A UTV cargo box is the single accessory that changes how a side-by-side works on a hunting trip. Everything else – light bars, winches, racks – adds capability, but a sealed box decides whether your optics, ammunition and electronics survive a wet week in the backcountry or end up in a puddle. It also decides whether you can still fit a downed deer in the bed when you get back to the truck.
That is why hunting boxes are not interchangeable with the generic cargo boxes sold for trail riding, and why the best UTV cargo boxes for hunting come down to fitment, sealing, lockability and payload math rather than capacity alone. We spent weeks comparing ten widely-reviewed bed boxes, checking the fitment lists line by line and working out what each one actually swallows on a real hunting load.
Before we get into the list, one thing needs to be said plainly: every box in this roundup is vehicle-specific to some degree. If your machine is not on the compatibility chart, the box will not fit, and no amount of persuasion changes that. Start with your platform, not with the box you like. Our complete UTV accessory picks cover the rest of the build, and picking a rangefinder binocular pair to pair with it is a good second step.
Table of Contents
Top 3 Picks for UTV Cargo Boxes Built for Hunting (October 2026)
The three boxes below cover the most common hunting situations. If you own a Polaris Ranger or General and want one box that installs in seconds and keeps rain out, take the KEMIMOTO in slot one. Polaris owners who want more usable volume per box should look at slot two, and Defender or Commander owners should start with slot three.
KEMIMOTO 5.5 Gal Bed Box
- 21L capacity
- Tool-free Lock and Ride pegs
- Waterproof gasket seal
- Combination lock included
StarknightMT 6.34 Gal Ranger Box
- 24L and 6.34 gallons
- Sealed rubber strip
- Anti-theft combination lock
- Spring rope included
A and UTV PRO 20L Defender Box
- IP67 sealed rubber strip
- No-drill factory hole install
- 20L capacity
- High-density polyethylene
How We Picked These Boxes
Every box here was scored against the same five criteria, in this order:
Fitment accuracy. Does the published compatibility list actually name your make, model and model year, and does the review history show returns caused by wrong-fit orders?
Weather sealing. Is there a rubber gasket or sealed strip on the lid, and do owners report water intrusion after rain or mud season?
Lock and latch quality. Over-center latches, gas struts, key locks or padlock-ready hasps – and how the latches behave at freezing dawn temperatures.
Payload behaviour. Rated load figures, whether the lid doubles as a seat, and how much bed floor the box eats.
Noise and draft. Rattle over washboard ground matters when you are sliding into a treeline at 4 a.m.
Price tier was used to separate the budget and premium options, not to rank them. We excluded nothing for being cheap, and we gave the premium-end boxes in the group a fair hearing on volume and sealing quality. Rating and review count were copied exactly as listed, with no rounding, so you can see how thin the evidence is on some of these products.
All 10 UTV Cargo Boxes at a Glance
Here is the short version. Ten boxes, ten vehicles or fitment groups, and the feature that decides each one for a hunter. Details and owner feedback follow underneath.
| Product | Specifications | Action |
|---|---|---|
| KEMIMOTO 5.5 Gal Bed Box |
|
Check Latest Price |
| A and UTV PRO 20L Defender Box |
|
Check Latest Price |
 Kolpin Rear Trail Box 93201 |
|
Check Latest Price |
| StarknightMT 6.34 Gal Ranger Box |
|
Check Latest Price |
 KEMIMOTO 11.9 Gal Large Box |
|
Check Latest Price |
 Kimpex Expedition Sport Rear |
|
Check Latest Price |
 Rough Country Maverick X3 Box |
|
Check Latest Price |
 SuperATV RZR Cooler Cargo Box |
|
Check Latest Price |
 SuperATV Teryx 4 Rear Box |
|
Check Latest Price |
 KEMIMOTO Anti-Theft Bed Box |
|
Check Latest Price |
What Hunters Actually Carry
Capacity means nothing until you translate it into gear. Here is the load a typical solo or two-person big-game and deer camp produces, and how it divides between a cargo box and the bed floor:
A 45 to 65 litre hard cooler, which usually goes in the bed, not in the box, unless the box is a dedicated insulated unit like slot eight.
Tree stand sections or a portable ground blind, which is long, awkward and needs the bed floor more than the box.
One or two decoy bags of full-body or silhouette decoys, bulky and light – bed space again.
Optics cases, a rangefinder, a bow case or rifle case, spare ammunition and a cleaning kit. This is the load that genuinely belongs in a box, because it is fragile, expensive and easy to lose.
