Best Rooftop Cargo Boxes for 2025–2026 Toyota 4Runner: 6 Picks for Factory Bars and Trailhunter

The GrandTour 16 is the all-round box for a 6th-gen 4Runner on factory bars. Yakima lists it at 79 x 35 x 18 in with 16 cu ft, a 51.5 lb box weight and a 24 to 36 in crossbar spread, the widest range of any Yakima 16 here. That range matters on this truck, because factory crossbars can sit only where the rails allow, and owners on 4Runner6G.com report having to move bars a position to fit a box. The 18 in depth swallows camp chairs and bulky duffels, it opens from both sides, takes skis and boards up to 185 cm, and comes with SKS locks and a limited lifetime warranty at $709.

The weight math is comfortable but not generous. Against the 165 lb dynamic figure owners cite, a 51.5 lb box leaves about 113 lb before the bars, so plan on roughly 100 lb of gear on factory crossbars. At 79 in it is shorter than the CBX 16 and the Motion 3 XL, which helps keep the tail clear of the hatch, but measure front bar to hatch seam before you tighten the clamps. The 18 in height is the one number to check if you park in a garage.

The Thule Force 3 L is the box to choose if you want Thule's hardware and the most weight left for gear among the full 16s here. Thule lists it at 76.8 x 33.3 x 16.8 in with 16 cu ft, a 43 lb box weight and a 165 lb maximum load. It opens from both sides, clamps on with PowerClick mounts and locks with SlideLock. Thule also publishes a front-clearance figure of more than 50 5/8 in to avoid hatch contact, which gives 4Runner owners a number to measure against instead of guessing. It takes 5 to 7 pairs of skis up to 175 cm and costs $879.95 at Thule.

On the 6th-gen, 43 lb leaves about 122 lb of the 165 lb dynamic figure before bars, the most of any 16 cu ft box here except the MasterFit. The box's own 165 lb rating matches the roof and the Thule raised-rail kit, but the roof figure still covers bars and box, so the real gear allowance is lower. The trade-offs are price, about $170 more than the GrandTour, and shorter skis. Thule's page doesn't list a crossbar spread or warranty terms, so confirm both before you order.

The Yakima CBX 16 is the box that suits the 4Runner's trail image: a rugged-looking shell, internal tie-down points and a flattened floor for boxy gear. Yakima lists it at 83 x 38 x 15 in with 16 cu ft, a 57 lb weight and a 24 to 35.5 in crossbar spread. It opens from both sides, comes with SKS locks and a removable torque-limiting knob, takes skis and boards up to 185 cm, and Yakima quotes about a 10-minute install. It costs $699 at Yakima with a limited lifetime warranty.

The 15 in height is a real advantage on a tall truck, 3 in lower than the GrandTour. Weight is the trade-off: at 57 lb it leaves about 108 lb of the 165 lb dynamic figure before bars, and on a heavy platform that drops fast, so this box suits factory or aftermarket crossbars better than a steel platform. It is also 83 in long, so mount it well forward and measure from the front bar to the hatch seam. At 38 in wide it takes most of the bar length, leaving little room for a bike mount beside it.

The Thule Motion 3 XL is the pick for long skis and big family trips. Thule lists it at 18 cu ft (500 L) with exterior dimensions of 84.7 x 35 x 17 in, a 51 lb box weight, a 165 lb maximum load and room for 5 to 7 pairs of skis up to 200 cm. It opens from both sides with one hand, and Thule publishes a front-clearance figure of more than 52 3/32 in to avoid hatch contact. Thule lists it at $1,149.95. This Amazon listing is a Limited Edition finish, so confirm the color and price against Thule's box.

On the 6th-gen 4Runner, 51 lb leaves about 114 lb of the 165 lb dynamic figure before bars, which is fine for skis and jackets but not for 18 cu ft of dense gear. The length is the bigger check: at 84.7 in it is the longest box here, so measure front bar to hatch seam against Thule's 52 3/32 in figure. etrailer lists a 21-13/16 to 36-9/16 in spread for the larger Motion 3 XXL; confirm the XL's range with Thule before mounting it on factory bars.

The Rhino-Rack MasterFit 440L is the light box for owners who run a platform or plan to add one. Rhino-Rack lists it at 440 L (15.5 cu ft), 76 x 32 x 17 in, with a 38.6 lb box weight and a 75 kg (165 lb) maximum load. It opens from both sides with a key lock and three locking points, needs a crossbar spacing of 620 to 930 mm (about 24.4 to 36.6 in), and Rhino-Rack lists it for Vortex, Euro, Thule square and aero bars, and its Heavy Duty bars with the RUBK-MF kit. It carries a 5-year warranty.

On the 6th-gen, 38.6 lb leaves about 126 lb of the 165 lb dynamic figure before bars, more than any other box here. That margin matters most on a platform, where the rack's own weight comes off first: on a roughly 50 lb Sherpa Capitol, the MasterFit still leaves around 75 lb for gear. At 76 in it is among the shorter boxes here, which helps at the hatch. Rhino-Rack's page doesn't list a price, so compare on the listing.

The SportRack Vista XL gives the most space for the least money. SportRack lists it at 63 x 38 x 19 in with 18 cu ft, UV-resistant ABS, tool-free mounting hardware and a lock, for $449.95, and says it fits square and round bars and most factory racks. At 63 in it is the shortest box here, so hatch clearance is rarely a worry. etrailer lists three fixed mounting positions, 25-7/8, 27-7/8 and 29-7/8 in center to center, so your factory bars need to sit at one of them.

The unknowns are weight and rating. SportRack's page doesn't publish a box weight or a load rating, and 18 cu ft can hold much more than the roughly 100 lb of gear the 165 lb figure allows, so confirm the weight on the listing and pack light, bulky items. The lid opens at the rear, which means reaching up over the back of a tall truck, so keep a step handy. At 19 in it adds the most height here.