56L Fender Case Kit

Sale price$649.99
In stock

Unlock 56L of exterior storage — without losing bed space.

IP65 dust & water-proof
84 lb weight rating
No drilling into your truck — easy install
Guaranteed to fit your truck, or your money back
What's on your bed?
Your camper — year / make / model
How does your tonneau mount?

Lockable, weatherproof storage that lives on the outside of your bed — not in it. The 56L Case Kit bundles a 52.8″ hard case with everything needed to mount it across a pair of STAPLL 6x7" Fender Racks, so your gear rides on the fender and your bed stays open for the camper, the bikes, or the load.

IP65 dust- and water-tight, rated to hold 84 lb, with two padlock points and tamper-resistant mounting hardware — the special bits ship in the kit. No drilling into your truck, universal fit, guaranteed to fit.

Case, panels, and rack hardware in one kit.

STAPLL lifetime warranty badge
Truck Camper Magazine Readers' Choice award, Best Innovation 2025
2026 Outdoor Innovation Award badge
Patented US 12,319,239 B2
Protected by U.S. Patent 12,319,239 B2, with additional patents pending. With additional patents pending.

Finish the build.

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Designed in Colorado
Fast Shipping
Ultra Durable
Lifetime Warranty

Unlock Your Truck's Full Potential

Our flagship Fender Racks provide customizable organization that maximizes storage without compromising space, empowering professionals and adventurers with efficient, high-quality gear management solutions.

6in x 7in MOLLE

Our smallest MOLLE - made for mounting virtually any accessory. Use 1 for small hard cases and gas cans, or pair 2 or 3 together for mounting larger items. Our press fit 1/4-20 threads make mounting easy. Shown here in a 20 degree position.

Slide Plate

The Slide Plate allows you to easily install and uninstall your accessories without having to remove the Brace and Thread Plate. It also allows for micro adjustments, no matter the size and shape of your fenders, you'll get a snug custom fit every time.

Thread Plate

The foundation of our Fender Racks, and the heart of our Advanced MTMS™ Platform. Our Thread Plate creates stability, adjustability, and a plethora of untapped accessories and modularity.

Brace

The Brace is the main contact point between your Thread Plate and your bed rail. Paired with either our Track Hardware Kit or Clamp Hardware Kit, the Brace can be mounted on 99.9% of trucks on the market. Both Track and Clamp Hardware Kits are included.

Magnetic Rubber Spacer

A breakthrough for making Fender Racks possible. The Magnetic Rubber Spacer securely mounts between your truck fender and Fender Rack MOLLE Panels to create a safe and solid mount below your bed rail. The spacer can also be applied with PPF Adhesive for aluminum body trucks. (PPF and Adhesive included)

Explore in 3D

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Join the Crew

5,000,000+ miles driven.

Real trucks. Real people. Real builds. Roll with the crew that's redefining how you carry it all.

STAPLL fender rack install
Installation

No drilling. No guesswork.

Bolt-on install with the included universal hardware — most builds are dialed in under an hour. Walk through the steps or grab the full manual before you start.

Fitment & compatibility.

STAPLL is a universal, no-drill platform — guaranteed to fit your truck or your money back. Here's the quick version.

Universal — fits like custom

Our brackets are universal, but the dovetail micro-adjustment design dials each one in to your exact bed rail — so a universal bracket lands like a custom fit. No drilling.

Low-profile intrusion

Reaches just 1.75″ into the bed in Position 1 — clearing most campers — and adjusts deeper when needed.

Paint-safe

Magnetic rubber spacers + PPF mount it scratch-free and remove clean with no residue.

Compatible With

  • All full-size & midsize trucks
  • Caps & camper shellsGFC, AT Overland, Alu-Cab, Tune & more
  • Slide-in truck campers
  • Tonneau coversTop-mount & exterior t-slot: Retrax, Roll-N-Lock, Diamondback
  • DualliesSingle bracket per side — 6x13 recommended
  • Stock Toyota bed-rail channel
  • MOLLE, RotopaX, MAXTRAX & Quick Fist gear

Needs a Custom Approach

  • Honda RidgelineUnibody bed geometry
  • Rivian R1TPowered tonneau & bed design
  • Tesla CybertruckOne-of-a-kind rail geometry
  • Flush tonneau covers with interior railsOnly when there's no exterior t-slot to mount to

We adapt STAPLL to these all the time — book a quick consult →

The details

Specs & materials.

Exterior dimensions52.83″ L × 15.75″ W × 5.67″ D
Interior dimensions50.31″ L × 13.39″ W × 5.12″ D
Panel dimensions6″ × 7″
Weight rating84 lb
Product weight30 lb
Dust & water resistanceIP65 rated
MTMS™ bracket6061 anodized aluminum & zinc-plated steel
MOLLE panel3mm zinc-plated, powder-coated steel
Hardware18/8 passivated stainless
Panel press-fit nuts1/4-20 threads
Mounting positionsVertical or 20°
Bed-rail stack height0.55″ thick
From the community

Real rigs, real footage.

See how owners run their builds. Tag @stapll.co for a chance to be featured.