First-aid kit, headlamp batteries, a dry bag of rain gear, extra socks, a stove and a pot. Dry items only – a wet load in a sealed box stays wet.
Recovery gear: straps, a winch line, a shovel, traction boards. Heavy, and usually better bungeed down in the bed.
So a realistic split is: fragile, valuable, dry gear in the box, and bulky, heavy, wet-tolerant gear in the bed. That is why bed-space preservation matters as much as capacity, and why an overhead rack is a legitimate alternative on a machine that carries a second passenger or a game rack.
1. KEMIMOTO 5.5 Gal Bed Box – Best Overall for Polaris Rangers
KEMIMOTO UTV Bed Storage Box 5.5GAL Compatible with Polaris Ranger General
21L and 5.5 gallons
Polaris Lock and Ride pegs
Waterproof gasket seal
75 kg lid rating
Pros
- Tool-free Lock and Ride pegs mount to either bed rail
- Nothing protrudes into the cargo bed to snag
- Gasket-sealed lid keeps dust and moisture out
- Combination lock and steel cable included
- Broad fitment across Ranger and General
Cons
- Only 5.5 gallons so it holds small items
- Four-digit combination lock is not especially robust
This is the box we ended up recommending to the most people, and it is not because of any single feature. It is because the combination of a 4.8 average across more than a thousand reviews, a fit that owners describe as precise, and a lid hinge that keeps every part of the box inside its own footprint is genuinely hard to beat. On a Ranger or General, the three quick-mount pegs drop into the factory Lock and Ride holes and the box is in place without a single tool.
For hunting use, treat the 21 litres as a dedicated optics and ammunition locker rather than a general cargo hold. An optics case, a set of spare batteries, a bow case or a rifle case, a first-aid kit and a dry bag of rain layers fits comfortably. What it will not take is a cooler, a full decoy bag, or a stand section.
The 5.5 gallon figure is quoted in both litres and gallons on the listing, which matters because retailers mix the two systems. Inside, the lid is textured LDPE rated to 75 kg, so it is genuinely usable as a step or a perch on rough ground, and the box is only 3.88 kg empty, which means you can lift it in or out one-handed at a trailhead.
Two limitations are worth planning around. The included four-digit combination lock and hasp is described by a share of owners as weak, so if your optics are worth protecting, run a small padlock through the hasp or keep the valuables in a separate lock case inside the box. And the 5.5 gallon volume is genuinely small – measure your cooler and your decoy bag before you commit to this as your only storage.
What it holds on a hunting load
One optics case, one bow or rifle case, a first-aid kit, a small dry bag of layers, and enough space remaining for a spare battery charger. Owners running tree stands typically load the stand sections in the bed and keep the box for gear that must stay dry and secure.
The compatibility list is broad, covering Ranger and General variants across a wide span of model years, which makes this the safest pick if you are not certain of your exact model year.
When it is the wrong box
Skip it if you are hauling a full cooler inside a box, if your machine is a Can-Am, Kawasaki, CFMOTO or Honda, or if you need one compartment to hold both ammunition and wet boots. The gasket seal is the reason the box is listed as waterproof, but keeping wet mud out of the same cavity as your ammunition is your problem, not the manufacturer’s.
It is also not a security box. The lock is theft deterrence, not theft prevention, and anyone with a pry bar and thirty seconds will get the hasp open.
2. A and UTV PRO 20L Box – Best for Can-Am Defender Owners
A & UTV PRO Bed Storage Box for Can Am Defender, HD10 HD9 HD8 HD5 Max/Can Am Commander, Compatible with Can-Am Defender 2016-2026 Accessories Removable Tool Box Rear Cargo Box
20 litres for Defender
Can-Am Defender and Commander
IP67 sealed
No-drill factory install
Pros
- Snaps into existing bed holes with no drilling
- IP67 sealing keeps gear dry in rain and dust
- High-density polyethylene resists impact and heat
- Sized for winch kit and folding saws
Cons
- Vehicle-specific so check the compatibility list
- This listing is the Defender and Commander version only
Defender and Commander owners have fewer good options than Polaris drivers, and this is one of the better-reviewed ones we found. It installs into existing factory bed holes with no drilling and no hardware, which matters if you lease the machine, sell it, or move the box between two Can-Am side-by-sides.
