Thule Force XT L Roof Box
Quick Verdict
Road trips, car camping, ski/snowboard outings and family or group gear hauling where extra rooftop storage is needed
People without roof racks, ultralight or solo backpackers, or anyone needing to carry very long skis/boards (>175 cm) or frequently mount/unmount solo
Key Specifications
About This Gear
The Thule Force XT L Roof Box is a spacious and durable storage solution for family camping trips. Its aerodynamic design reduces wind noise and drag, while the dual-side opening allows for easy access to your gear. The only downside is that it requires a roof rack system to install, which may be an additional expense.
Pros & Cons
Synthesized from expert reviews and user feedback
What People Love
6 positive findingsVery large cargo capacity (450 L) suitable for luggage, camping gear and multiple skis/snowboards
Everyone agreesEasy, largely tool-free installation via PowerClick clamps with audible click torque indicator
Everyone agreesDual-side opening for convenient loading/unloading in tight parking situations
Most reviewersAerodynamic matte ABS design reduces wind noise and limits fuel-economy impact
Most reviewers
Things to Consider
7 considerationsHeavy to lift (18.7 kg / 41 lb), usually requires two people to mount or remove safely
Most reviewersRelatively high price (MSRP ~ $799.95; street typically $600–800)
Most reviewersLock/LockKnob can be finicky if lid isn't perfectly aligned; forcing it risks damage
Most reviewersSome users note the lid/top feels thinner compared with older or more premium Thule models
Some reviewers
Weather & Conditions
How this gear performs across different environments and seasons
Temperature Range
Performs best in moderate temperatures; ABS construction has broad tolerance, tested below freezing and above 38°C without issues
Weather Performance
Climate Suitability
Excels In
- keeping gear dry in rain and snow
- highway travel with reduced noise
- moderate temperatures and coastal environments
Limitations
- Requires roof rack; additional cost if not already fitted
- May conflict with low-hinge rear hatches or sunroofs; measure clearance before purchase
- Internal length limit (~177 cm) prevents carrying very long skis/boards
- Heavy to mount for one person if used daily
What People Are Saying
Aggregated insights from expert reviews and user feedback
Users are largely positive about capacity, ease of installation, weatherproofing and long-term durability; the most common negatives are weight, price, and occasional lock/knob quirks.
What Users Love
- easy setup
- durable build
- large capacity
- weatherproof
Common Concerns
- heavy to lift
- expensive
- lock can be finicky
- may not fit very long skis
- Many long-term owners report no leaks or failures even after 20,000+ miles
- Minor minority note the lid feels thinner than older Thule models but no systematic failures reported
true to size
Limited lifetime warranty; generally positive reports about Thule support and no recalls found for this model
Expert Reviews
This is an above-average product that is very spacious and easy to useRead full review →
A quality all-rounder with a versatile shape for skis and camping gear; ranked among the top cargo boxesRead full review →
Easy to open and install; maintained integrity and weatherproofing over 20,000 milesRead full review →
Care & Maintenance
Keep your gear performing at its best with these tips
Maintenance Tips
Keep it in top condition- Store flat on its back, not upright
- Keep clamps and hardware clean; rinse salt off in coastal environments
- Wipe seals and use silicone grease if gasket stiffens; replace gasket if leaks appear
Watch Out For
Known issues to monitor- Lock/key damage from forcing the lock when lid is misaligned
- Gasket wear or hardening after extended wet-season use
- Mounting clamps/screws can loosen over time if not periodically checked
Alternatives to Consider
Compare with similar products that might better fit your needs
Thule Motion 3 (e.g. Motion 3 XL Low)
- more expensive (~$300+ more)
- SlideLock metal lever and external handle
- slightly higher capacity and premium finish
Choose when you want a premium, smoother locking system and refined aerodynamics despite higher cost
Frequently Asked Questions
Common questions about this gear