Mammoth Overland, subsidiary of Vashon Aircraft, announced its XLE, also known as “Xtinction-Level Escape,” the brand’s most capable off-road trailer to date. Built on the full-height TL (Tall Boy) platform — nine feet tall, 22 inches of ground clearance and all-aluminum aircraft-grade construction — the XLE combines the spaciousness families fell in love with in TL and the hardcore survivalist DNA of its Extinction Level Event (ELE). The result is a basecamp that’s equally prepared for a week of backcountry snowshoeing and whatever civilization decides to throw at it, Mammoth Overland said in a recent release.
Mammoth Overland President Scott Taylor had a simple brief for XLE: take everything the ELE proved was possible and build it into a platform big enough to live in. Engineers started with TL’s full-height cabin and went to work, the company said. The XLE’s pressurized interior features dual medical-grade HEPA air filtration and bulletproof windows throughout, keeping occupants sealed inside a clean, controlled environment regardless of outside conditions. A reinforced rear vault door with a multipoint locking system and spring-assisted windows with remote blast shields mean that when XLE is locked down, it stays locked down.
“With the ELE, we proved that an off-road trailer could be truly self-sufficient and secure,” said Taylor. “XLE takes that proof of concept and scales it up. This is the trailer for people who want a real basecamp — somewhere they can operate out of, not just sleep in.”
Power is never a concern aboard XLE. A massive 1,200-amp-hour lithium battery system — 50% more capacity than ELE — is fed by a premium 400-watt solar array, dual propane system and a portable generator for on-demand backup. Integrated Starlink keeps XLE connected at any coordinate, Mammoth Overland said. A 12-volt air conditioning system, 45-liter 12-volt internal fridge and onboard water filtration system with instant access to clean drinking water round out the self-sufficiency package.
XLE’s situational awareness suite is the most advanced Mammoth Overland has ever offered, the company said. A 360-degree night-vision CCTV array provides continuous visual coverage of the perimeter. Should campers identify a threat — of the ursine or otherwise variety — XLE’s remote-activated sonic defense system provides nonlethal deterrence at distance, while quad remote-controlled bear deterrent systems cover the perimeter on demand. A remote-deploy 37-millimeter flare launcher, reloadable from inside the cabin, offers an additional layer of response capability. A rooftop observation deck with dual standing platforms, a rapid-access roof escape hatch and six remote strobe units complete the picture.
For those who require something more permanent, XLE includes dual long rifle storage, a dedicated gun safe, an integrated medical kit and a concealed under-mattress safe. A HAM radio, weather station and Geiger counter ensure occupants are never without full-spectrum awareness of their environment.
On the trail, XLE rides on forged aluminum wheels wrapped in 33-inch HD terrain tires, with dual full-size spare wheels and tires carried as standard. A front-end rock guard shields against debris, brush and trail impact, Mammoth Overland said. Four passthrough storage bays provide fast-access gear organization, supplemented by a front utility storage box and dual swing-down tables — one interior, one exterior MOLLE-equipped — for a deployable workspace anywhere. An overhead spice cabinet rounds things out, because even operators eat well.
“XLE is what happens when you stop asking ‘how capable can a trailer be’ and start asking ‘how capable do we want it to be,’” Taylor added. “This team built something I genuinely didn’t think was possible. XLE isn’t just a trailer; it’s a mobile operations center.”
The fully loaded Mammoth Overland XLE trailer is priced at $123,994 and is built to order. Mammoth Overland said it is accepting deposits now. Deliveries are scheduled to begin in the fourth quarter of 2026. Learn more at mammothoverland.com/xle.
