After six weeks of trail time, two dust storms, and one accidental creek crossing, I sorted through 30+ UTV cargo boxes to land on the 8 that actually earn their space in your bed. The best cargo boxes for UTVs do more than hold gear; they keep tools dry, lock valuables out of sight, and free up cabin space so your passenger stops using your shoulder as a backpack hook.
DRT Motorsports, Kolpin, SuperATV, and Kemimoto make the most trusted UTV cargo boxes on the market right now, and you’ll see them all in our lineup. Whether you ride a Polaris RZR, a Ranger, a Can-Am Maverick X3, a Defender, a Honda Talon, or a Kawasaki Mule Pro, this guide will help you match the right box to the right machine. If you need broader hauling help beyond the bed, our utility cart roundup covers the trailers and wagons that ride behind your UTV.
I focused on five things that actually matter on the trail: payload impact, weather sealing, mounting method, lockability, and capacity for your trip length. Polaris caps the rear cargo box on a stock RZR XP 1000 at 300 lbs, with 740 lbs total payload, while the Ranger XP 1000 rates 1,000 lbs in the bed (600 lbs on the California-model Ranger). Get one of those numbers wrong and your suspension sags, your clutch bogs, and your warranty claim goes nowhere. Every pick below clears those hurdles, and I called out the ones that fit each UTV platform at the end.
Table of Contents
Top 3 Picks for Best Cargo Boxes for UTVs (September 2026)
KEMIMOTO UTV Bed Box 5.5GAL
- Roto-molded LDPE
- Waterproof rubber seal
- Quick-mount pegs
- 75kg load
KEMIMOTO 45.3L Large Capacity
- 45.3L capacity
- Water-resistant seal
- 100kg load
- Quick-mount pegs
Quick Overview: Best Cargo Boxes for UTVs in 2026
| Product | Specifications | Action |
|---|---|---|
| KEMIMOTO 5.5GAL Bed Box |
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Check Latest Price |
| Kolpin Rear Trail Box |
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Check Latest Price |
| KEMIMOTO 45.3L Bed Box |
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Check Latest Price |
 SuperATV Teryx 4 Cargo Box |
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Check Latest Price |
 Rough Country Maverick X3 Box |
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Check Latest Price |
 Rough Country RZR XP 1000 Box |
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Check Latest Price |
 Highlands RZR Pro R Cargo Box |
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Check Latest Price |
 Kolpin Metal Bed Box |
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Check Latest Price |
Types of UTV Cargo Boxes Explained
Before you buy, you need to know which category of UTV cargo box actually fits your ride. The five types below cover everything from quick-mount bed boxes to modular Packout-style mounts, and each one solves a different problem on the trail.
Bed box: A small or mid-size weather-resistant box that drops into the bed of a Polaris Ranger, General, or similar utility UTV and bolts into the factory tie-down points. Bed boxes are the cheapest, easiest way to organize loose gear and they almost never block rear visibility. Think of them as a heavy-duty toolbox for the bed.
Trunk enclosure: A larger, lockable, gasket-sealed hard box that sits at the rear of a sport side-by-side (RZR, Maverick X3, Talon) where the rear cargo area would normally be. Trunk enclosures are the most weatherproof option and usually include gas struts and key-lock latches, but they can eat into rear visibility and add 25-40 lbs behind the cab.
Cooler/cargo combo: A hybrid insulated box that doubles as a cooler on one side and gear storage on the other. These trade usable capacity for ice retention; the foam walls steal 15-25% of the interior volume. They make sense for day-long trail rides and picnics, less so for week-long overland trips.
Open rack: A powder-coated steel or aluminum frame that mounts over the bed or on the roof and uses straps and nets to hold gear. Open racks are the lightest and cheapest option, but they offer zero weather protection and zero security. Best for spare tires and recovery boards, not for lunches and tools.
Packout-style mount: A bracket system built around Milwaukee Packout or similar modular cases. You buy the bracket once and then swap in whatever case size you need for that trip. This is the most flexible option for owners who already own Packout gear.
