Note: This article contains affiliate links. If you click on these links and make a purchase, I may earn a small commission at no extra cost to you. This helps support my research and content. Read my full affiliate disclosure here.
If you own an Infiniti FX35 and need more space for luggage, sports gear, or trip essentials, choosing the right rooftop cargo box can transform how you travel. The correct box increases usable storage without crowding the cabin and helps keep weight balanced for safer drives.This guide highlights five shortlisted rooftop cargo boxes selected for fitment with the Infiniti FX35. We evaluated each option for capacity, mounting compatibility, aerodynamic profile, and ease of installation to help you decide which style suits your needs. Read on to find the best fit for your typical trips and cargo types.
Looking for other parts? See all Infiniti FX35 parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | TUFFIOM 13.4 cu ft Hard Shell Rooftop Cargo Box with Dual-Side Opening and Locks |  |
| Best Quality Built to a higher standard if you want something more solid | VISRACK Hard-Shell Rooftop Cargo Box, 15.5 cu ft, Dual-Side Opening |  |
| Most Sold A high-volume bestseller chosen again and again | GarveeTech 14 Cubic Foot Hard-Shell Rooftop Cargo Box (Dual-Side Opening) |  |
| Best Value for Money The sweet spot between price and what you get | Perflex Exclusive 17.7 cu ft Hard-Shell Rooftop Cargo Box |  |
| Best Overall The best all-around choice for most situations | Yakima SkyBox NX XXL Rooftop Hard Shell Cargo Box with SKS Lock |  |
1. TUFFIOM 13.4 cu ft Hard Shell Rooftop Cargo Box with Dual-Side Opening and Locks
| Material | ABS |
|---|---|
| Max. Storage Volume | 13.4 cubic feet |
| Max. Loading Capacity | 150lbs |
| Opening | Dual-side |
| Water Resistance Level | Waterproof |
The TUFFIOM rooftop cargo box is a budget-friendly hard-shell carrier designed to add roughly 13.4 cubic feet of secure, weather-resistant storage to a roof rack. It mounts to crossbars and is intended for routine travel use like weekend trips, beach gear, or dog supplies. Notable features include dual-side opening for easier loading from either side, keyed locks on both sides for extra security, and an ABS shell that resists rain and dust. Installation is straightforward for someone comfortable with simple hand tools and the box is light enough for one person to lift onto the roof of an SUV like the Infiniti FX35. On the downside some users report alignment and fitment fiddliness with the supplied U-bolts and occasional stiffness opening the lid until the gas lifts break in. There are also a few reports of durability problems at mounting points after extended heavy use, so careful installation and periodic checks are advised. For drivers who prioritize adding reliable, protected cargo space without a large price premium, this box performs well for everyday travel needs.
Best for: Reliability-focused buyers who want a practical, weather-resistant rooftop carrier to add secure cargo space to an Infiniti FX35 for regular travel without paying premium brand prices.
Less Ideal for: Buyers who need maximum long-term heavy-duty durability or frequent high-speed highway use with maximum load capacity should consider a heavier-duty, higher-end carrier instead.
- Dual-side opening makes loading and unloading convenient from either side of the vehicle
- Integrated locks with keys secure belongings while parked or in transit
- ABS hard shell provides weather resistance against rain and dust
- Light enough for one person to handle during installation and removal
- Some users report misaligned mounting holes and fiddly U-bolt installation
- Initial opening can be stiff until gas lifts and hinges break in
- Occasional reports of cracking or wear at mounting points after heavy use
Verdict A practical, weather-resistant rooftop box that adds secure storage to an Infiniti FX35 at an affordable price but requires careful installation and occasional maintenance to avoid wear at mounting points.
2. VISRACK Hard-Shell Rooftop Cargo Box, 15.5 cu ft, Dual-Side Opening
| Water Resistance Level | Waterproof |
|---|---|
| Mounting Type | Roof Mount |
| Item Volume | 15.5 Cubic Feet |
| Shell Type | Hard |
| Automotive Fit Type | Universal Fit |
This VISRACK rooftop cargo box is a weatherproof hard-shell carrier designed to add substantial luggage space to vehicles. With 15.5 cubic feet of internal volume and a dual-side opening, it lets you load and access gear from either side of the car and makes securing bulky items easier. It mounts to most crossbars without tools using the supplied brackets and includes a keyed lock for added security. The shell is molded from ABS/PMMA materials for a glossy finish that resists the elements and the manufacturer rates a 130 lb load capacity suitable for luggage, camping gear, and disassembled bicycles. Practical benefits include easy installation, convenient side access for passenger-side or curb-side loading on the Infiniti FX35, and solid weather sealing reported by users. Limitations to consider are the added aerodynamic drag and slight fuel economy hit when installed, the need to remove the box for automated car washes, and the mounting system uses U-bolt style hardware that can be slower to clamp down than higher-end proprietary clamps.
