Mammoth WLY Trailer
A rugged, cold-weather–optimized teardrop camper built to handle long winter nights and extreme temperatures while still delivering overland capability and comfort. Known as the “Wooly,” this trailer combines the proven Mammoth HV platform with enhanced insulation and heating systems for four-season exploration.
Designed for adventurers who refuse to let winter stop them, the Mammoth WLY lets you explore snowy peaks, frozen lakes, and remote backcountry with confidence. Featuring thick wool insulation, powerful heating, and overlanding-ready gear.
❄️ Four-Season Thermal Performance
The WLY features significantly enhanced insulation—R25 in the floor and R10 in the walls and ceiling—far exceeding typical trailer standards. The interior cabin is lined with wool for cozy warmth and comfort, even in sub-zero conditions. Heated water lines and tanks keep plumbing flowing when temperatures drop.
🔥 Powerful Heating & Climate Control
At its heart is a high-output Truma VarioHeat 11,500 BTU forced-air heater, capable of maintaining comfortable interior temperatures in extreme cold, bringing true winter camping capability to a compact trailer. A Dometic RTX 2000 air conditioner also helps keep the cabin cool in warmer months.
🍳 Fully Equipped & Rugged
In addition to its winter-ready upgrades, the WLY includes all standard HV features such as a 2-burner outdoor galley kitchen, electric cooler/fridge, 21 gallon water tank with heated plumbing, king-size mattress, LED lighting, and solar power hookup.
⚡ Off-Grid Power & Gear Storage
Power comes from multiple sources: shore power, towing vehicle power, dual 100 W solar panels, and an onboard WEN 4,000 W generator feeding an 800 Ah lithium battery bank, giving you sustained off-grid capability. The roof rack and observation deck carry recovery boards, Rotopax storage, a krazy beaver shovel and room for more.
🚙 Rugged Off-Road Capability
Built on Mammoth’s robust HV chassis with Timbren 3500HD independent suspension and 33″ all-terrain tires on bronze wheels, the WLY is ready for harsh trails. Recovery ready frame and durable exterior make winter routes more accessible.
🏕️ Winter & Summer Ready
Though optimized for cold weather, WLY’s advanced insulation and climate control make it comfortable year-round, keeping interiors warm in snow and cool in heat. This trailer is as versatile as it is capable.