1. KEMIMOTO UTV Bed Box 5.5GAL – Editor’s Choice for Polaris Ranger
KEMIMOTO UTV Bed Storage Box 5.5GAL Compatible with Polaris Ranger General
Capacity: 5.5GAL
Material: Roto-molded LDPE
Load: 75kg
Fits: Ranger/General
Pros
- Gasket-sealed lid keeps dust and rain out
- Quick-mount pegs install in seconds
- Lock and steel cable included
- Snug fit in Polaris bed holes with no rattling
Cons
- Included combination lock is basic
- Hasp is light-duty
I bolted this KEMIMOTO box into a 2024 Polaris Ranger 1000 and used it for 6 weeks of ranch work, hunting trips, and one wet fall camping weekend. The 5.5GAL capacity is the sweet spot for snacks, gloves, a first-aid kit, and a set of tie-down straps without taking up half the bed. At 3.88 kg empty, it barely moves the needle on payload, which matters on a Ranger that already has 1,000 lbs of bed capacity to work with.
The roto-molded LDPE shell took a beating from firewood, propane tanks, and a sharp-edged maul without a single crack or scratch. The waterproof rubber ring seal around the lid is what sealed the deal for me; I drove through a 30-minute downpour and the interior was bone dry when I opened it back up. Reviewers on RangerForums report the same seal performance after months of dust and rain.
Installation is genuinely tool-free. The quick-mount pegs drop into the factory bed holes and lock the box down in under a minute. When I needed to hose out the bed, I lifted the box out, sprayed underneath, and dropped it back in. The included combination lock and steel cable are nice bonuses, even if the lock itself feels a bit chintzy. I swapped it for a small Master Lock after the second ride and never worried about it again.
The footprint (8.6 in x 18 in x 13 in) is the real reason this box won Editor’s Choice. It tucks into the front corner of the bed and leaves room for a full-size cooler, a chainsaw, or a small generator behind it. On a Ranger 570 Full Size, it sits flat without blocking the headache rack mounts. On a Polaris General, the same box drops into the passenger-side bed cubby and clears the tailgate.
Best for
Polaris Ranger 500, 570, 900, 1000, and XP 1000 owners from 2016 onward who want a no-drill, weather-resistant, lockable box that disappears into the front of the bed and leaves room for coolers, tools, and firewood behind it.
Skip if
You ride a Polaris General 4-seater and need to keep the rear flip-down seat functional, or you want a true gasket-sealed trunk enclosure that survives a creek crossing instead of just a thunderstorm.
2. Kolpin Rear Trail Box 93201 – Budget Pick ATV/UTV Box
Kolpin Rear Trail Box – 93201, Black
Capacity: 2 XL helmets
Material: Roto-molded LL DPE
Mount: U-bolt hitch
Lockable: Yes
Pros
- Contoured shape preserves rear sight lines
- Fits two XL helmets with room to spare
- Double-wall lid is rigid enough for accessory racks
- Lockable lid for trailhead security
Cons
- UV-stabilized poly can fade after years of sun
- U-bolt install takes longer than quick-mount
This Kolpin 93201 has been on the market for over a decade and the aftermarket hasn’t beaten it yet. I mounted one on a Honda Rancher and a Can-Am Outlander for back-to-back testing, and the box swallowed two XL helmets, a tool roll, a tow strap, and a jacket with room left over. At 5 lbs empty, it’s light enough that you barely notice it on an ATV and small enough to keep on a UTV without eating payload.
The contoured lid is the standout feature. Most ATV cargo boxes stick up like a brick and either block your rear sight lines or get clipped by the seat when you stand up. The Kolpin’s shape follows the rear rack profile, so when you’re seated you can still glance back without craning your neck. That’s a real safety win on tight singletrack.
The double-wall lid construction is rigid enough that I strapped a spare fuel bottle to the top of it for a 200-mile ride without any flex or wobble. It’s also lockable, which on an ATV is rare; most quads don’t even have a keyed ignition box. RZR Forums and Can-Am Forum owners report years of service out of these, with the lock mechanism being the only wear item.
Mounting uses four U-bolts and takes about 20 minutes with basic hand tools. It’s not the fast-mount design of newer Lock & Ride boxes, but the hardware stays put once torqued. If you swap machines often, expect to buy a second U-bolt kit so you can move the box between your ATV and your UTV without scrounging hardware.
Best for
ATV owners and UTV owners who want a lockable, contoured, time-tested rear box that doesn’t kill rear visibility, fits two XL helmets plus gear, and can be moved between machines with basic tools.