The spec sheet states IP67 sealing with a sealed rubber strip, one of the stronger weather claims on this list. Owners report that the box stays dry through rain and dust, and a minority of one-star reviews trace almost entirely back to fitment confusion rather than quality.
Twenty litres is a working volume for a winch kit, a folding saw, gloves, a spare jacket and a compact optics case. It is not a place to put a cooler or a stand section, so plan this as a dedicated gear locker on a machine whose bed is already carrying a game rack or a second passenger’s kit.
One operational detail: the brand builds separate boxes for RZR, Mule, Pioneer, Sportsman and Ranger platforms. If you switch between machines, the Defender and Commander box will not transfer, so confirm your model before ordering.
What it holds on a hunting load
A compact optics case, a spare ammunition box, a folding saw, a tow strap and a rain shell. The high-density polyethylene body shrugs off the impact and heat of a sun-baked bed, which matters more than it sounds in August.
Because it is a no-drill install, you can pull it out at camp and lock it in your vehicle overnight, which is a simple way to solve the theft question that open-bed gear always raises.
When it is the wrong box
It is wrong for a Maverick X3, a Defender that is not on the compatibility chart, or any non-Can-Am machine. It is also too small for a bulk gear load, and at 3.2 kg empty it is light enough that a full box is easy to lift in and out.
3. Kolpin Rear Trail Box 93201 – Most Versatile for Helmet and Gear Capacity
Kolpin Rear Trail Box – 93201, Black
Fits two XL helmets
Low profile contour
Water resistant
Double-wall lid
Pros
- Contoured shape keeps rearward visibility clear
- Holds two XL helmets plus extra gear
- Roto-moulded UV-stabilised LLDPE
- Double-wall lid adds rigidity
Cons
- Water resistant rather than fully waterproof
- Listing dimensions differ between spec and feature copy
- Mounting hardware must match your UTV
The Kolpin Rear Trail Box has been in the catalog for years, and long-term owners repeatedly single out its durability. The roto-moulded UV-stabilised LLDPE shell and the double-wall lid are why, and both matter in a bed that bakes in summer sun and freezes on a winter dawn.
Its defining shape is the contoured, low-profile rear design. Owners consistently highlight that it does not block the rearward sight line, which is a real safety consideration when you are hauling game on a trail at dusk.
The stated capacity is two XL helmets plus extra room, and the box measures 37 inches long by 17.5 inches wide by 13.5 inches high. In hunting terms, the helmet volume converts neatly: two helmets, or one helmet plus a set of decoy bags, or a set of tree stand sections laid flat.
Be careful with the dimensions before you order. The feature copy on some listings gives slightly different figures from the spec table, so measure your available bed width rather than trusting either number alone.
What it holds on a hunting load
Two XL helmets, or one helmet plus a spotter’s kit, or a stacked set of ground blind panels. The double-wall lid is rigid enough to take a soft bag on top, which effectively adds a shelf.
Long-term owners also use it for off-season machine storage, keeping battery chargers, tie-downs and a cover in one place between hunts. That year-round utility is a fair justification for a single purchase.
When it is the wrong box
It is listed as water resistant, not waterproof, and owners say the protection is good rather than total. If your priority is gear that must stay bone dry in sustained rain, this is the wrong box.
Mounting hardware is vehicle-specific and is not included across every kit configuration, so match the kit to your UTV before you order. At 5 pounds empty it is a manageable lift.
4. StarknightMT 6.34 Gal Ranger Box – Budget Pick with Genuine Capacity
StarknightMT UTV Bed Storage Box 6.34 GAL Compatible with Polaris Ranger
24L and 6.34 gallons
Three Lock and Ride pegs
Sealed rubber strip
Anti-theft lock
Pros
- 24 litres is a step up from the 21 litre class
- Sealed rubber strip keeps rain and dust out
- Anti-theft combination lock and spring rope included
- Tool-free install into factory holes
Cons
- Polaris only with no cross-platform fit
- Included combination lock is only moderately secure
This is the box that surprised us. It sits at the entry end of this roundup yet delivers more usable volume than the KEMIMOTO in slot one, and at 24 litres it holds a 6.34 gallon load that most owners rate as a step above the small-tool class of box.
It fits the Polaris Ranger and General platforms named on the listing, along with the Massimo T-Boss 550. The three quick-mount pegs go straight into the Lock and Ride holes, and the box can be moved from one side of the bed to the other in seconds.
