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A pickup rear floor is a black hole—ropes, boots, and jumper cables disappear under the back seat, jamming forward every time you brake. A dedicated box turns that wasted gap into organized, accessible storage, and the right one locks down tight so nothing crashes into your passengers’ legs. This guide walks you through the best current options, from bolt-together modular units to one-piece trays, so you can stop the gear shuffle with a box that actually fits your specific truck.
I’m Min Islam — the founder and writer behind Trending Car. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Whether you drive a half-ton or a heavy-duty, the right back seat storage box keeps your tools quiet, your straps secure, and your cab clean without drilling a single hole—just match the year, cab, and subwoofer requirements from your truck’s build sheet and you are done.
Our Picks at a Glance
How To Choose The Best Back Seat Storage Box
Your truck’s rear floor has a specific shape and a hidden bolt pattern—buy the wrong box and you get rattles, gaps, or a box that slides around. Focus on these three things first.
Exact Truck Fitment (Year, Cab, and Subwoofer)
Manufacturers design these boxes for specific model-year ranges and cab configurations. A box for a 2015-2026 F-150 SuperCrew will not fit a SuperCab or a 2014 truck. Some boxes also conflict with factory subwoofers under the rear seat—double-check the listing says “without subwoofer” or “fits around subwoofer” before you buy.
Material and Build Stiffness
Most boxes use ABS plastic (acrylonitrile butadiene styrene, a tough rigid plastic that resists heat warping) or high-density polyethylene (HDPE, a durable food-grade plastic that handles impact well). Thicker walls—around 1/8-inch or more—resist sagging under heavy loads like tool kits and prevent the box from flexing and popping apart over bumps.
Mounting System: Strap vs. Bolt-Down
Strap-in boxes are easy to install (usually under two minutes) but can slide around if the straps loosen. Bolt-in boxes attach to factory seat bolts or frame holes, offering a rock-solid hold, but they require aligning holes and may need a small adjustment or an extra zip tie to secure every corner perfectly.
Quick Comparison
| Model | Best For | Number of Compartments | Item Dimensions (DxWxH) | Mounting Type | Amazon |
|---|---|---|---|---|---|
| MAXDOM Under Seat Storage★ Best Overall | Modular versatility plus a side drawer | 3 | 54.7″D x 12.6″W x 7.7″H | Insert Mount (bolts to seat bolts) | Amazon |
| KitsPro 18-Gallon Under Seat StorageBiggest Capacity | Ultra-large 18-gallon capacity with foam dividers | 1 | — | Bolt-together (no-drill) | Amazon |
| DNA Motoring SBOX-002 | Quick strap-in fit for older GM trucks | 1 (with dividers) | 7″D x 56″W x 17″H | Free Standing (straps) | Amazon |
| KINGGERI Under Seat Storage Boxes | Budget-friendly factory-look replacement for modern GM | 1 (removable baffle) | 30″D x 18″W x 10″H | Under Seat (bolts to factory studs) | Amazon |
| Husky Liners Gearbox 9241 | Rock-solid one-piece tray for older Ford SuperCrew | 1 (removable dividers) | — | Strap-in | Amazon |
In‑Depth Reviews
1. MAXDOM Under Seat Storage Fit for (2015-2026) F150 SuperCrew/Crew Cab
Our pick — over 4.5★ from 200+ verified ratings; the strongest balance of quality and price.
Three bolt-together modules that turn dead floor space into organized gear zones with a side drawer you can reach from the door.
You get three separate boxes that bolt into one rigid unit and then secure to your truck’s factory seat bolts—no drilling needed. The clever part is the side-slide drawer that slides out when you open the rear door, so you grab a drink or a towel without flipping the seat or unloading everything on top. At 54.7 inches deep, 12.6 inches wide, and 7.7 inches tall, it fits the full-width void and leaves seat fold and legroom untouched. Buyers report the 3-piece bolt-together design is easy to assemble and bolts to existing seat bolts for sturdiness.
It holds 3 compartments compared to the 1 compartment in the KitsPro 18-Gallon box below, giving you more organizational zones for separating jumper cables from groceries. The ABS hard plastic with a matte surface resists scuffs and cleans easily. The only catch is that the assembly holes may not line up perfectly in every truck—a few owners had to wiggle the sections together, though once bolted it stays sound and does not shift.
If you want organized access without seat-flipping, this is the most versatile under-seat solution for late-model Ford and Super Duty crew cabs.
Why it stands out
- Side-slide drawer for quick-access items without flipping the seat
- 3 compartments vs. 1 in most single-piece boxes
- Bolts to existing seat bolts for a sturdy hold
Watch for
- Hole alignment may require minor adjustment
- Fits only SuperCrew/Crew Cab (not SuperCab)
- Side drawer only accessible from one side (passenger rear door)
Reach for this if: you want modular organization and hate reaching under a flipped seat to find small items.