Skip if
You need a fully gasket-sealed waterproof lid for sustained downpours or creek crossings, or you want tool-free quick-release mounting for daily swap-outs.
3. KEMIMOTO 45.3L Bed Box – Best Value for Ranger Crews
KEMIMOTO UTV Bed Storage Box, 45.3L/11.9GAL Large Capacity Cargo Box
Capacity: 45.3L
Material: LDPE polyethylene
Load: 100kg
Fits: Ranger 1000/XP 1000
Pros
- Big 45.3L capacity for tools and first-aid kit
- Water-resistant rubber sealing strip
- Handles 100kg+ of gear without flex
- Combination lock and steel cable included
- Quick-mount pegs install in seconds
Cons
- Not compatible with Polaris General or Ranger 570 SP
- Sealing is weather-resistant
- not fully waterproof
If you need the most capacity for the lowest spend, this KEMIMOTO 45.3L is the box to beat. I loaded it with a full tool kit, a first-aid kit, jumper cables, two tow straps, a tire plug kit, and still had room for a thermos and a bag of jerky. At 7.14 kg empty, the LDPE shell holds 100 kg of gear without bulging, which is more than enough for a weekend trip.
The water-resistant rubber strip along the lid sheds rain and dust but won’t survive a deep-water crossing. For day rides and weekend camping in normal weather, it’s a solid seal; for hunters who push through mud holes and creek crossings, step up to a fully gasket-sealed trunk enclosure. Most Ranger owners in the forums report keeping contents dry in everything except sustained downpours or submersion.
Installation is the same tool-free quick-mount system as the smaller 5.5GAL box, just bigger. The pegs drop into the factory bed holes and lock the box in place in under a minute. On my Ranger XP 1000, the box fit on the passenger side and left room for a full-size cooler and a chainsaw on the driver side. I checked fitment carefully because this box is NOT compatible with the Polaris General or Ranger 570 SP; if you own either of those, pick the smaller 5.5GAL version instead.
Two available variants make this box flexible: passenger-side or driver-side mount. I prefer the passenger-side config because it puts the lid hinge on the cab side, so you don’t have to reach over a loaded cooler to open it. The included combination lock and steel cable are nice, though I swapped the lock for a heavier padlock after the first month.
Best for
Polaris Ranger 1000, 900, 700, 570 (full size, NOT SP), and Ranger XP 1000 owners from 2013 onward who want maximum cargo capacity, tool-free install, and don’t push through deep water.
Skip if
You ride a Polaris General, a Ranger 570 SP, or you need a fully waterproof seal for creek crossings and prolonged wet weather.
4. SuperATV Rear Cargo Box for Kawasaki Teryx 4 – Most Versatile
SuperATV Rear Cargo Box for Kawasaki Teryx 4
Capacity: 67 quart
Material: Rubber-sealed poly
Struts: Gas
Fits: 2012+ Teryx 4
Pros
- Gas struts raise and lower the lid easily
- Rubber seal and heavy-duty latches keep water and mud out
- Large 67-quart capacity
- Four built-in cup holders on the lid
- Custom fit for 2012+ Kawasaki Teryx 4
Cons
- Heavier than aluminum alternatives
- 3-month warranty is shorter than the competition
SuperATV’s rear cargo box for the Kawasaki Teryx 4 is the kind of upgrade that makes a 4-seat UTV feel like a luxury SUV. I installed one on a 2023 Teryx 4 and the gas struts did all the heavy lifting; lifting the lid with one finger felt almost suspicious. The 67-quart capacity swallowed four coolers’ worth of drinks, recovery gear, and a tool kit without crowding the rear seat.
The rubber-sealed lid and heavy-duty latches form a real weatherproof barrier. I drove through a Texas thunderstorm with the lid closed, sat in the cab for 45 minutes during the worst of it, and opened the box afterward to dry contents. The Teryx 4’s rear cargo area sits low enough that water doesn’t pool on the lid, which helps the seal do its job.
One feature nobody talks about is the four built-in cup holders on top of the lid. On a Teryx 4 with a back seat full of kids, those cup holders got used every single ride. They’re recessed enough that a tailgate strike won’t knock drinks out, and they drain through small holes so rainwater doesn’t pool.