Two details stand out for hunting use. First, the mounting system means the box is genuinely portable, so you can move it out of the bed to make room for a game rack or a long load and be back in place before the next mile. Second, the anti-theft combination lock and spring rope come in the box, so you are not hunting for compatible hardware at the dealer.
The sealed rubber strip is doing the work on wet days, and owners report contents staying dry in rain and dust. The same seal that keeps water out also keeps dust off optics cases and ammunition boxes stored for weeks between trips.
What it holds on a hunting load
A small personal cooler, a decoy bag, or a full-size optics case with a bow case and a change of clothes. At 24 litres it sits in the useful middle of the class rather than at either extreme.
For a hunter who wants more than the 5.5 gallon class offers but not a bed-consuming box, this is the sweet spot in the roundup.
When it is the wrong box
It is strictly Polaris. There is no Can-Am, Kawasaki, CFMOTO, Yamaha or Honda version, so confirm the model year on the compatibility list before you order.
The included combination lock and spring rope are the weak point – owners recommend a padlock for high-value optics. It also weighs 4.22 kg empty, which is fine for lifting but noticeable on a long pack-out.
5. KEMIMOTO 11.9 Gal Large Box – Best for Heavy Gear Loads
KEMIMOTO UTV Bed Storage Box, 45.3L/11.9GAL Large Capacity Cargo Box
45.3L and 11.9 gallons
100 kg plus load rating
Rubber strip seal
Water resistant
Pros
- Holds more than any other bed-rail box here
- Rated 100 kg plus so it works as a step
- Quick-mount pegs stay tight on rough ground
- Large 45.3 litre interior
Cons
- Will not fit the General or Ranger 570 SP
- Water resistant rather than fully waterproof
- At 7.14 kg it eats meaningful bed space
If you want one box that swallows a real hunting load rather than a curated one, this is the volume leader among the bed-rail boxes. At 45.3 litres it holds roughly two and a half times what the small Polaris boxes hold, and the 100 kg plus rating means the lid is built to take weight on top.
It is the box to reach for when the bed itself is already spoken for – carrying a second passenger’s kit, a game rack or a firewood load – and everything fragile still needs a home.
The 100 kg rating is the detail that changes how you pack. A box that heavy-rated can take a loaded cooler, a set of tree stand sections or a bag of decoys on top without a separate rack, and the quick-mount pegs keep it planted over washboard ground.
Fitment is the caveat that generates the most one-star reviews. This box does not fit the Polaris General or the Ranger 570 SP, and it is listed as water resistant rather than fully waterproof, so it is built for rain and dust, not for a ford.
What it holds on a hunting load
A full-size cooler, a stack of ground blind panels, a set of decoy bags, or a full camera kit with lenses. It is one of very few boxes in this roundup that will take a real cooler inside it.
It is also the natural choice for a machine that is used for work and hunting, because the same volume swallows recovery gear, fence-line tools and a wet-weather kit.
When it is the wrong box
Skip it on a General or a Ranger 570 SP, and think twice if bed space is tight. At 7.14 kg empty and 27 inches long, it takes a serious bite out of a standard bed, and a pair of them across a narrow bed is a lot of dead weight.
6. Kimpex Expedition Sport Rear – Best for Big Game Packouts
Kimpex Expedition Sport Box Rear
78 litre volume
Neoprene soft construction
Zipper closure
Rear mount
Pros
- Huge 78 litre volume for long trips
- Soft neoprene is gentler on optics and cases
- Takes a full-size helmet plus cargo
- Rear mount keeps cabin space clear
Cons
- No key lock so the zip is the only closure
- Water resistant rather than waterproof
- Vehicle-specific and needs compatibility checking
The Kimpex Expedition Sport Rear takes a completely different approach to the same problem. Instead of a hard plastic shell it uses a neoprene soft trunk, which is gentler on optics cases, bow cases and anything with a finish you care about. At 78 litres it is a genuinely large trunk, and among the biggest volumes in this roundup.
It mounts at the rear and takes one full-size helmet plus additional cargo. Owners who run multi-day camps value the volume more than they value security.
Two spec lines tell you exactly what this trunk is and is not: key lock is listed as no, and the closure type is a zipper. There are no heated grips either. That makes it a convenience and protection solution, not a secure storage solution.
Like every other box here, it is vehicle-specific. The listing does not spell out its platform coverage in the same detail the Polaris boxes do, so confirm fitment with the manufacturer before you order – the community complaints we saw about Kimpex are almost entirely about compatibility and purchase channels, not about the product failing.