Best for: Performance-oriented Infiniti FX35 owners who prioritize secure, high-capacity rooftop storage for road trips and weekend gear and value easy access and weather protection.
Less Ideal for: Drivers who need a permanent rooftop solution with minimal aerodynamic penalty or who prefer the fastest clamp-on systems for repeated removal and reinstallation should consider other high-end options.
- Large 15.5 cu ft capacity increases usable cargo without sacrificing passenger space
- Dual-side opening improves loading flexibility and access from either side of the Infiniti FX35
- Waterproof hard-shell construction protects gear from rain and road spray
- Tool-free assembly to crossbars with supplied mounting brackets and included keyed lock
- Mounting uses U-bolt style clamps that are less quick to attach than premium quick-release systems
- Adds aerodynamic drag and typically reduces fuel economy by a measurable amount
- Box must be removed before automated car washes to avoid damage
Verdict A roomy, weatherproof hard-shell box that gives Infiniti FX35 owners reliable, dual-side access storage at a value-oriented quality level.
3. GarveeTech 14 Cubic Foot Hard-Shell Rooftop Cargo Box (Dual-Side Opening)
| Water Resistance Level | Waterproof |
|---|---|
| Mounting Type | Roof Mount |
| Shell Type | Hard |
| Automotive Fit Type | Universal Fit |
| Maximum Capacity | 165 LBS |
This hard-shell rooftop cargo box is designed to expand the FX35’s storage for road trips and weekend gear by clipping to the vehicle’s crossbars. It installs with four quick-connect anchors and adjustable clamps that fit a wide range of crossbar widths and spacings, and the aerodynamic shell aims to cut wind noise and drag while driving. Dual-sided opening gives convenient access from either side of the Infiniti, and an integrated lock with two keys secures contents when closed. Practical benefits include waterproof protection, a capacity rated for heavier loads, and a lightweight enough build for one person to lift onto the roof. Limitations to be aware of are component quality variability reported by some buyers, particularly plastic locks and hardware that may wear sooner than premium-brand parts, and the need to confirm the FX35’s crossbar spacing falls within the box’s specified range before purchasing. Expect good value and useful extra cargo space if you accept potential longevity trade-offs compared with higher-end boxes.
Best for: A risk-averse mainstream buyer who wants a practical, lower-cost way to add secure, weatherproof cargo capacity to an Infiniti FX35 for family trips and occasional long drives.
Less Ideal for: Not the best choice for buyers seeking a lifetime, heavy-commercial-duty solution or those who prioritize premium-brand durability and metal hardware under constant heavy use.
- Waterproof hard-shell design protects luggage from rain and UV exposure
- Dual-sided opening for easy access from either side of the vehicle
- Quick-mount anchors and adjustable clamps simplify installation on roof crossbars
- Aerodynamic shape reduces wind noise and can help limit fuel consumption
- Some customers report lower-quality plastic locks and hardware that may fail with heavy use
- Fit requires checking crossbar width and spacing limits before purchase
Verdict A value-oriented, waterproof hard-shell box that adds substantial locked storage to an Infiniti FX35 but may use lower-cost hardware compared with premium brands.
4. Perflex Exclusive 17.7 cu ft Hard-Shell Rooftop Cargo Box
| Item Volume | 500 Liters |
|---|---|
| Item Volume (cu ft) | 17.7 Cubic Feet |
| Mounting Type | Roof Mount |
| Weight Capacity | 130 Lbs |
| Water Resistance Level | Waterproof |
This Perflex Exclusive rooftop cargo box gives an Infiniti FX35 a practical, low-profile way to add substantial luggage space for weekend trips or seasonal gear. It mounts to crossbars without tools and arrives fully assembled so you can fit it to the FX35's roof rack quickly. The hard ABS shell is described as impact and UV resistant and the box is rated waterproof with a central lock system and four keys for security. Dual-side opening makes loading skis, duffel bags, or soft gear from either side of the vehicle much easier, and the 17.7 cu ft volume plus a 130 lb capacity handles typical family loads. Expect slightly more wind noise and increased drag at highway speeds because of any rooftop carrier, and some buyers report occasional latch or hinge issues that may require customer service. For an FX35 owner who wants an affordable, roomy, factory-quality-looking storage solution that installs fast, this box is a sensible option.