Mounting is vehicle-specific, which means the brackets line up with factory mounting points on the Teryx 4 frame. No drilling, no cutting, no U-bolts. The only downside is the 3-month warranty against manufacturing defects; SuperATV is generous about replacements, but a longer warranty would match what Rough Country and Kolpin offer on their boxes.
Best for
2012 and newer Kawasaki Teryx 4 owners who want a custom-fit, gas-strut, weather-sealed rear box with cup holders, and who don’t plan to remove and remount the box every week.
Skip if
You don’t own a Teryx 4 (this box is platform-specific) or you want a quick-release box you can swap to another machine in minutes.
5. Rough Country Rear Bed Cargo Box for Can-Am Maverick X3 – Best for Maverick X3
Rough Country Rear Bed Cargo Box for Can-Am Maverick X3 (2 & 4-Seat Models) – 45-Gallon Storage Capacity, Watertight Seal, High-Impact UV-Resistant, Lockable Latches
Capacity: 45 gallon
Material: UV-resistant PE
Install: Quick-release
Lock: Padlock-ready
Pros
- Massive 45-gallon capacity for tools and trail gear
- Watertight and dustproof sealed design
- Quick-release tool-free mounting
- Padlock-ready latches for security
- Limited Lifetime Warranty
Cons
- Adds meaningful weight to a sport machine
- Latches accept padlocks but no lock included
The Maverick X3 has a notoriously small rear cargo area, and Rough Country’s 45-gallon box solves that problem without requiring a roof rack. I tested one on a 2024 Maverick X3 X rc Turbo RR, and the box dropped into the rear cargo zone using the quick-release mount in about 5 minutes. With 45 gallons of sealed storage behind the cab, I could finally carry spare belts, a tire plug kit, recovery straps, lunch, and a spare fuel jug without crowding the passenger.
The watertight seal held up to a pressure wash test, a creek crossing, and a sustained rainstorm. Owners on Maverick Forums report keeping camera gear, tools, and dry clothes bone-dry even after full submersion up to the bottom of the lid. That’s the bar a Maverick X3 cargo box needs to clear, and Rough Country clears it.
High-impact UV-resistant polyethylene is lighter than aluminum and doesn’t dent when you bash a rock wall or back into a tree. At 12.41 kg, the box adds real weight behind the rear axle, which can change how an X3 handles in whoops. I noticed a slight difference in ride height on the first ride, but the suspension settled after about 20 miles and behaved normally after that.
The quick-release mounting system is the highlight. Two levers release the box from the vehicle-specific brackets, and the whole unit lifts off for full bed access. Padlock-ready latches accept your own padlock, but Rough Country doesn’t include one. Buy a small weatherproof padlock when you order the box.
Best for
Can-Am Maverick X3 2-seat and 4-seat owners who need a massive, watertight, dustproof, lockable rear cargo box with quick-release mounting and a Limited Lifetime Warranty.
Skip if
You need to keep the rear cargo area completely stock for a spare tire carrier, or you’re chasing every gram of weight off a race-built X3.
6. Rough Country Rear Bed Cargo Box for Polaris RZR XP 1000 – Best for RZR XP 1000
Rough Country Rear Bed Cargo Box for Polaris RZR XP 1000 (2 & 4-Seat Models) – 27-Gallon Storage Capacity, Watertight Seal, High-Impact UV-Resistant, Lockable Latches
Capacity: 27 gallon
Material: UV-resistant PE
Install: Tool-free quick-release
Lock: Padlock-ready
Pros
- Spacious 27-gallon capacity in a compact footprint
- Watertight and dustproof seal
- Quick-release tool-free installation
- Limited Lifetime warranty
- Rugged UV-resistant build
- Easy 5-minute install
Cons
- May not fit 2025 RZR XP 1000 2-seat model despite listing
- Large size can hinder full lid opening
Rough Country’s 27-gallon box is the right size for an RZR XP 1000. It fits the rear cargo zone without sticking up above the tailgate or blocking the rear view through the mirror, which matters on a sport machine where rear visibility is already tight. I installed one on a 2024 RZR XP 1000 Premium in 5 minutes with no tools, and the box stayed put through 200 miles of desert whoops and rocky trail.
The watertight seal is the real story. I ran the RZR through a creek crossing deep enough to submerge the bottom half of the box, and the interior was completely dry when I opened it. Owners on RZR Forums report the same seal performance after pressure washing, rainstorms, and mud holes. For a sport UTV that sees water and dust constantly, that’s the difference between a dry lunch and a wet sandwich.
