The Mammoth Overland TL — nicknamed “Tall Boy” — is the brand’s first full-height off-road trailer, standing nine feet tall and priced at $72,000. Built on the same aerospace-grade aluminum monocoque platform shared across the Mammoth lineup, the TL is designed to take families further into the backcountry than any comparably-sized camper trailer on the market, with 22 inches of ground clearance, a king-size bed, two full-length bunks, and a full bathroom with standup shower.
The Short Answer
The TL exists because Mammoth Overland’s existing trailers — the HV, WLY, and ELE — are all teardrop-style designs with low-profile cabins you can’t stand up in. For solo overlanders or couples, that’s a reasonable tradeoff for weight and size. For families, it’s a dealbreaker. The TL answers that by building Mammoth’s core aerospace construction and off-road capability into a full-height, stand-up cabin with enough sleeping space for four adults, an indoor bathroom, and the 22-inch ground clearance needed to reach the remote spots most family campers never see.
Full Specifications
| Spec | Detail |
|---|---|
| Starting price | $72,000 (Genesis Edition, limited to 10 units) |
| Exterior height | 9 feet |
| Dry weight | 2,900 lbs |
| Ground clearance | 22 inches |
| Sleeping capacity | 4 adults |
| King bed | Standard |
| Bunks | Two full-length (accommodates up to 6’2″) |
| Bathroom | Full — standup shower, sink, cassette toilet |
| Water tank | 50 gallons |
| Hot water | Instant hot water system |
| Heating | Propane-fired Dickenson heater |
| Battery | 400Ah Renogy lithium (self-heating) |
| Solar | Two 100W Renogy flexible panels |
| Television | 24-inch LCD |
| Awning | 270-degree 23Zero |
| Tires | 33-inch on 17-inch dual independent axle wheels |
| Roof rack | 1,000 lbs static / 500 lbs dynamic |
| Construction | Monocoque aerospace-grade aluminum |
Why Ground Clearance Is the Real Story
Most family-oriented off-road trailers top out at 12–15 inches of ground clearance — enough for graded forest roads and mild trails, but not enough to access the genuinely remote spots that make backcountry camping worth the investment. The TL’s 22 inches of ground clearance is, according to Mammoth Overland, far more than any competitor in the full-height segment.
That clearance comes from dual independent axles fitted with 33-inch tires on 17-inch wheels — a setup that also contributes to the trailer’s trail manners, since independent suspension on each wheel lets the TL absorb obstacles without transmitting the shock to the tow vehicle. The result is a nine-foot-tall, 2,900-pound trailer that can access terrain typically off-limits to camper trailers — which is precisely the point.
The Bathroom: The Feature That Required the Most Iteration
According to Mammoth Overland President Scott Taylor, the TL’s bathroom was redesigned multiple times before the team landed on the final configuration. The goal was to bring full home-level bathroom convenience into the backcountry — a standup shower, a sink with running water, and a cassette toilet — without compromising the cabin space or structural integrity.
The result: both the shower and sink run on instant hot water fed by the trailer’s 50-gallon onboard tank, which is the largest water capacity in the Mammoth lineup. For context, the HV and ELE use significantly smaller water systems; the TL’s tank is sized for families on multi-day trips who need consistent access to hot water across multiple users.
Sleeping Capacity and Interior Layout
The TL’s interior is organized around the king-size mattress that Taylor has said his wife required as a non-negotiable design constraint — a detail that speaks to how practically the trailer was spec’d. From there, designers added two full-length bunk beds, both long enough to comfortably accommodate a 6’2″ adult. The top bunk folds down to create a couch-style sitting area when not in use; the lower bunk has a dedicated cubby with its own lighting controls.
Storage lives beneath the king bed, and dozens of USB charging ports are built into the cabin throughout — a practical detail that reflects the TL’s family design brief. A 24-inch LCD television is standard.
Kitchen and Exterior
Like Mammoth’s other trailers, the TL’s kitchen lives outside rather than inside the cabin — a deliberate choice the brand frames as fitting the outdoor experience. The exterior kitchen includes a sink, stove, and 42-quart fridge, covered by a 270-degree 23Zero awning. The pantry is designed as a passthrough, accessible from both inside and outside the cabin.
Getting in and out is handled via fold-down stairs beneath an aviation-style two-piece door — a nod to Vashon Aircraft’s design language that appears across the Mammoth lineup. The roof rack is rated to 1,000 pounds static and 500 pounds dynamic, with a standard exterior MOLLE panel and ladder accessing the top.
How the TL Compares to the Rest of the Lineup
The TL is the only full-height, stand-up trailer in the Mammoth lineup. The HV, WLY, and ELE all share a lower-profile teardrop-style cabin — better for weight savings and aerodynamics, but not designed for family groups or for anyone who wants to stand upright inside. If you’re choosing between the TL and those models, the decision largely comes down to who’s coming with you. Solo or couple → HV, WLY, or ELE. Family of four → TL.
The XLE, launched in 2026, uses the TL’s full-height platform as its base but adds the ELE’s hardcore survivalist and security features — bulletproof windows, pressurized cabin, 37mm flare launcher — at a starting price of $123,994.
Frequently Asked Questions
How much does the Mammoth TL cost? The TL’s Genesis Edition — the first limited production run of 10 units — is priced at $72,000. Standard production pricing will be announced after the Genesis Edition sells out.
How tall is the Mammoth TL? The TL stands nine feet tall externally, making it the tallest trailer in the Mammoth lineup and, according to the company, the tallest off-road camper trailer in its segment.
Can the Mammoth TL go off-road? Yes — the TL’s 22 inches of ground clearance, dual independent axle suspension, and 33-inch tires are specifically engineered for off-road use. It’s designed to access backcountry terrain normally inaccessible to full-height family campers.
How many people can sleep in the Mammoth TL? Four adults comfortably — one king bed and two full-length bunks, both long enough to sleep a 6’2″ adult.
Does the Mammoth TL have a bathroom? Yes — a full indoor bathroom with standup shower, sink, and cassette toilet, fed by an instant hot water system and a 50-gallon onboard water tank.
Ready to build your own TL? Explore the full feature list or place your reservation directly with Mammoth Overland.