Best for: Practical optimizers who drive an Infiniti FX35 and want a roomy, ready-to-install rooftop solution to free up interior space for family trips or outdoor gear.
Less Ideal for: Buyers who frequently need ultra-low drag or maximum fuel economy, or those who prefer a soft cargo bag that stows away when not in use.
- Large 17.7 cu ft (500 L) capacity provides substantial extra cargo space for trips
- Tool-free, universal roof-mount hardware ships fully assembled for fast installation on FX35 crossbars
- Dual-side opening simplifies loading and unloading from either side of the vehicle
- Weather-resistant hard ABS shell with central locking and four keys for added security
- Adds aerodynamic drag and some wind noise at highway speeds
- A few reports of latch or hinge problems require replacement parts or support
Verdict A cost-effective, roomy hard-shell carrier that fits the Infiniti FX35 well and gives reliable, weather-resistant extra storage for weekend trips with an easy, tool-free install.
5. Yakima SkyBox NX XXL Rooftop Hard Shell Cargo Box with SKS Lock
| Shell Type | Hard |
|---|---|
| Capacity | 22 cu ft |
| Access | Dual-sided opening |
| Security | Integrated SKS locks |
| Automotive Fit Type | Universal Fit |
The Yakima SkyBox NX XXL is a 22 cu ft hard-shell rooftop cargo box built to carry bulky travel and outdoor gear on an Infiniti FX35. It mounts to factory-quality crossbars and gives dual-sided access so you can load and unload from either side of the vehicle, which is handy when parked tight or when accessing items with the rear hatch closed. The flattened floor and roomy interior make it practical for suitcases, skis, and camping equipment, while integrated SKS push-button locks add theft deterrence on the road. Installation requires two people because of the box length, and some users report the lid can feel a little flexible when opened and that very large sizes may interfere with hatch clearance on certain SUVs. The construction and clamping hardware are solid and quiet in motion, and the NX nano-texture finish keeps the box looking tidy on the roof. For Infiniti FX35 owners who need maximum cargo space for family trips, it provides reliable, weather-resistant storage with convenient side access.
Best for: A balanced all-round buyer who values maximum usable cargo space and convenient access for family road trips or outdoor adventures on their Infiniti FX35.
Less Ideal for: Buyers who prioritize minimal roof profile or who frequently need full rear hatch clearance should consider a smaller box or alternative cargo solutions.
- Very large 22 cu ft capacity suitable for long trips or bulky gear
- Dual-sided opening for easy access from either side of the vehicle
- Integrated SKS push-button locks for improved security while parked
- Flattened interior floor yields usable space for suitcases, skis, and soft bags
- Quiet on-road performance and secure clamp mounting to crossbars
- Extra-large length makes installation a two-person job and may block hatch opening on some SUVs
- Lid can feel slightly flimsy when propped open and tricky to latch when fully loaded
- Occasional damage in transit reported by buyers requiring returns or replacements
Verdict If you need large, secure, dual-side access storage for an Infiniti FX35, the SkyBox NX XXL delivers usable space and solid hardware, but check hatch clearance and plan for two-person installation.
Choosing the Right Infiniti FX35 Rooftop Cargo Box: Key Factors to Consider
Fitment and Mounting Compatibility
Fitment ensures the cargo box attaches securely to the Infiniti FX35 roof crossbars and clears the vehicles roofline and rear hatch. Confirm the internal mounting channel spacing and clamp range match your crossbar profile to avoid loose connections or the need for special adapters.
Consider how the box sits relative to the windshield and rear hatch to prevent interference when opening the liftgate. Properly matched mounting hardware reduces installation time and keeps the load stable at speed, which improves driving safety and reduces wear on both the box and the crossbars.
Capacity and Internal Layout
Capacity determines how much gear you can carry and often dictates whether a single box will replace multiple interior items. Review the stated capacity in liters as a baseline, but also examine internal shape and usable volume since tapered or narrow areas can limit real-world packing.
Think about the types of items you usually carry. Long items like skis or folding items like strollers benefit from continuous internal length, while bulky soft goods do better with wider, boxy interiors. An organized internal layout makes loading faster and helps distribute weight evenly across the vehicle roof.
Aerodynamics and Wind Noise
Aerodynamic design reduces drag and wind noise at highway speeds, which affects fuel efficiency and cabin comfort. Sleeker, tapered profiles that sit low on the roof tend to produce less turbulence than tall, boxy shapes.