Support

Frequently asked questions.

The questions we hear most about the 56L Case Kit. Don't see yours? Get in touch — we answer fast.

Contact Us
Yes — two padlock points on the case, so you can lock the lid with your own padlocks. And the case can't simply be unbolted and walked off: the racks mount with tamper-resistant security hardware, and the special bits come in your kit. Most theft is opportunistic, and most opportunists aren't carrying the bit for it.
Not necessarily. It's much easier with the camper out, but plenty of our customers install with the camper still in the bed. It comes down to the gap between your truck and camper — if you can get your hands in there to turn a wrench, you can probably do it. Often just raising the camper on its jacks is enough. But pulling it out is easier, and that's half the point of a slide-in.
Yes — compatible with Go Fast Campers and most camper/topper brands with our Capper Lift & Seal Kit.
Never — a magnetic rubber spacer and paint protection film sit between your fender and the rack, and both remove clean if you ever take it off.
Just 1.75″ in Position 1 — clears most bed campers. Mount deeper if needed, up to 3⅝″.
Orders ship in 1–3 business days, with tracking on every order. Shipping policy →

56L OF EASY ACCESS DRY STORAGE

Consider the STAPLL system as your garage on the road. Keep your tools, hoses, and dirty gear out of your camper.

56L Fender Case Kit

Overland Kitchen

Build a custom backcountry kitchen without blocking access to your bed or tailgate.

  • 5 stars: 54 (92%)
  • 4 stars: 3 (5%)
  • 3 stars: 1 (2%)
  • 2 stars: 0 (0%)
  • 1 star: 1 (2%)
Some of the reviews shown are from related products the merchant grouped with this one.
R
Redleg_va
Game changer

Adding the stpll 48x10 side racks and to be honest they just sat on the side of my rig. I have now attached Apache cases and it frees up so much bed space. It is a game chaget

P
Philip C.
Great product and quality.

5/5 stars

A
Adam in NC
What a GREAT investment in my rig!!!

Simply put, I lack storage in my truck, when loaded up for a 3 month jaunt. I'd seen the STAPLL rack system online, and decided to give it a whirl. SUPERB choice! It's ROCK SOLID when mounted, and gave me all the space I needed to declutter the truck cab. While the mounting my seem daunting, when the written instructions (very well done, very simple) are combined with Stapll's install videos, it couldn't be any more straightforward. I had it done in two hours. I do recommend, with the fender case mount, that you figure out where to mount the Molle panels on the case first, then mount the over-rail plates securely. Then measure "from the exact CENTERS of those plates" to determine the exact center of where each molle panel should attach to the backside of the case. I did that, and when I had everything secure, the case fit PERFECTLY on the rail plates. First time, bingo! Like the system so much, I've ordered a Rotopax mount and single over-rail-plate, to use as a greywater tank for the Scout camper. SUPER well built, just a great great thing to add and increase storage. I'm confident that, with the PPF film and the magnetic stabilizers (prevents case from lateral movement when mounted), it won't mar my paintjob on the truck. The included chains for the dropdown make it the easiest access for a "camp table" you could imagine. And don't forget Stapll's "Tack Strap" - you'll want one if you get the 56L Fender Case. Again, super well thought out design - don't hesitate, you'll love it!

K
Keith Karafa
worked out good

Everything worked out good, extra storage is always a good thing

J
John Bruce
Great Product and even better service

I have the #114 build on the website. I had been looking at these racks and then when I found out Stapll was based in Durango, I had to go see them in person. The build was flawless and the customer service was first rate. I was so happy with their service, I asked if they could install and upgraded diesel heater in my truck camper. They approached it by saying, "let us take a look and make sure we can do that" which I appreciated and when my new heater came in, they installed it and it works perfect.

B
Beau Willis
Built for the Rough Stuff

We’ve had the 56L Fender Case fitted to our truck for over 8,000 miles now, including some seriously rough roads like the Dalton and Dempster Highways, and it’s held up incredibly well.

It’s a really solid, well built bit of gear and has been perfect for storing bulky items outside the camper while keeping everything secure and easy to access. Even after plenty of corrugations, dust, mud and rough roads, we haven’t had any issues with the case or mounting system.

We’ve been genuinely impressed with it and would happily recommend it to anyone building an overland or touring setup.

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B
Brady Lampert
Must have on any overland build

I’ve been extremely happy with this fender case. Installation was surprisingly easy, and the best part is you don’t have to drill into your truck bed—only a few holes in the case itself. STAPLL’s installation video is excellent and makes the whole process simple. Recommend watching that while installing!

The quality is outstanding. The case is built like a tank, and the machined metal is top-notch. Customer service was also above and beyond, answering every question I had in person and through email. These guys are just great.

Right now we use ours to store/cook with a two-burner camp stove with plenty of room left for recovery gear. I’m sure as seasons change that’ll change what I keep in there. It’s one of the most useful upgrades we’ve made to our truck, and I’d absolutely recommend it.