What it holds on a hunting load
A full camp’s worth of soft gear: a helmet, a kit of decoy bags, several days of clothing, and a camera or optics kit. A soft-sided trunk is the friendliest option in this roundup for anything fragile.
It is also the natural pack-out trunk. When you are bringing a harvested animal home, this is where the messy, soft, non-fragile cargo goes without scratching anything else.
When it is the wrong box
It is the wrong box if you leave firearms, ammunition or expensive optics in the machine overnight. A zipper is a zipper, and water resistance is not waterproofing, so sustained rain gets into the seams eventually.
At 15.2 pounds empty it is also one of the heavier trunks here, and the 36 by 8 by 7 inch envelope is long and low rather than tall, so plan the loading angle.
7. Rough Country 45 Gallon Box – Best for the Can-Am 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
45 gallons on Maverick X3
Watertight and dustproof seal
UV-resistant shell
Lockable latches
Pros
- 45 gallons of sealed rear storage
- Watertight seal survives mud and washouts
- High-impact UV-resistant shell
- Lockable latches you can secure yourself
Cons
- Fits only the Maverick X3 2-seat and 4-seat
- At 12.41 kg it is awkward to lift alone
- U-bolt mounting needs bed rail hardware
This is one of the most tightly sealed boxes in the group. The listing states waterproof with a watertight, dustproof seal, and at 45 gallons of capacity in a 44 by 23.3 by 10.2 inch footprint it is the answer for a Maverick X3 that is used hard in mud season.
Owners highlight the fit quality and how solidly the box sits in the bed, which is what you want when the machine is being driven fast over rough ground with the load stacked behind you.
The construction is high-impact, UV-resistant polyethylene with a scratch-resistant finish, built for the abuse a trail machine takes. That finish matters more than it sounds on a box that will sit in full sun all summer before you use it again in the fall.
The latches are lockable rather than keyed, so you can add your own padlock and control the keys. For a hunter storing ammunition and optics, that is a better arrangement than a shared combination code.
What it holds on a hunting load
Several days of gear for two, a large cooler, a set of decoy bags, or a whole recovery kit. At 45 gallons it is the biggest storage volume of any hard box in the group, and it means you can stop rationing what you bring.
It is a genuinely good fit for a two-up hunting build, because the box replaces the loose gear pile that otherwise fills the footwell of a Maverick X3.
When it is the wrong box
It fits only the Maverick X3 in 2-seat and 4-seat form. If you own a Defender, a Ranger or a Viking, this box is irrelevant regardless of how good it is.
At 12.41 kg it is genuinely heavy, and the U-bolt mounting means hardware going into the bed rails – so removing it for every pack-out is a two-person job in the field.
8. SuperATV Insulated RZR Cooler Box – Best for Cold Storage
SuperATV RZR Cooler/Cargo Box for Polaris RZR Models | Insulated to Keep Drinks Cold | Holds 30 Liters | Built in Drain Plug | Sealed Lid
30 litre insulated chamber
Up to 3 inch foam
Holds 36 cans
Built-in drain plug
Pros
- Insulated chamber keeps drinks cold all day
- Takes 36 twelve ounce cans plus dry gear
- Drain plug makes cleanup fast
- Waterproof lid protects electronics
Cons
- At 30 pounds it is awkward to lift in and out
- Lowest average rating of the group at 4.3
- 30 litre capacity is small next to 45 gallon boxes
Every other box in this group stores gear. This one stores cold drinks and food as well, which is a different problem. The 30 litre chamber is insulated with up to 3 inches of polyurethane foam and holds up to 36 twelve ounce cans, with a lip-seal lid and heavy-duty rubber latches holding the seal.
It fits the Polaris RZR XP 1000 and XP 4 1000, XP Turbo S from 2018, and XP Turbo from 2016. High Lifter models are excluded, so check the fitment list if you run a modified RZR.
The built-in drain plug is the feature that will decide this for you. Meltwater and ice runoff drains into the ground instead of into the bed, which means a week of dawn-to-dusk camp use without hauling water to clean it out.
Owners also point out that the sealed lid doubles as dry protection for clothing and electronics when the machine gets submerged on a deep ford, which is common on the trails RZR drivers run.
What it holds on a hunting load
Drinks, food, ice and a dry layer or two. Outside dimensions are 28-3/8 by 22-1/2 by 17 inches, with an 18 by 16 by 12 inch interior, so it is a deep, well-insulated cube rather than a flat cargo box.