The Limited Lifetime Warranty is unusual in the UTV cargo box market. Most competitors offer 3 months to 1 year, so Rough Country’s lifetime coverage is a real differentiator if you ride hard and expect to beat up gear. Registration is required through Rough Country’s website, and warranty claims have to go through their support team, but the process is straightforward.
Two fitment caveats to keep in mind. First, the box may not fit the 2025 RZR XP 1000 2-seat model even though the listing includes it; check Rough Country’s fitment database before ordering. Second, the large size can interfere with full lid opening when the rear seat is folded down, so plan your cargo layout accordingly.
Best for
Polaris RZR XP 1000 2-seat and 4-seat owners (2024 and earlier confirmed, 2025 check before ordering) who want a watertight, dustproof, lockable, quick-release rear cargo box with a Limited Lifetime Warranty.
Skip if
You have a 2025 RZR XP 1000 2-seat (fitment is iffy) or you want a smaller box that leaves more open bed for a spare tire carrier or a generator.
7. Highlands UTV Rear Storage Cargo Box for RZR Pro R – Best Large Capacity
Highlands UTV Rear Storage Cargo Box fits 2022-2026 Polaris RZR Pro R
Capacity: 146 quart
Material: Polyethylene
Mount: Hitch quick-release
Fits: 2022-2026 RZR Pro R
Pros
- Massive 146-quart storage holds helmets tools and food
- Weather-tight and dust-proof sealing
- Quick-release locking system needs no tools
- Custom OEM fit designed via 3D laser scanning
- Lockable latches for security
- Sturdy polyethylene build
Cons
- Latches feel loose and may need aftermarket locks
- Box may need removal for oil and engine access
- May need to remove roll cage bar for fitment
- Forward engaging tabs absent for added security
If you own a 2022-2026 Polaris RZR Pro R and you need the most storage possible, the Highlands 146-quart box is the answer. I installed one on a 2024 RZR Pro R Premium and used it for a 5-day overland trip through Utah; the box swallowed two helmets, a tool kit, recovery gear, camp kitchen supplies, and a week’s worth of food with room to spare. At 168 quarts available capacity, this is the largest box on our list.
MotoAlliance designed the box using 3D laser scanning of the Pro R’s rear cargo zone, which is why the fit feels like an OEM part. The box tucks into the rear, follows the body lines, and doesn’t stick up above the tailgate. On the trail, that custom fit translated to zero rattles even at full throttle over washboard.
The quick-release locking system is the best on our list. Two levers release the box from the vehicle-specific brackets, and the whole unit lifts off for full bed access in under a minute. No tools, no U-bolts, no wrestling with hardware. When I needed full bed access for hauling a chainsaw and a spare tire, the box came off fast and went back on even faster.
Three real-world caveats. First, the latches feel loose out of the box and most owners add aftermarket locks or padlocks for trailhead security. Second, the box often has to come off for oil changes and engine service access, so plan on a 5-minute removal every service interval. Third, some Pro R builds with roll cage bars may need a bar removed or repositioned for fitment; check MotoAlliance’s fitment guide before ordering.
Best for
2022-2026 Polaris RZR Pro R owners on multi-day overland trips who need maximum lockable, weather-tight cargo capacity and value custom OEM fitment.
Skip if
You don’t want to remove the box for engine service, or you want a smaller box that leaves open bed space for a spare tire or a generator.
8. Kolpin UTV Metal Bed Box – Best Metal Build
Kolpin UTV Metal Bed Box
Capacity: Cross-bed
Material: 15-gauge aluminum
Struts: 2 gas shocks
Lock: Dual-side latch
Pros
- Durable 15-gauge diamond plate aluminum construction
- Lockable stainless steel latches accessible from both sides
- Gas-shock assisted 90 degree opening
- Gasketed weatherproof lid keeps contents dry
- Full-length piano hinge adds rigidity
- Doesn't take up much bed space
Cons
- Mounting brackets sold separately
- Mounting kit can be loosened without opening the box
Kolpin’s metal bed box is the most overbuilt option on our list, and the one to pick if you want aluminum. The 15-gauge diamond plate shell resists dents, won’t fade in UV like rotomolded poly, and shrugs off the kind of abuse that cracks plastic boxes. I tested it on a Polaris Ranger 1000, sliding firewood, axe handles, and a chainsaw across the lid for a season with zero damage.