Also check how the box integrates with the crossbars. A gap between box and bars can create additional noise. Prioritizing a streamlined silhouette is especially important if you do long-distance driving or frequent highway travel.
Material and Shell Durability
Shell construction affects longevity and weather protection. Hard-shell boxes typically use strong, UV-resistant plastics that stand up to road salt, sun exposure, and impacts better than softer materials.
Inspect the stiffness of the shell and the quality of hinge areas, as these components are stressed during opening and closing and while underway. Durable materials also preserve the boxs fit over time, ensuring seals remain tight to keep moisture and dust out.
Access, Security, and Ease of Use
How you open, close, and lock the box matters for convenience and safety. Dual-sided opening or wide lids make loading simpler, especially when parked tight to walls or other vehicles. Smooth, well-supported hinges reduce the effort needed to lift heavy lids.
Integrated locking systems with reinforced hasps add theft resistance and keep contents secure when unattended. Consider whether the box allows safe one-person operation and whether the hardware is intuitive for quick trips.
Weight and Roof Load Considerations
The combined weight of the box and cargo affects handling and should stay within the Infiniti FX35 roof load rating. Lighter boxes increase usable payload before you reach the vehicles maximum, while heavy boxes reduce the amount of cargo you can carry.
Also consider the distribution of weight along the crossbars. Evenly spread loads reduce stress on mounting points and improve stability. Review the manufacturers guidance for recommended maximum cargo weight and factor that into your packing practices.
FAQ
How do I know if a rooftop cargo box will fit my Infiniti FX35?
Check the boxs mounting specifications against your FX35 crossbar profile and spacing. Measure crossbar width and the distance between bar centers, and compare those numbers to the boxs clamp range. Also verify the box height and rear clearance so the liftgate opens fully without contact.
Can I install a rooftop cargo box by myself?
Many boxes are designed for single-person installation, with easy clamps and clear instructions, though a second person makes positioning simpler. Practice aligning the clamps and tightening gradually to ensure a secure, centered fit. Always follow torque or tightening guidelines from the box manufacturer.
What should I consider about weight limits when loading a rooftop box?
Observe both the cargo boxs payload rating and the Infiniti FX35 roof load limit. Account for the boxs own weight when calculating remaining capacity. Distribute heavier items toward the center of the box and over the crossbars to keep the center of gravity low and reduce stress on mounts.
Will a rooftop cargo box affect fuel economy or handling?
Yes, added roof-mounted cargo increases aerodynamic drag and raises the vehicles center of gravity, which can reduce fuel efficiency and subtly affect handling. Opting for a more aerodynamic box and keeping loads moderate helps minimize these effects during highway driving.
How do I maintain a rooftop cargo box to ensure longevity?
Rinse or wipe down the exterior regularly to remove road grime and salt, and inspect seals and hinges for wear. Lubricate moving parts per the manufacturers recommendations and check mounting hardware before long trips to ensure bolts and clamps remain tight.
How We Chose the Best Infiniti FX35 Rooftop Cargo Box
We focused on rooftop cargo boxes that pair with the Infiniti FX35 roof crossbars and that meet buyer priorities for space, security, and usability. Our selection criteria prioritized secure mounting systems compatible with the vehicles roof geometry, measured internal capacity to reflect true storage potential, and evaluated shell construction for durability and weather resistance. We also considered aerodynamic shape to reduce wind noise and drag, user-friendly opening mechanisms for loading and unloading, and overall weight to avoid overburdening the roof.Excluded items included soft bags and temporary trunk-mounted solutions, products that rely on nonstandard or vehicle-specific adapters, and units with unclear capacity or mounting specs. The remaining picks represent options that balance reliable fitment, practical capacity, and day-to-day convenience for Infiniti FX35 owners.
Our full evaluation process is outlined in our review methodology.
Conclusion
Choosing the right rooftop cargo box for an Infiniti FX35 comes down to matching fitment, capacity, and practical usability. Prioritize boxes that clearly list compatible mounting ranges, offer the internal volume you need, and feature durable construction and user-friendly access.Balance the tradeoffs between a sleek, aerodynamic profile and maximum cubic space, and keep roof load limits in mind when packing. With the right combination of mounting compatibility and capacity, a rooftop cargo box will expand your hauling options without compromising daily convenience or vehicle safety.
Explore More:
- Check out all Infiniti FX35 parts & accessories
- Explore Exterior Accessories
- Browse all Accessories