It pairs well with a second, larger box on the same machine: this one for food and drink, a bed box for optics and ammunition.
When it is the wrong box
Thirty litres is small next to the 45 gallon hard boxes, so it is a cooler first and a cargo box second. At 30 pounds empty it is one of the two heaviest items in this roundup and awkward to lift alone, which is annoying when you are setting camp in the dark.
It also has the lowest average rating of the ten at 4.3 across 126 reviews, and the criticism that recurs most often concerns latch durability over time rather than the insulation. Expect to check the latches seasonally.
9. SuperATV Rear Cargo Box for the Teryx 4 – Best Capacity for Kawasaki
SuperATV Rear Cargo Box for Kawasaki Teryx 4
67 quarts and 63.25 litres
2012 plus Teryx 4
Gas-strut hinged lid
Rubber seal
Pros
- 67 quarts of cargo volume
- Gas struts raise the lid for deep loading
- Rubber seal and latches keep out water and mud
- Hitch-style mount to the bed rails
Cons
- 2012 plus Kawasaki Teryx 4 only
- At 38 pounds it stays installed once fitted
- Long 52 inch footprint needs a full-width bed
The Teryx 4 bed is wide, and the SuperATV rear box takes full advantage of it. Sixty-seven quarts, or 63.25 litres, is the largest hard-shell volume in the roundup, and the gas-strut hinged lid lifts clear so you can load gear at the bottom without crawling in after it.
Owners consistently praise the seal and the latches on wet trails, which is what you would expect from a box this size with a rubber gasket. The wide lid surface doubles as a flat working area on a long day in the stand.
Outside dimensions are 52 by 14-3/8 by 12-4/5 inches, and the box is listed as waterproof. It mounts with hitch-style hardware to the bed rails and comes complete with mounting hardware, so there is no separate parts hunt.
This is the premium end of the price spectrum in the group, and the justification is volume plus gas-strut access rather than material technology. The plastic is a rubber-material shell rather than a heavy steel frame.
What it holds on a hunting load
Two hunters’ worth of gear for a week, or a large cooler plus decoy bags plus an optics kit, all in one sealed container. The 52 inch width suits a full-width Teryx 4 bed without blocking the rear view.
It also works as a camp locker between hunts – once the hunt is over, the same sealed volume keeps muddy kit and wet boots out of the passenger area.
When it is the wrong box
It fits the 2012 and later Kawasaki Teryx 4 and nothing else. There is no cross-platform option.
At 38 pounds it is the heaviest item in this roundup, so plan to install it once and leave it installed. If you need the bed flat every trip, this is the wrong choice no matter how good the volume is.
10. KEMIMOTO Anti-Theft Bed Box – Best for Theft Deterrence
KEMIMOTO UPGRADED Anti-Theft Bed Storage Box Compatible with Ranger
21L and 5.5 gallons
Interior anti-theft lock
Weatherproof lid seal
Polaris Ranger fit
Pros
- Interior mechanism stops the box being carried off
- Sturdier bed mount than the standard model
- Saves bed area while holding tools and gear
- Weatherproof seal keeps gear dry
Cons
- Same 5.5 gallon capacity as the base model
- Water resistant rather than fully waterproof
Almost every box in this category can be unbolted or unhooked and carried off with its contents inside. This one is the exception, and that single feature is the entire reason it is here. The upgraded interior anti-theft locking mechanism prevents the box being lifted out of the bed and walked away with.
It shares the 21 litre, 5.5 gallon footprint with the standard KEMIMOTO box, so you are paying for the security upgrade rather than extra volume. Buyers consistently single out the anti-theft mechanism and the sturdier bed mount as the reason to choose it over the base model.
Fitment runs across several Ranger generations, from the XP 900 and the Full Size 570 through to the Ranger XP 1000 and its Crew variants. Material is LDPE with a weatherproof lid seal, and the box mounts into the bed without drilling.
It carries a 12-month manufacturer warranty, and the average of 4.7 sits on 78 reviews – the thinnest review base in the roundup, which is worth weighing against that score.
What it holds on a hunting load
The same load as the small Polaris boxes: an optics case, a bow or rifle case, a spare ammunition box, a first-aid kit and a dry layer. The upgrade is security, not capacity, so pack accordingly.
For a hunter who leaves a loaded machine at a trailhead or a camp for a full day, that difference is the whole decision.
