The 8 Best ATV Cargo Boxes of 2026

This is the least expensive box on the list, and it's shaped differently from the rest of them: 37 inches long, 17.5 wide, and only 13.5 tall. Laid flat across a rear rack it takes two XL helmets with room left for gloves and a tool roll, and it keeps a low profile instead of stacking your gear above the seat line and into the wind.

What your money buys is shell, not seats. The lid is double-walled and rigid enough to carry Kolpin's optional top rack, which adds tiedown real estate on a long trip, and the roto-molded polyethylene is UV-stabilized for a machine that lives outside. What it doesn't buy is padding, a backrest, or anything soft — this is a cargo box first and nothing else second.

Four quarter-inch U-bolts with sealing washers come in the box, and the install is a straightforward bolt-through on a tubular rack. At this price, fitting a second machine with one is an easy call, and it's the box we hand to someone who wants dry storage now and a passenger seat later.

Most of the boxes here sit behind the seat. This one goes on the front rack, and that changes what the machine can do: the load rides over the front wheels instead of hanging off the back, and the rear rack stays clear for a passenger seat, a hitch haul, or a bale of hay.

The tub is 2.3 cubic feet, which takes a day pack, a saw, and lunch without rearranging anything. Stainless steel keyed latches hold the lid down and lock it, weather stripping runs around the inside of the rim to keep gear dry, and all the mounting hardware for a tubular rack comes in the box. It's a polymer shell rather than a roto-molded one, so treat it as a cargo box and not a step.

The trade-off is where it sits. On a machine with a low hood, a box this size can crowd your view of the front wheels and the near-side ground, so dry-fit it and check the sightline from the seat before you drill anything. If the view stays clear, this is how you get a full cargo box onto a quad without giving up the rear rack — and that's a narrower set of options than it sounds.

The seat cushion measures 12 inches deep by 20 wide, with a lumbar pad above it at 15 by 8. That's a real perch rather than a lid with a pad stuck to it, and on a two-up machine it changes the whole ride: the passenger sits square behind you instead of clutching the rack on every corner.

Storage totals about 2 cubic feet across two compartments. The lower bin is the sealed, lockable one — 1.5 cubic feet behind a stainless lock with keys — and it opens from the front, so the person in the seat can reach gloves or a rangefinder without standing up. The upper box behind the seatback is where the wet stuff goes.

Mounting is universal to tubular racks, and everything you need ships inside the box, keys included. Plan on a 3/8-inch drill bit, which isn't in there, and dry-fit the round U-bolts against your rack tube before you drill — on thick tubes they can come up short, and a longer pair from the hardware store costs almost nothing.

The split is what makes this one worth its price. Gear that has to stay locked and dry lives in the front bin, gloves and a tow strap live behind the seatback, and the two never mix in a wet pile. It's the priciest of the seat-trunks here, but it's the only box on this list that treats the passenger and the cargo as two separate problems.

This box doesn't bolt down. It clicks into Can-Am's LinQ base, which is both the appeal and the catch: an Outlander L or a Renegade needs the matching LinQ base or luggage rack fitted first, and without it the box has nothing to clip to. Once that's on, the box drops into place and lifts off without a tool, which is the difference between leaving your gear on the quad overnight and carrying it inside.

Forty-five liters is the part to weigh. The flip-over cover becomes a shallow tray, and that's the smartest small feature on any box here — gloves, a thermos, and a phone stay within reach instead of buried, and the tub underneath keeps them clean and dry. What it isn't is roomy. Forty-five liters is modest next to the 31-gallon trunks on this list, and at this price you're paying for the latch system as much as the plastic.

Eight inches tall is the number that matters here. Most of the boxes on this list stack gear well above the rack line; this one lies flat at 34 by 18 by 8, so it stays out of your rearward view and doesn't turn the back of the quad into a wall you have to lean around at every gate.

That low profile is a trade, not a free lunch. Eight inches of depth means a full-face helmet won't go in and a tall cooler won't either — this is the box for tow straps, tools, a small cooler, and rain gear. It also isn't rated for water resistance, so anything that can't get wet belongs in a dry bag inside it. It costs more than the Kolpin Trail Box while carrying less.

What you get back is 13 pounds of box that mounts with a couple of bolts and takes up almost nothing of your sightline. The shell is thin enough to flex when you lift the lid from one corner, and there's no strut to hold it open — those are the corners cut to hit the weight. What's left does exactly what a low-profile trunk should: it holds the small stuff and then disappears behind you.

At 115 liters, the NOMAD is the biggest trunk on this list by a wide margin. Two motocross helmets fit with room left over, the two compartments keep a wet tow strap away from a dry jacket, and the lid doubles as a passenger seat with grab handles that a second rider will actually use on a long day.

The size is also the whole problem. It measures 43 by 30 by 17 inches and weighs 34 pounds empty, so it takes two people to set it on a rack, and at 30 inches wide it wants a full-size machine underneath it. This is a box you fit once and leave on — lifting it off at camp isn't part of the routine.

Where it earns its place is a dedicated two-up trail machine that goes out for full days. The seat is comfortable enough that a passenger stays put, the compartments sort wet from dry, and the universal fit covers most of the major brands. If you trailer your quad and swap boxes between machines, the weight and width make it the wrong choice; if the box lives bolted on, the capacity is worth both.

Two helmets of storage, a padded backrest, and a padlockable hatch for less money than any other seat-trunk on this list — that's the pitch, and it mostly holds up. The seat is 12.5 inches across, the hatch opens wide enough to reach in without unpacking the whole box, and the shell is UV-stabilized polyethylene that shrugs off a season in the weather. It weighs 25 pounds, so one person can set it on a rack.

What you give up is stiffness. The shell is the lightest of the seat-trunks here, and it flexes under a hand more than the roto-molded boxes do. On a utility quad hauling feed and fence tools at walking pace that never comes up; on rocky trails at speed, the extra money for a heavier box is money well spent.

Setup has two quirks worth knowing before you start. The supplied U-bolts are sized for common rack tubes and come up short on thicker ones, so a longer pair from the hardware store belongs on the shopping list. And on some racks the box tips forward at the front edge — a shim under the front gets it sitting level before you tighten anything down.

The argument for it is simple: no other box here puts a padded seat and a two-helmet trunk on the machine for this kind of money. That's enough for a working quad, a hunting lease, or a machine the kids ride around the pasture — and those are the buyers this one is built for.