The Mammoth Overland XLE — nicknamed “Xtinction-Level Escape” — is the brand’s most capable off-road trailer to date, starting at $123,994. Built on the TL’s full-height platform — nine feet tall, 22 inches of ground clearance, all-aluminum aircraft-grade construction — the XLE combines the spaciousness of the TL with the hardcore survivalist DNA of the ELE, then adds capabilities that go beyond either: bulletproof windows throughout, a pressurized cabin with dual medical-grade HEPA filtration, 360° night-vision CCTV, a 37-millimeter flare launcher, remote-activated sonic defense, and a 1,200Ah battery system.
The Short Answer
The XLE is what you get when Mammoth Overland stops asking “how capable can a trailer be” and starts asking “how capable do we want it to be.” It’s not the trailer for everyone — at $123,994, nothing about the XLE is designed to be broadly accessible. It’s the trailer for buyers who want a genuine mobile operations center: a fully self-sufficient, defensible, connected basecamp from which they can operate indefinitely, regardless of what’s happening in the world outside.
Full Specifications
| Spec | Detail |
|---|---|
| Starting price | $123,994 |
| Platform | TL (Tall Boy) full-height |
| Exterior height | 9 feet |
| Ground clearance | 22 inches |
| Construction | Monocoque aerospace-grade aluminum, bulletproof windows throughout |
| Cabin | Pressurized with dual medical-grade HEPA air filtration |
| Rear door | Reinforced vault door with multi-point locking system |
| Windows | Spring-assisted with remote blast shields |
| Battery | 1,200Ah lithium (50% more than ELE) |
| Solar | 400W array |
| Propane | Dual system |
| Backup power | Portable generator |
| Surveillance | 360° night-vision CCTV array |
| Defense (non-lethal) | Remote-activated sonic defense system |
| Perimeter defense | Quad remote-controlled bear deterrent systems |
| Launcher | 37-millimeter flare launcher, remote deploy, reloadable from inside cabin |
| Strobes | Six remote strobe units |
| Weapons storage | Dual long rifle storage, dedicated gun safe |
| Safe | Concealed under-mattress safe |
| Medical | Integrated medical kit |
| Awareness | HAM radio, weather station, Geiger counter |
| Connectivity | Integrated Starlink |
| Climate | 12V air conditioning |
| Refrigeration | 45L 12V internal fridge |
| Water | Onboard filtration system |
| Roof | Observation deck with dual standing platforms, rapid-access escape hatch |
| Tires | 33-inch HD terrain on forged aluminum wheels |
| Spares | Dual full-size spare wheels and tires |
| Storage | Four passthrough bays, front utility box, dual swing-down tables (interior + exterior MOLLE) |
The TL Platform: Why It Matters for XLE
The XLE’s foundation is the TL platform — the same full-height, stand-up cabin that made the Tall Boy the first Mammoth trailer capable of sleeping a family of four with a real bathroom. That starting point matters because it gives the XLE something the ELE never had: genuine long-term livability. The ELE’s survivalist features were always impressive, but its teardrop cabin limited how long occupants could comfortably live inside it. The XLE takes all of those features — and adds more — while building them into a platform you could genuinely inhabit for an extended period.
The Pressurized Cabin
Like the ELE before it, the XLE features a positively-pressurized cabin — but scaled up to the TL’s larger footprint. The reinforced rear vault door uses a multi-point locking system, and every window is both bulletproof and fitted with remote blast shields that can be deployed instantly to harden the cabin against external threats. Dual medical-grade HEPA filtration keeps the interior air clean regardless of outside conditions — wildfire smoke, chemical particulates, or any other airborne hazard.
Situational Awareness and Defense
The XLE’s defense and awareness package is the most advanced Mammoth Overland has ever offered, and it’s meaningfully more capable than the ELE’s:
A 360° night-vision CCTV array provides continuous visual coverage of the entire perimeter. Should a threat be identified — wildlife or otherwise — the remote-activated sonic defense system provides non-lethal deterrence at distance, while four independent remote-controlled bear deterrent systems cover the perimeter on demand. A 37-millimeter flare launcher, reloadable from inside the cabin without exposing occupants, provides an additional layer of response capability. Six remote strobe units can disorient, signal, or control the scene. For those who require more permanent measures, dual long rifle storage and a dedicated gun safe are standard, alongside a concealed under-mattress safe and an integrated medical kit.
A HAM radio, onboard weather station, and Geiger counter ensure full-spectrum environmental awareness. Integrated Starlink keeps the XLE connected at any coordinate.
Power Independence
The XLE carries a 1,200Ah lithium battery system — 50% more capacity than the ELE — fed by a 400-watt solar array, dual propane system, and a portable generator for on-demand backup. That combination ensures the XLE never goes dark regardless of solar conditions or duration of deployment.
How the XLE Compares to the ELE
The XLE is explicitly positioned as an evolution of the ELE, not a replacement. The ELE’s teardrop platform remains in production for buyers who want the survivalist feature set in a lighter, more maneuverable package. The XLE is for buyers who want all of that — plus more — in a platform large enough to actually live in.
| Feature | ELE | XLE |
|---|---|---|
| Platform | Teardrop | Full-height TL |
| Battery | 400Ah | 1,200Ah |
| Solar | 200W | 400W |
| Bulletproof windows | Optional | Standard throughout |
| Flare launcher | No | Standard (37mm) |
| Night-vision CCTV | Camera system | 360° array |
| Starlink | Standard | Standard |
| Starting price | $67,000 | $123,994 |
Frequently Asked Questions
What does XLE stand for? XLE stands for “Xtinction-Level Escape” — a nod to its predecessor, the ELE (Extinction Level Event), positioning the XLE as the trailer that doesn’t just withstand an extinction-level event, but gets you out of it.
How much does the Mammoth XLE cost? The XLE starts at $123,994 and is built to order. Deposits are being accepted now with deliveries scheduled to begin in Q4 2026.
Are the XLE’s windows actually bulletproof? Yes — bulletproof windows are standard throughout the XLE, not an optional add-on as they were on the ELE.
What is the 37-millimeter launcher on the XLE? The XLE’s 37-millimeter flare launcher is a legally-classified non-monitored weapon (not a Class III firearm) that fires flares and flashbang-style munitions. It can be deployed remotely and reloaded from inside the cabin. Mammoth provides flare-compatible ammunition; customers can purchase other compatible 37mm munitions independently.
How does the XLE compare to the ELE? The XLE builds on the ELE’s survivalist DNA with a significantly larger full-height platform, 50% more battery capacity, standard bulletproof windows, a 37mm flare launcher, and a 360° night-vision CCTV array — at a starting price roughly $57,000 above the ELE.
Where can I see the XLE in person? You can see XLE at all four 2026 Overland Expo events throughout the U.S.
Ready to place a deposit on the XLE? Learn more or reserve yours directly with Mammoth Overland.