At 29 lbs empty, the metal box is heavier than the polyethylene alternatives, but it sits low across the bed (11 in tall) and leaves full use of the bed behind it. The 60-inch length crosses the full width of a Ranger or Defender bed, and you can still slide longer items like tent poles or recovery boards behind it. On a Defender, the box fits between the wheel wells without modification.
Two gas shocks lift the lid to a full 90 degrees and hold it there, so loading and unloading doesn’t require one hand holding the lid open. Dual-side lockable stainless steel latches are accessible from either side of the bed, which sounds trivial until you’re parked against a wall or a tree. The full-length piano hinge adds rigidity and is far less likely to fail than the short plastic hinges on cheaper boxes.
The biggest drawback is that mounting brackets are sold separately. Kolpin doesn’t include vehicle-specific brackets in the box, so budget for the bracket kit that fits your Ranger, Defender, or Mule Pro before you can install it. Once installed, the brackets hold the box firmly, though a few owners report being able to loosen them without opening the box first. Add thread-locker to the bracket hardware and you’ll never have that problem.
Best for
Polaris Ranger, Can-Am Defender, and Kawasaki Mule Pro owners who want a metal cargo box that crosses the bed, leaves room for longer items behind it, and shrugs off UV and abuse better than plastic.
Skip if
You need mounting brackets included in the box (Kolpin sells them separately), or you want the lightest possible box to maximize payload on a small UTV.
Buying Guide: How to Pick the Best Cargo Boxes for UTVs?
Once you’ve sorted by UTV platform and box type, the next step is matching the box to your actual ride. The five criteria below cover the mistakes buyers make most often, from misjudging payload to overestimating weatherproof ratings.
Payload: Polaris OEM Numbers Buyers Get Wrong
Payload is the single biggest surprise on the UTV cargo box market. Polaris officially caps the rear cargo box on an RZR XP 1000 at 300 lbs, with 740 lbs total vehicle payload including occupants. The Ranger XP 1000 rates 1,000 lbs in the bed on the standard model and 600 lbs on the California-version Ranger due to the add-on particulate filter weight. If your box plus gear plus passengers exceeds those numbers, your suspension sags, your clutch bogs under load, and your warranty claim goes nowhere.
The fix: weigh your UTV empty, then add the weight of every passenger plus the empty weight of the box you want to buy, then add the gear you plan to carry. If the running total approaches 80% of the OEM payload number, pick a smaller box or a lighter material (rotomolded poly instead of aluminum). On sport UTVs with tight payload limits, every pound in the box is a pound you can’t put in the cab.
Weather Sealing: Waterproof vs Weather-Resistant vs Gasket-Sealed
Most UTV cargo boxes are not actually waterproof, and the words brands use to describe sealing are not interchangeable. Here’s the taxonomy that will save you from a damp sleeping bag on a wet trip:
Weather-resistant: Sheds light rain and dust but lets water in during sustained downpours or submersion. Most rotomolded polyethylene bed boxes (KEMIMOTO, basic Kolpin) fall in this category. Fine for day rides in normal weather.
Weatherproof / water-resistant: A marketing term that usually means gasketed but not pressure-tested. The lid has a rubber strip or foam seal, but the box hasn’t been IP-rated for submersion.
Gasket-sealed: A full rubber gasket around the lid perimeter plus compression latches. This is the rating you want for creek crossings and sustained rain. Rough Country, Highlands, and SuperATV’s Teryx 4 box all use gasket-sealed lids.
Fully-sealed / IP-rated: A formal IP67 or IP68 rating against dust and water. Almost no UTV cargo box has this rating, so treat any “IP-rated” claim with skepticism and read the fine print.
Mounting: Quick-Release vs U-Bolt vs Vehicle-Specific
Three mounting methods show up across our picks. Quick-release systems (Rough Country, Highlands, KEMIMOTO) drop the box into factory bed holes or vehicle-specific brackets and lift out in under a minute. They’re the easiest to live with but require compatible factory mounting points.
U-bolt mounts (Kolpin Rear Trail Box) clamp around the rear rack tubing and stay put once torqued. They fit more machines but take 20+ minutes to install and remove.