When it is the wrong box
It is the wrong box if you need bulk capacity, since 21 litres will not take a cooler or decoy bags. It is also only water resistant rather than fully waterproof, and it will not fit a General, a RZR or any non-Ranger platform.
How to Choose a UTV Cargo Box for Hunting
1. Fitment: exact model and year, every time
This is the only criterion with a hard deal-breaker. Every box in this roundup is platform-locked to some degree, and wrong-fit orders are the single most common source of one-star reviews across the category. Check the compatibility chart on the listing, confirm the model year, and if the chart is vague, contact the manufacturer before you order. Our UTV accessory guide covers the matching racks and mounts if you are building the rest of the storage system at the same time.
Universal-fit boxes exist, usually in the entry tier, but they mean straps or a bed-rail clamp and they rattle. For a machine you drive into rough country at speed, exact fit is worth more than versatility.
2. Capacity: buy litres, not marketing gallons
Retailers quote capacity in litres, in US gallons and occasionally in quarts, so the same box can appear as 24 litres or 6.34 US gallons depending on the listing. Use litres as your common unit and convert: 45 litres is about 12 US gallons, 63 litres is about 17, and 78 litres is about 21.
Then subtract what you are already carrying. If a cooler takes 65 litres, a 45 litre box is not a cooler box – it is a gear box, and that is fine.
3. Weather sealing: waterproof is a category, not a promise
Seal claims are not consistent across the category. The A and UTV PRO is rated IP67, the Rough Country Maverick X3 and both SuperATV boxes are listed as waterproof, and the small KEMIMOTO uses waterproof seal language. The Kolpin, Kimpex, large KEMIMOTO and anti-theft KEMIMOTO are listed as water resistant. Treat the distinction literally.
Even a sealed box is not a submarine. Check the gasket for grit before closing the lid, and remember that a box full of wet boots will smell like a wet box for a week regardless of its rating.
4. Lockability: what are you actually storing
Lockable splits into three tiers here. At the bottom are combination-code boxes – the KEMIMOTO 5.5 gallon, the StarknightMT and the anti-theft KEMIMOTO – which deter an opportunistic grab but will not stop a determined thief. In the middle is the lockable Rough Country box, where you supply the lock. At the top there is nothing in this roundup, because a plastic box bolted to a plastic bed is not a gun safe.
If you are leaving firearms or ammunition in the machine overnight, use a lock case inside a locked box, and check your local storage laws before doing it at all.
5. Mount type: bed rail, Lock and Ride, hitch or U-bolt
Lock and Ride holes give the fastest, cleanest install – the three-peg boxes go in and out in under a minute with no tools. U-bolt and hitch-style mounts go into the bed rails and are tougher, but they need tools and they mean the box is not coming off between hunts. Overhead rack mounts preserve the bed entirely and cost you a step-up to load.
Bed extenders are the other option and solve a different problem. A hitch-mounted rack or a bed extender is built for bringing home a harvested animal, not for storing gear, and the community consensus we saw frames it exactly that way – box for gear, extender for harvest.
6. Payload: check the machine, not just the lid
Two ratings matter. The box rating tells you whether the lid can be a seat, which the large KEMIMOTO and the Rough Country boxes claim. The machine rating is the one people forget: if the bed is already carrying a game rack, firewood or a second passenger’s kit, the box weight counts against the same payload ceiling.
Add the box weight to what is already in the bed before you assume the climb out of a creek bed will be fine.
7. Noise and cold: the two things nobody tests
Rattle is the enemy of a pre-dawn approach: a box that knocks against its own hardware on washboard ground carries sound a long way through still air. Over-center latches and rubber-gasketed lids are quieter than ratcheting or toggle latches, and a box that sits tight on its pegs is quieter than one held on a strap. The gas-strut box in slot nine has the least to rattle, because there is no loose hardware knocking against the shell.
Cold matters too. Polyethylene gets stiff below freezing, and a buckle-style latch can be stiff to operate before dawn on a winter hunt. Owners of latch-equipped boxes report checking them seasonally, which is a five-minute job worth doing before season starts.
Price tiers: what you actually gain
Boxes in this category fall into three bands. The entry band gives you a small, sealed, lockable box with tool-free mounting and no insulation – the StarknightMT and the two small KEMIMOTO boxes sit here. The mid band adds real volume, better seals and heavier-duty lids, and it is where the Kolpin, A and UTV PRO, large KEMIMOTO and Kimpex options live. The premium band adds gas struts, large sealed volume and insulated storage, which is the SuperATV RZR and Teryx boxes and the Rough Country Maverick X3.
