Frequently asked questions.
Fitment, covers, install, shipping, warranty — answered straight. Can't find it? We answer 7 days a week.
Fitment
Will it fit, and how do I know?
Yes — and it's guaranteed. The MTMS™ platform is a universal, no-drill system that bolts to the bed rail on virtually every truck on the market. If it doesn't fit yours, you get your money back.
This is the question we get most, and it's a fair one — "universal" usually means "fits nothing well."
Our brackets are universal, but the dovetail micro-adjustment design lets each one dial in to your exact bed rail. The result lands like a custom fit, not a compromise. That's the whole reason the MTMS™ platform took years to engineer.
Just 1.75″ in Position 1, which clears most bed campers. You can mount deeper if your build needs it — up to 3⅝″.
On top of the bed rail, the bracket only stacks 0.55″ — low enough to sit under most covers and shells.
Duallys work, with one important limitation: only a single bracket per side fits cleanly around the wider rear wheel well. That means the 6x7″ and 6x13″ are your options — the 48x10″ and the 56L Fender Case Kit need more continuous fender than a dually has.
No. A magnetic rubber spacer and paint protection film sit between your fender and the rack, so metal never touches paint. Both remove clean with no residue if you ever take the rack off.
Depends on what you're mounting and what's on top of your bed. Two tools will get you there in about a minute:
- Rack Recommender — answer a few questions and we'll match the right rack to each side of your truck.
- Build My Rack — if you already know what you want, pick your racks and accessories and load the whole build into your cart at once.
Still stuck? Book a free build consult and a human will sort it with you.
Covers & Campers
Tonneaus, cappers, toppers, and slide-ins.
Yes — but which hardware you need depends on how your cover mounts, and the two are not interchangeable. This is the single most common thing people get wrong, so it's worth 30 seconds:
- Top-mounted cover (sits on top of the bed rail) → you need the Capper Lift & Seal Kit. It lifts the cover just enough for the rack to pass beneath and creates a weather-tight seal.
- Exterior T-slot cover (has a T-slot rail on the outside, like a Retrax) → you need the T-Slot Hardware Kit. The rack bolts into that track.
Not sure which you have? Don't guess — send us a photo and we'll tell you in a minute.
Yes. The rack mounts cleanly beneath hard shells and toppers — SmartCap, GFC, and most other brands, using their stock clamp hardware.
Cappers sit on the bed rail, so you'll want the Capper Lift & Seal Kit for a clean, weather-tight seal.
Yes — pop-ups and hard-side slide-ins both work, including Four Wheel Campers and Outpost. The rack unlocks fender storage you couldn't otherwise reach with a camper in the bed.
One thing to check: with a camper, confirm the 48x10″ position clears your camper overhang. We can verify it on a free build call.
Yes — but this one takes a custom modification, and we want you to know that up front.
Most cappers sit on top of the bed rail. Some flush-mount styles instead have a lip that wraps down around the outside of the rail — right where our brackets install.
The fix is straightforward and permanent: the capper's exterior lip gets cut and notched around the brackets. The notches let the lip clear our hardware, so the capper drops back down and sits flush on the rail again. We've done this on plenty of trucks and it works.
The brands that typically build this style are A.R.E., Leer, SnugTop, and Ventura Camper — though not every model from every brand has the wrap-around lip. Send us a photo of your rail and we'll tell you in a minute which style you have.
You'll still need the Capper Lift & Seal Kit — that part doesn't change. The notch gets the bracket to the rail; the kit lifts and seals the capper on top of it.
Yes. It comes down to how much of your bed rail your rack actually occupies — and there are two answers.
Most bed racks only touch the rail in two spots. They clamp at a couple of feet and leave the rest of the rail wide open. In that case there's nothing to solve: slide our brackets to an open section of rail, or shift your rack's feet slightly, and both systems live on the same rail without touching. Most people are done in one adjustment.
Some racks run the full length of the rail — Leitner-style, and others like it. There's no open rail left to offset into, so the two systems have to share the same real estate. Customers have done it both ways:
- Over the top — our bracket mounts on top of the bed rack that's already installed.
- Underneath — our bracket goes under it, between the rack and the bed rail.
We'll be straight with you: our brackets are designed to mount directly to the bed rail. Going over or under a full-length rack is something we'd want you to look at closely on your own truck first — it depends on how your rack clamps and how much room it leaves. Send us a photo of your rail and we'll work through it with you. The fit guarantee covers you either way.
Not with the right kit. That's exactly the problem the Capper Lift & Seal Kit solves — it raises the cover just enough for the bracket to pass under it, then seals the gap so you keep the cover's weather integrity. Skipping it is what causes leaks.
Install
What it takes to get it on the truck.
No drilling. Ever. The bracket bolts to your bed rail using the universal hardware in the box — track or clamp, depending on your truck. It's fully reversible.
Most builds are dialed in under an hour with basic hand tools. Take your time on the micro-adjustment — that's what gives you the custom-fit result.
Yes and no. It is certainly much easier with the camper out of the bed — but plenty of our customers have done the install with the camper still in the truck.
It really comes down to your rig and the space between your truck and your camper. If you have enough room to get your hands in there and turn a wrench, you can probably do the install without pulling it. Sometimes all you need is to raise the camper up on its jacks — no full removal required.
That said, it's easier if you just pull it out. Which is one of the big advantages of owning a slide-in in the first place.
No — and you don't need extensions. The racks come off in seconds. Pull the slide plate bolts on top of the bracket, slide the accessory off, and the jacks have a clear path.