Look elsewhere if: you have a SuperCab (extended cab) or want a single-piece tray that needs zero assembly.
2. KitsPro 18-Gallon Under Seat Storage for 2015-2026 Ford F-150 SuperCrew
An 18-gallon modular system built from four interlocking sections that together hold gear flat and quiet under the seat.
This is the volume champion—18 gallons of organized space split across four bolt-together ABS sections, plus three foam divider panels with molded cutouts. Lay a fishing rod or a recovery strap flat across the box without it bending or sliding. The textured matte-black finish resists warping in hot sun, and the anti-slip surface keeps tools from rattling over bumps. It is specifically 3D laser scanned for 2015-2026 F-150 SuperCrew and 2017-2026 Super Duty crew cabs, and it works around factory floor mats and subwoofers.
It has a different shape profile than the MAXDOM’s 54.7-inch-long box—better for deeper loads in a shorter floor section. However, owners mention a major installation headache: one reviewer noted only got half of 16 screws in after an hour, with bolts barely engaging and square mounting holes too large. The box itself is rigid and holds a ton once assembled, but the hardware fitment is inconsistent.
Go for this if 18-gallon capacity is your priority and you are comfortable with a fiddly bolt-together assembly that may need a zip tie or two to lock everything tight.
Why it stands out
- 18-gallon total capacity—largest in this lineup
- Foam dividers keep long gear flat and silent
- Waterproof, washable surface rinses clean with a hose
Watch for
- Hardware holes often misaligned; screws may not engage fully
- Assembly takes 30+ minutes and may require extra zip ties
- Only fits 2015-2026 Ford SuperCrew and Super Duty (no GM)
Pick it for: the largest single under-seat volume available for late-model Ford trucks—great for hunters and overlanders carrying long gear.
skip it if: you want a quick install or a single-piece box with no screw-together steps.
3. DNA Motoring Under Seat Storage Box Compatible with 07-18 Silverado Sierra 1500
A long 56-inch strap-in tray built for older Chevy and GMC crew cabs that installs in two minutes flat.
This box stretches 56 inches wide, 7 inches deep, and 17 inches tall—a full-width tray that fills the entire under-seat void in 2007-2018 Silverado and Sierra 1500 crew cabs (and their 2500/3500 HD siblings). It mounts with included straps, not bolts, so you can drop it in and strap it down in under two minutes. The ABS plastic with matte bump texture feels thick and durable, and the removable dividers let you separate tool kits from first aid supplies. Customers note it fits perfectly with heavy-duty floor liners—one buyer mentioned it was a perfect fit for a 2007 Chevy Silverado 1500 crew cab LTZ even with heavy-duty floor liners.
At 56 inches long versus the KitsPro 18-Gallon box’s 23.23-inch depth, it covers more floor area but is shallower. The strap mount is simple but some owners mention the release buckles feel upside down, making strap tightening awkward, and the box can slide slightly if the straps are not cinched very tight. It also lacks a lock or bolt-down security, so it stays put with friction and straps only.
If you drive a 2007-2018 GM crew cab and want the fastest possible install with full-width coverage, this is your box.
The strong points
- 56-inch length covers the entire under-seat floor
- Two-minute strap-in installation with no drilling
- Removable dividers with grooves for long items like umbrellas
The weak points
- Straps may loosen over time; box can slide
- No hard mount to frame—moves if you off-road hard
- Excludes 2007 Classic models—double-check year
Best for: GM truck owners who want a simple, fast install with full-length storage and don’t mind a slight strap adjustment after a few days.
Not for: anyone who needs a bolt-down security tie or drives aggressively off-road where a loose box would slide around.
4. KINGGERI Under Seat Storage Boxes Compatible with 2019-2026 Chevy Silverado 1500/GMC Sierra 1500
A bolt-in tray that mimics the expensive OEM Chevrolet accessory for roughly half the price.
Designed specifically for 2019-2026 Silverado and Sierra 1500 crew cabs (plus 2020-2026 HD models), this box bolts to factory floor studs using the included hardware. The ABS plastic body holds a 1-cubic-foot capacity and supports up to 25 pounds. It comes with a removable baffle that you can pop out to store larger items like a folded emergency blanket or a backpack. Owners say the installation is straightforward but note the directions are wrong—one buyer reports you should use the included nut on the factory stud and the factory nut on the spacer bolt, not the other way around.
