing-shaped profile that guides airflow smoothly over the vehicle. This form factor lowers aerodynamic resistance compared with bulky, boxy carriers, which can translate to steadier handling and less impact on fuel economy during longer drives.

• Wing-shaped roofline for streamlined airflow
• Dynamic nose design to cut frontal drag
• Low-profile silhouette to limit wind uplift and noise

What makes the box easy to mount and remove?

Thule’s PowerClick quick-mount system gives a fast, tool-free attachment to roof bars and signals when the box is tightened correctly via an integrated torque indicator. The system speeds up fitting and helps ensure a secure connection to your crossbars every time.

• PowerClick clamps tighten quickly and clearly "click" at the right torque
• Designed for compatibility with most standard crossbar systems
• Lightweight enough for one-person handling during installation

How secure and convenient is access to your gear?

The Motion 3 XXL features a SlideLock mechanism that separates the locking from opening actions, automatically securing the lid in place and showing when the box is properly closed. A wide, ergonomic handle lets you open and close the lid smoothly with a single hand.

• SlideLock offers distinct locking and opening functions for safety
• Auto-lock indicator confirms lid closure for peace of mind
• Wide handle for controlled, one-handed operation

Can I customize the interior for different trips?

The Motion 3 XXL accepts several optional Thule accessories that let you adapt the cargo space by adding interior lighting, protective liners or a storage cover to keep items organized and shielded. These accessories help preserve sensitive gear and make packing more efficient.

• Optional interior box light for visibility when loading in low light
• Protective box liner to guard the shell and your gear from abrasion
• Storage cover for neat transport when the box is not on the roof

Who is this for: The Thule Motion 3 XXL suits drivers who require substantial, secure roof storage without compromising vehicle aesthetics or handling. It’s ideal for families heading on road trips, outdoor enthusiasts transporting bulky gear like sleeping bags or jackets, and anyone who needs a durable, easy-to-use carrier that accepts modular accessories for tidier packing. If you want a large-capacity box with thoughtful engineering for quieter travel and straightforward mounting, the Motion 3 XXL is built for that purpose.