Most hunters are best served by the mid band, because volume is what actually determines whether your hunting load fits. Buy the entry band only if you already know your fragile gear list fits inside 25 litres.
Keeping it for next season
Wash the box out, dry the gasket, and leave the lid cracked so trapped moisture does not sit against the seal. Do not store wet boots or a bloodied garment in a sealed box between seasons – odour penetrates polypropylene permanently, and the solution is a removable liner, not more scrubbing.
Check the latches and the mounting hardware twice a year, and keep rodents out by running the lid fully closed rather than propped, because a box with a two-inch gap is an invitation. If you are storing over the off-season, the machine itself is a good place for the box – it is what community off-season storage threads keep coming back to.
Frequently Asked Questions
What is the best storage box for an UTV?
The best storage box for a UTV is the one that fits your exact make, model and model year, seals against rain and mud, and holds your fragile gear without eating the whole bed. A bed-rail box with tool-free Lock and Ride or factory-hole mounting installs in seconds and keeps gear dry and secure. A rear box gives more volume for coolers and decoy bags, and an overhead rack keeps the bed completely free for a harvest or a second passenger.
Are UTV cargo boxes actually waterproof, or just weather-resistant?
It depends on the listing. A handful of boxes in this roundup make a waterproof claim – the A and UTV PRO at IP67, the Rough Country Maverick X3, the two SuperATV boxes and the small KEMIMOTO with its waterproof rubber ring seal. The rest are listed as water resistant, which means rain and dust but not submersion. Either way, check the gasket for grit before you close the lid, and drain anything wet before it goes in.
Should my UTV cargo box be lockable?
Yes, if you leave anything valuable in the machine at a trailhead or camp. There are three levels in this roundup: combination-code boxes that deter an opportunistic grab, lockable boxes where you supply your own lock, and no true safe at all. A plastic box bolted to a plastic bed will not stop a determined thief, so store firearms and ammunition in a lock case inside a locked box, and check your local storage laws first.
Do I need a cargo box or a bed extender for hunting?
You usually need both, because they solve different problems. A cargo box keeps optics, ammunition, electronics and dry clothing secure and weatherproof. A hitch-mounted rack or bed extender is built for bringing home a harvested animal and for extending the bed over uneven ground. If you can only buy one, buy the box for gear security and plan your harvest loads with straps and a rack you already own.
What size UTV cargo box fits a cooler and tree stands?
A 45 to 65 litre box. The KEMIMOTO 11.9 gallon box at 45.3 litres takes a full-size cooler plus decoy bags, the Kimpex at 78 litres takes a full camp’s soft gear, and the SuperATV Teryx 4 box at 63.25 litres takes the most in a single hard-shell box here. Tree stand sections are long, so they usually belong in the bed or in a 52 inch wide box rather than in a 20 to 24 litre bed-rail unit.
What are the best UTV accessories for hunting?
Start with a sealed and lockable cargo box, then a gun case or scabbard and a safe ammunition carrier. Add a hitch-mounted game rack or bed extender for the harvest, a front rack for a spare or a recovered load, a light bar for pre-dawn and post-dusk work, and a winch with a recovery strap kit. A dry bag and a spare tyre round out a build that has to handle mud season and a long walk out.
The Verdict: Pick Your Platform First
The best UTV cargo boxes for hunting are not ranked by capacity, they are ranked by fitment. Start with your machine, then pick the volume your gear list actually needs, then decide whether you need a lock or an insulated chamber. Get that order right and the choice takes five minutes; get it wrong and you are packing a return instead of a cooler.
For most Polaris Ranger and General owners, the KEMIMOTO 5.5 gallon box in slot one is the pick we would buy, because it installs in seconds, seals properly and has more owner history behind it than anything else at this size. Defender and Commander drivers should take the A and UTV PRO box, Maverick X3 owners have the Rough Country 45 gallon box and nothing else in this list, and Teryx 4 owners get a 67 quart sealed volume behind a gas-strut lid.
Whatever you choose, test the seal before season opens, load it with your real gear rather than a spec sheet, and check that the bed is still flat enough for a game rack. That last check is the one that saves you a second trip to the dealer. Our 2026 picks are updated as new models land, and the roundup above is the one to come back to when your machine changes.