B
Brady Lampert
Quality + great customer service

Man where do I begin. Got two 6x13 on my driver side - we use one for grey water 5g rotopax and the other is a 2g diesel tank. This set up makes using the sink in our Outpost Camper less stressful vs draining something down into a bucket and figuring out where to dump it. Not only does it simplify camping which is a bonus - the machined metal is top quality best I’ve seen. These guys made install videos so if you ever get hung up you can check those out but after installing one you’ll remember most of the steps! Easy install and was able to do it with the camper in the bed (had to raise it up a bit)..Been driving down rough roads for months haven’t had to worry about the 6x13 staying tight. This is built to last for a very long time - been asked about it so many times! And it looks badass. If you’re thinking about getting this..just do it. Thanks Stappl!

I
Ian
Updated review

Purchased a 56L box with the smaller mounting brackets back in April. While I am satisfied overall with the look, nuances I ran into: if you have a diamondback tonneau cover, you HAVE to get their Capper Lift and Seal kit (I did not at first). The paper instructions within the box were at first confusing, but I was able to decipher them better with the company videos on YouTube. The Lift and Seal kit was pretty straightforward. I’m looking forward to the extra space on my up coming trip.

S
Shane Battifora
Very good

I wasn’t to happy with the bump stops. The fact that you have to stick them on the truck and pull them out every time you don’t use the system was kind of awkward.. (had to modify the bump stop location.) Over haul very useful and fit my aftermarket hard case like a glove.

D
David Franklin
Great quality, expensive for the amount of storage you end up with, but does the job.

I wanted to share my thoughts on the Stapl Hard Case Bundle. I have it on my 2024 GMC 2500 along with a Four Wheel Camper Hawk. I’ve had it for about six months now. Didn’t want to write a review until I’ve done some real trails with it, just finished up one week doing the Continental Divide Trail route as outlined by Overland Bound followed by one week exploring Bears Ears, Valley of the Gods and driving down to Expo West. Prior routes over the last six months have been easier. First the good points. The case is definitely waterproof, holds my traction boards, various soft shackles, gloves and pully shackle. I added chains to make it function like a table when open so easier to go through the stuff in it. It has not damaged the paint job on my truck. Some have questioned if it affects the view out the side mirror, I haven’t found this to be an issue. I have it on the passenger side and I’m driving an HD truck with towing mirrors, so to me this is a non-factor, may be different on your truck. Keep in mind that passenger side mirrors are already wide view so I would think it would be similar on a ½ ton. The materials of the bracket are first rate, definitely machined well and top quality. Downsides, well, it is expensive for the amount of actual storage you get. Also, the case looks like a rifle case and people would come up and ask to see my gun, so I spent $10 on Amzn and got a sign for it. The holes to lock the case are small, so I’m using some pretty cheap locks to secure it, would not take much to cut those. The latches on the case aren’t great. I’m having an issue with a couple being very hard to open and there are like 9 or 10 of them. It’s an off-the-shelf case, I think it could be a little better. Being outside the truck, it does collect mud but hey, it is what it is. Finally, keep in mind that you can’t remove the camper with the standard jack mounts with the case on, so what you have to do is raise the camper up a little bit, remove the case, then remove the camper. Not a huge deal, but just an extra step when loading or unloading the camper. Would I buy it again? Maybe, but I would probably lean towards the full Molle Rack version and get my own Pelican cases or something like that. Maybe two or three smaller cases to better organize my stuff. I did actually have to do a recovery on this most recent trip, and it was nice that I could just grab the stuff out of the case, so overall I’m happy with it, but as always with gear second thinking my choices. I will say dealing with the guys at Stapl has been great, it’s a small company with great customer service both pre and post-sale.

H
Hollace LaFontaine
Trailhead Bundle Awesome Quality

Bought the Trailhead bundle and had awesome “immediate” support from Charlie for troubleshooting mounting issue we had on our 2019 Ram 1500 with 4 Wheel Camper. Needed the longer 13” brackets which they shipped next day air. The extra length made installation a breeze. Also liking the more robust attachment and the ability to easily open the storage case.

I’m a retired Aerospace/Defense Engineer that supported military products (Steel/Aluminum/Compsit) and I’m Very impressed with the quality of both the metal and plastic products. Awesome Powder coating finish.

If you ever need someone to test your future products, we would love to support your efforts. I have extensive experience troubleshooting material failures.

Again, thank you for your quick resolution to our installation of your products.

S
Steve DeMartin
Works great for extra storage

Added to my camping kit. This holds my diesel heater and a shelf for it to sit when in use. Also used 2 of the single mounts to carry roadside tools and essentials as camper space is limited.

J
Jan Sears
Perfect Grey water solution

I purchased the 6x13 and mounted a 5 gal rotopax to act as my grey water collection on my Outpost 6.5. It was easy to install and has been trouble free for over 3000 miles! Thank you!

V
Vic Zanchetta
Side Box and Waite Water Tank FWC Hawk

Bought three 6 x 13 brackets to added side storage box and a Rotopax waste water tank for our Four wheel Camper Hawk slide in. Perfect.

Always Dialed

Every fender has dead space. Claim yours.

Innovative racking that turns an unused corner of your truck into mounted, locked-down gear. Guaranteed to fit or your money back.

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