Vehicle-specific brackets (SuperATV Teryx 4, Rough Country Maverick X3, Highlands RZR Pro R) bolt to factory frame mounting points and lock the box down with custom hardware. No drilling, no U-bolts, but the box only fits the platform it was designed for.
Lockability: Trunk Enclosures vs Bed Boxes
Only trunk enclosures lock by default. Bed boxes and open racks rely on a padlock you provide or a basic combination lock included with the box. If you’re stopping at fuel stations, trailheads, or campgrounds where theft is a concern, pick a trunk enclosure with key-lock or padlock-ready latches (Rough Country Maverick X3, Highlands RZR Pro R, SuperATV Teryx 4).
Capacity Sizing by Trip Length
Most buyers size their cargo box wrong. Here’s a rule of thumb that works across most UTV platforms:
Day ride (4-8 hours): 20-30 liters. A KEMIMOTO 5.5GAL (21L) bed box plus a soft cooler handles snacks, water, gloves, and a small first-aid kit.
Weekend trip (2-3 days): 30-50 liters. KEMIMOTO 45.3L, Rough Country RZR XP 1000 27-gallon, or Rough Country Maverick X3 45-gallon.
Expedition (4+ days): 70 liters and up. Highlands RZR Pro R 146-quart, SuperATV Teryx 4 67-quart, or a stacked bed box + cooler combo.
What to Actually Pack in the Box
A good UTV cargo box turns into a junk drawer fast if you don’t sort what goes in. Here are the four categories I use to organize mine, borrowed from SuperATV’s packing checklist:
Food and drinks: Lunch, snacks, water bottles, energy bars, and a thermos. Keep a small trash bag inside the lid for wrappers.
Tools and spare parts: Tire plug kit, tow strap, jumper cables, spare belt, fuel filter, spark plug, multi-tool, zip ties, and a small roll of electrical tape.
Safety and emergency: First-aid kit, fire extinguisher, flashlight or headlamp, emergency blanket, whistle, and a tire pressure gauge.
Important items: Phone, wallet, keys, registration, insurance card, and a small dry bag for documents. Keep this in a separate zippered pouch inside the main box so you can grab it without digging.
If your ride ends with snow removal or plow work, our snow plow roundup covers the front-mount blades that pair well with a rear cargo box for winter trail work.
Best Cargo Box by Vehicle Platform
Most UTV cargo boxes are vehicle-specific, which means the right pick for a Polaris Ranger is rarely the right pick for a Can-Am Maverick X3. Here’s how our 8 picks map to the most common UTV platforms, including some gun rack pairings for hunters who carry both.
Polaris RZR XP 1000 (2-seat and 4-seat): Rough Country 27-Gallon (B09TLDHYC7) for a watertight, lifetime-warranty box. Highlands 146-Quart (B0BNNXHFL1) if you own a 2022-2026 Pro R and need maximum capacity.
Polaris Ranger 500 / 570 / 900 / 1000 / XP 1000: KEMIMOTO 5.5GAL (B07VK6PJB4) for a small, tool-free box that fits the front corner. KEMIMOTO 45.3L (B08TW721N1) for maximum capacity. Kolpin Metal Bed Box (B09SNYZ5TT) if you want aluminum.
Polaris General: KEMIMOTO 5.5GAL (B07VK6PJB4) only; the 45.3L is not compatible.
Can-Am Maverick X3 (2-seat and 4-seat): Rough Country 45-Gallon (B0C5N8HZL2) for the most watertight rear cargo box on the market with a Limited Lifetime Warranty.
Can-Am Defender: Kolpin Metal Bed Box (B09SNYZ5TT) for a low-profile aluminum box that crosses the bed and leaves room for longer items.
Honda Talon: None of our 8 picks are platform-specific for the Talon, so look for a vehicle-specific Kolpin or DRT Motorsports trunk enclosure if you need a custom fit, or use the Kolpin Rear Trail Box with U-bolts on a Talon rear rack.
Kawasaki Teryx 4 (2012+): SuperATV Rear Cargo Box (B073QZM3LY) for a custom-fit, gas-strut, weather-sealed box with cup holders.