It adds about 60 seconds to your total load and unload. Here's the loading sequence:
- Remove the slide plate bolts and slide the racks off.
- Back the truck under the camper as usual.
- With the camper still up on its jacks, slide the racks back on and tighten the slide plate bolts.
- Lower the camper.
Reverse it when you pull the camper. That's the whole trick — the racks come off, so the jacks never have to work around them.
Absolutely. Install it yourself, or have it done professionally.
Every rack ships with universal mounting hardware — both track and clamp options — so you're covered regardless of what your truck uses. Fasteners are 18/8 passivated stainless.
The only thing you may need separately is cover-specific hardware: the Capper Lift & Seal Kit or the T-Slot Hardware Kit, depending on your setup.
Yes. Because there's no drilling, the whole system comes off clean — the rubber spacers and paint film peel away with no residue and no holes. Selling the truck doesn't mean losing the rack.
Products & Specs
Sizes, materials, and what you can hang on them.
| Rack | Panel | Load rating | Weight | Best for |
|---|---|---|---|---|
| 6x7″ | 6″ × 7″ | 50 lb | 6.5 lb | Compact — one accessory, tight spots, duallys |
| 6x13″ | 6″ × 13″ | 50 lb | 7.5 lb | RotoPax, recovery boards, campers |
| 48x10″ | 48″ × 10″ | 84 lb | 32 lb | Full-length — mount fuel, tools, and recovery together |
| 56L Case Kit | 6″ × 7″ mounts | 84 lb | 30 lb | Lockable, IP65 weather-tight storage |
Full specs and materials are listed on each product page.
- MTMS™ bracket — 6061 anodized aluminum & zinc-plated steel
- MOLLE panel — zinc-plated, powder-coated steel (3mm on the 6x7″ and 6x13″, 5mm on the 48x10″)
- Hardware — 18/8 passivated stainless
- Panel press-fit nuts — 1/4-20 threads (the 48x10″ adds #10)
Built for weather, salt, and washboard roads — and backed by our warranty.
It's a MOLLE panel with press-fit threads, so most of the overland ecosystem bolts straight on: RotoPax fuel and water packs, MAXTRAX and other recovery boards, Quick Fist clamps for shovels and axes, hard cases, bike mounts, and kitchen setups.
If it has a bolt pattern, it'll almost certainly mount.
Yes — mount it vertical or at 20°. The angle helps clear wider gear and tucks the load in closer to the truck.
Racks are sold individually, and most builds run one per side — so a symmetric build is two racks.
Some setups need a pair on a single side: recovery boards and third-party hard cases span across two racks. The Rack Recommender works this out for you and tells you exactly how many you need.
Yes. There are two padlock points on the 56L Case — add your own locks and the lid is secured.
Not easily. Our racks mount with tamper-resistant security hardware — your kit ships with the special bits needed to tighten and loosen it. A thief walking up with a standard socket set isn't getting it off.
We'll be straight with you: if someone is determined enough, they'll break a window to get at what's inside your truck — that's true of any vehicle. What security hardware does is put you outside the easy target set. Most theft is opportunistic, and most opportunists aren't carrying the bit for it.
Stack it with the two padlock points on the 56L Case and you've got two layers between your gear and a bad day.
Shipping
When it leaves and how you track it.
Orders ship in 1–3 business days, with tracking on every order.
You'll get a tracking link by email as soon as it ships. If it hasn't turned up or the tracking looks stuck, reach out — we'll chase it down for you.
Returns & Warranty
What happens if it doesn't work out.
Simple: if it doesn't fit your truck, you get your money back. We'd rather eat a return than have you stuck with a rack that doesn't work.
First, we'll try to make it fit. Our team works with you directly to confirm the product genuinely doesn't fit your truck — send us photos and we'll walk through it. Nine times out of ten there's a mounting position or a hardware option that solves it. If there truly isn't one, you get your money back.
Two conditions: it must be returned within 30 days of delivery, and it must come back with all parts and the original packaging. Test-fitting it is fine — that's the whole point.
Yes — hassle-free returns, no interrogation. Three conditions:
- Items must be unused.
- Items must be in their original packaging.
- Returns must be made within 30 days of delivery.
Change-of-mind returns carry a $60 restocking fee, and return shipping is paid by you.
Why there's a fee — the honest version. When a rack comes back, it doesn't go straight back on the shelf. A person here opens it, counts every piece of hardware, and inspects the panels and brackets for scratches, bends, or install marks. Then, because the box has been opened and the rack may have been on a truck, we can't sell it as new — it goes out as open-box at less than full retail. The $60 covers a fraction of that; it isn't a penalty for changing your mind.
Fender Racks carry a Limited Lifetime Warranty. Accessories carry a 1-Year Warranty.
File it online and we'll take it from there — photos help us move fast.
Discounts & Dealers
Military, first responders, and shops.
Yes — 10% off for active duty, veterans, and first responders. Verify once through GovX ID and your discount applies at checkout.
We'd love that. Dealers get wholesale pricing, marketing support, and install training — whether you're a camper dealer, 4x4 outfitter, accessory shop, or bike shop.
Send us photos of your rig and we'll put it in the Build Gallery. Takes about two minutes.
No answers for that.
Try a different word — or just ask us. We answer 7 days a week.
Ask us directly →Still not dialed?
Our crew rides what we build. Ask us anything — fitment, gear, or a build you're planning.