Motion 3 L
16 cu ft • Dual-side- SlideLock + PowerClick
- Best for compact kits & shorter skis
- Great all-rounder size
Thule Motion 3 XL Cargo Box – 18 cu ft of Aerodynamic, All-Season Roof Storage
The Thule Motion 3 XL adds big, weather-protected capacity without extra noise or hassle. With dual-side opening, secure SlideLock latches, and the tool-free PowerClick mount, it’s a premium roof box for Canadian road trips, ski weeks, and multi-sport family adventures.
A sleek, low-drag shape helps minimize wind resistance and noise, while a forward mounting position improves rear-hatch clearance on many vehicles. Glove-friendly handles and lid lifters make opening and closing easy in real-world conditions.
Key Features & Specifications
- Volume: 18 cu ft (≈ 510 L) — swallows bulky kits for longer trips
- Opening: Dual-side lid access with SlideLock security and closure indicator
- Mounting: PowerClick quick-mount with built-in torque “click” for a secure fit
- Load Capacity: up to 165 lb (follow vehicle/rack limits; use lowest rating)
- Rack Fit: Works with most aero, square, round and factory crossbars within Thule bar-spread guidance
- Weight: two-person lift recommended for install/removal
- Model: Thule Motion 3 XL
Who It’s For (Target Audience)
Perfect for active families, skiers/snowboarders, campers and road-trippers who want more space than Motion 3 L without jumping to XXL. Great on SUVs and wagons running quality crossbars.
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- best Thule cargo box for ski trips, camping and family travel
Compare Thule Roof Boxes
Motion 3 XL (this page)
18 cu ft • Dual-side- More length/volume than L
- SlideLock + PowerClick
- Best for bigger family loads
Motion 3 XXL
21–22 cu ft • Dual-side- Max capacity and length
- SlideLock + PowerClick
- Best for extended trips
Motion 3 XL Low
Low-profile • Dual-side- Slim height for clearance
- Urban parking & low garages
- Best for lower rooflines
Pulse M
14 cu ft • Value- Great capacity-to-size ratio
- Passenger-side opening
- Best budget mid-size
Pulse L
16 cu ft • Value- Larger volume, rugged ABS
- Passenger-side opening
- Best value high-capacity
Thule Motion 3 XL – Frequently Asked Questions
How much gear fits in the Motion 3 XL?
About 18 cu ft (≈ 510 L) — more length and volume than Motion 3 L for skis/boards, duffels and family kits.
Is it easy to install and remove?
Yes. The PowerClick quick-mount “clicks” when tight, so you know it’s secure. Two people recommended for lifting on/off.
Can I open it from both sides?
Yes. It features dual-side opening with the SlideLock system that indicates secure closure.
Will the rear hatch clear?
On many vehicles, yes. The Motion 3 forward position improves hatch clearance—always check your rack/vehicle combo.
What’s the maximum load?
Up to 165 lb, but never exceed the load limits of your vehicle or roof rack system (use the lowest rating).
What crossbars will it fit?
Works with most aero, square, round and factory crossbars within Thule’s recommended bar-spread. Verify fit before purchase.