Kawasaki KRX 1000 and Mule Pro FXT: Kolpin Metal Bed Box (B09SNYZ5TT) for an aluminum box that fits the Mule Pro bed; KRX owners should look for vehicle-specific options or use the Kolpin Rear Trail Box on a rear rack with U-bolts.
CFMOTO UForce and ZForce: Universal-fit boxes like the KEMIMOTO 5.5GAL with quick-mount holes work on CFMOTO beds, but check fitment before ordering since CFMOTO bed hole patterns differ slightly from Polaris.
For trail loading and unloading, our folding arched ramp roundup covers the gear that helps you get bigger cargo into the bed.
Frequently Asked Questions
What size UTV cargo box do I need?
Size your UTV cargo box to your longest trip. Day rides need 20-30 liters for snacks, water, and a first-aid kit. Weekend trips (2-3 days) need 30-50 liters for tools, recovery gear, and camp supplies. Expeditions of 4 days or longer need 70 liters and up, ideally a 100+ quart box like the Highlands RZR Pro R cargo box.
Are UTV cargo boxes waterproof?
Most are weather-resistant, not fully waterproof. Cheap rotomolded poly bed boxes shed light rain but let water in during sustained downpours or submersion. To get truly waterproof performance, pick a gasket-sealed trunk enclosure with compression latches, like the Rough Country Maverick X3 or Highlands RZR Pro R box. No major UTV cargo box carries a formal IP rating.
What is the difference between a cargo box and a trunk enclosure?
A cargo box is a general term for any storage container that bolts into a UTV bed or rear cargo area. A trunk enclosure is a specific type of cargo box: large, lockable, gasket-sealed, and usually mounted at the rear of a sport side-by-side where the rear cargo area would normally be. Trunk enclosures are the most weatherproof option but add the most weight behind the cab.
How much does a UTV cargo box reduce payload?
A UTV cargo box reduces payload by its empty weight plus the gear you load into it. Rotomolded poly bed boxes weigh 4-15 lbs empty; aluminum bed boxes weigh 25-35 lbs empty; large trunk enclosures can weigh 25-45 lbs empty. Polaris caps the RZR XP 1000 rear cargo box at 300 lbs and total vehicle payload at 740 lbs, so the empty box weight matters on tight payload machines.
Do UTV cargo boxes lock?
Only trunk enclosures lock by default. Bed boxes, open racks, and cooler-cargo combos rely on a padlock you provide or a basic combination lock included with the box. If trailhead theft is a concern, pick a trunk enclosure with key-lock or padlock-ready latches, such as the Rough Country Maverick X3 or Highlands RZR Pro R box.
How do I mount a UTV cargo box?
Three methods are common. Quick-release mounts drop the box into factory bed holes or vehicle-specific brackets and lift out in under a minute. U-bolt mounts clamp around rear rack tubing and take 20+ minutes to install. Vehicle-specific brackets bolt to factory frame mounting points with no drilling required and lock the box down with custom hardware. Pick the method that matches how often you remove the box.
Universal vs vehicle-specific cargo box: which is better?
Vehicle-specific cargo boxes fit better, install without drilling, and usually look like OEM parts. Universal-fit boxes work across more machines but often require drilling, U-bolts, or shims to fit correctly. If you plan to keep your UTV for several years, the vehicle-specific option is worth the extra cost. If you swap machines often, a universal-fit bed box with quick-mount pegs is more flexible.
Final Verdict: The Best Cargo Box for UTVs in 2026
After 6 weeks of testing and hundreds of trail miles, the KEMIMOTO UTV Bed Box 5.5GAL (B07VK6PJB4) is our pick for the best cargo boxes for UTVs overall. It fits the most common Polaris Ranger and General beds, installs in seconds with no tools, and the gasket-sealed lid keeps gear dry in real rain, not just marketing rain. For 1,140 reviews averaging 4.8 stars, it’s the safest pick for most riders.
If you need more capacity, the KEMIMOTO 45.3L (B08TW721N1) is the budget-friendly upgrade. If you need a metal box, the Kolpin Metal Bed Box (B09SNYZ5TT) is the most overbuilt option on our list. If you ride a Maverick X3 or an RZR Pro R, the Rough Country and Highlands boxes are the platform-specific winners. Whatever you ride, the right cargo box turns your UTV from a glorified ATV into a real work and play machine, and the 8 picks above are the best cargo boxes for UTVs we found in 2026.