Is it worth the price over cheaper alternatives?

Name: Thule Force XT L Roof Box
Brand: Thule
SKU: 1686716672853x459176192961001660
Price: 879.95 USD
Availability: InStock
Rating: 3.5 (1 reviews)

For frequent campers and families, the Force XT L’s build quality, reliable mounting system, weatherproofing and convenience often justify the premium; budget buyers who need occasional volume may prefer cheaper SportRack or similar models.

Our Pick

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Thule

Thule Force XT L Roof Box

AI-RESEARCHED INSIGHTS

Quick Verdict

Great For

Road trips, car camping, ski/snowboard outings and family or group gear hauling where extra rooftop storage is needed

Not Ideal For

People without roof racks, ultralight or solo backpackers, or anyone needing to carry very long skis/boards (>175 cm) or frequently mount/unmount solo

Very large cargo capacity (450 L) suitable for luggage, camping gear and multiple skis/snowboards

Heavy to lift (18.7 kg / 41 lb), usually requires two people to mount or remove safely

$879.95

Seasonal discounts around Black Friday/Cyber Monday, REI sales and occasional vendor promotions can drop price $100–200

Community Rating:

Key Specifications

Model Update

Weight

39 lbs(624 oz)

Ultralight

Capacity

75 kg

Packed Size

190 x 84 x 46 cm (external assembled dimensions)

Materials

UV-resistant matte ABS plastic shell, reinforced internal ribs, metal/aluminum clamps and brackets, rubber seals

Colors Available

matte black

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 findings

Very large cargo capacity (450 L) suitable for luggage, camping gear and multiple skis/snowboards
Everyone agrees
Easy, largely tool-free installation via PowerClick clamps with audible click torque indicator
Everyone agrees
Dual-side opening for convenient loading/unloading in tight parking situations
Most reviewers
Aerodynamic matte ABS design reduces wind noise and limits fuel-economy impact
Most reviewers

Things to Consider

7 considerations

Heavy to lift (18.7 kg / 41 lb), usually requires two people to mount or remove safely
Most reviewers
Relatively high price (MSRP ~ $799.95; street typically $600–800)
Most reviewers
Lock/LockKnob can be finicky if lid isn't perfectly aligned; forcing it risks damage
Most reviewers
Some 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

Best Seasons4 season gear

springsummerfallwinter

Temperature Range

-22°FMin rated

14°F - 100°FOptimal comfort

158°FMax rated

ABS shell tolerates roughly –30°C to +70°C (about –22°F to 158°F); users reported reliable performance from below freezing to 38°C, though the matte-black interior can heat up in direct sun.

Weather Performance

Rain

Humidity

Wind

Snow

Heat

Climate Suitability

Desert / AridExcellent

Alpine / MountainExcellent

CoastalGood

Humid SubtropicalGood

TemperateExcellent

Excels In

secure, weatherproof transport of gear in rain and snow
aerodynamic, quiet highway performance and large 450 L capacity

Limitations

heavy to lift and mount (18.7 kg) making single-person frequent mounting impractical
internal length limits (fits skis up to ~175 cm / internal 177 cm) so very long gear won’t fit
lock/LockKnob can be finicky if lid not perfectly seated
must be stored flat (not vertically) to avoid warping; gasket can stiffen in extreme cold

What People Are Saying

Aggregated insights from expert reviews and user feedback

Community Consensus

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

Durability Notes

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

Sizing Info

true to size

Warranty & Support

Limited lifetime warranty; generally positive reports about Thule support and no recalls found for this model

Expert Reviews

OutdoorGearLab

70/100

This is an above-average product that is very spacious and easy to use

Read full review →

Switchback Travel

A quality all-rounder with a versatile shape for skis and camping gear; ranked among the top cargo boxes

Read full review →

Halfway Anywhere (long-term test)

Easy to open and install; maintained integrity and weatherproofing over 20,000 miles

Read 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

No known recalls or safety issues

Alternatives to Consider

Compare with similar products that might better fit your needs

Thule

Thule Motion 3 (e.g. Motion 3 XL Low)

Key Differences

more expensive (~$300+ more)
SlideLock metal lever and external handle
slightly higher capacity and premium finish

Consider this when

Choose when you want a premium, smoother locking system and refined aerodynamics despite higher cost

Yakima

Yakima SkyBox / SkyBox Pro Series

Key Differences

often lighter
different latch/handle ergonomics (metal twist-knob options)
similar or slightly smaller capacity at lower price

Consider this when

Choose if you prefer Yakima’s latch/handle design and slightly lighter, often cheaper options

SportRack

SportRack Vista XL

Key Differences

significantly cheaper (~half the price)
lower build quality and single-side opening
less secure locking and fewer mounting conveniences

Consider this when

Budget pick for occasional use when cost and volume are priorities over build quality and locking

These alternatives were identified based on similar features, use cases, and price range to Thule Force XT L Roof Box.

Frequently Asked Questions

Common questions about this gear

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Last updated May 20, 2026

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