Unlike the MAXDOM’s 3 compartments, this box uses a single large compartment with one removable divider, giving you less organizational flexibility but a cleaner look that reviewers point out is identical to the Chevy version. The catch: it requires trimming factory rear floor liners for a flush fit, and mounting holes may not line up perfectly without some effort. It also has no lock, so valuables stay hidden but not secured.
A solid budget alternative to the pricey GM factory tray if you have a newer Chevy or GMC and are comfortable with minor trim work.
Good points
- Matches + OEM Chevy tray at a much lower tier price
- Removable baffle adapts to different gear sizes
- Simple 10-minute bolt-in installation
Bad points
- May require trimming factory floor liners
- Mounting holes may not align perfectly without force
- No lock for securing valuables
Reach for this if: you want the clean factory-look tray for your 2019+ GM truck without paying the premium price.
pass on it if: you need a lockable box, aren’t comfortable trimming floor mats, or drive a Honda Ridgeline (it does not fit).
5. Husky Liners Gearbox Storage Systems | Fits 2009-2014 Ford F-150 SuperCrew
A 7-pound single-piece tray with removable dividers that straps into older Ford SuperCrews and stays put.
Husky Liners makes one-piece under-seat trays that require zero assembly—you drop it in, strap it down with the included straps, and load your gear. At 7 pounds it is the lightest in this comparison, and the anti-skid textured surface minimizes cargo shifting over bumps. The removable dividers are made of a heavy Styrofoam-like material but are sturdy enough to separate a 20-foot tow strap from a 130-piece tool set, according to owners. It fits only 2009-2014 Ford F-150 SuperCrew without a subwoofer—it will not fit SuperCab or trucks with factory subwoofers under the seat.
Unlike the 3 compartments in the MAXDOM box, this tray relies on just a few removable dividers, so you get fewer organizational zones but a simpler layout that never needs assembly. Build quality is high-density polyethylene and thermoplastic elastomer (HDPE/TPE, a durable, impact-resistant plastic compound), and Husky backs it with a lifetime guarantee. Reviewers confirm it fits perfectly under the seat on top of Weathertech floor mats and keeps gear from sliding around under braking.
If you have a 2009-2014 F-150 and want a dead-simple, bombproof tray that needs no screws or assembly, this is the one.
The strong stuff
- One-piece design—zero assembly required
- 7 lbs keeps it light enough to lift out for deep cleaning
- Lifetime guarantee from a well-known US brand
The weak stuff
- Only fits 2009-2014 F-150 SuperCrew (no GM, no newer Ford)
- Divider material is stiff foam, not ABS plastic
- No aft-secure mount—straps only; can slide if not tight
Ideal for: owners of 2009-2014 Ford SuperCrew who just want a drop-in tray with lifetime backup and no hassle.
Not ideal for: anyone with a newer Ford or a GM truck, or anyone who needs a bolt-down lockable box.
Understanding the Specs
Number of Compartments
This tells you how many separate or divided storage zones the box creates. More compartments (like 3 in the MAXDOM) let you separate recovery gear from groceries, while a single compartment with removable dividers (like the KitsPro) works better for long straight items such as fishing rods or rifles. Check whether the dividers are plastic-molded (permanent) or removable foam/plastic so you can adapt the space to your gear loadout.
Mounting Type: Strap vs. Bolt-Down
Strap-in boxes (DNA Motoring, Husky) install fast and are easy to remove, but they may shift over time if the straps loosen. Bolt-down boxes (MAXDOM, KitsPro, KINGGERI) attach to factory seat bolts or frame studs, giving a rock-solid connection that prevents rattles and shifting during hard turns—but they require aligning holes and can be tricky if the threads or hole positions are slightly off. Your choice depends on how often you want to pull the box out for deep cab cleaning.
FAQ
Will a back seat storage box fit if I have factory floor mats under the seat?
Can I still fold the rear seats up with a storage box installed?
How do I clean the box if it gets muddy or spills coffee?
Do I need to drill into my truck floor to install one?
Will any of these boxes fit a SuperCab (extended cab) instead of a Crew Cab?
What is the difference between ABS and HDPE plastic in these boxes?
Can I lock the storage box to secure valuables?
What tools do I need to install a bolt-together box?
Final Thoughts: The Verdict
For most people, the back seat storage box winner is the MAXDOM Under Seat Storage because its 3-compartment design with a side-slide drawer gives you real organized access without flipping the seat, plus it bolts to factory bolts for a rattle-free hold. If you want the absolute largest payload capacity for long hunting gear or recovery straps, grab the KitsPro 18-Gallon box. And for a simple, zero-assembly drop-in solution for older Ford SuperCrews, the standout is the Husky Liners Gearbox with its lifetime guarantee.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of July 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, Trending Car earns from qualifying purchases. This does not affect which products we feature.