In stock at Stone’s RV, the 2026 Keystone Cougar 360MBI is a 39-foot premium fifth wheel with a unique bonus room and loft that sleeps up to 10 people. With a shipping weight of 12,499 lbs and pin weight of 2,200 lbs, this Cougar is built for larger families who want flexible living space and room to spread out.

The 360MBI features 4 slideouts that open up the floorplan considerably. The mid-coach bonus room includes a tri-fold sleeper sofa, desk, and two wardrobes, with a loft above that adds sleeping space without taking up floor area. The rear living area features opposing slides with theater seating, a second tri-fold sleeper sofa, and a pivot hinge entertainment center that opens to a hidden pantry and cordless vacuum prep.

The kitchen island provides exceptional prep space, with a 16 cu ft 12V refrigerator, 21″ Furrion range, microwave that vents to the exterior, high-rise chef’s faucet, and black stainless undermount sink. The booth dinette features a bench seat ottoman with storage and two free-standing chairs.

The front bedroom includes a king bed with underbed storage, dresser with sliding top, full wardrobe with sliding mirror doors, washer/dryer prep, LED closet rod lighting, and bedside USB outlets. The full bathroom features a large shower with glass door and skylight, Oxygenics showerhead, porcelain foot-flush toilet, residential vanity with drawers, and linen cabinet.

Dual AC units keep things comfortable: a Furrion 18,000 BTU Chill Cube in the living area and a Furrion 15,000 BTU unit in the bedroom, both ducted, supported by a 30,000 BTU furnace and the Climate Guard protection package. Two power awnings with LED lighting, outdoor kitchen prep, full pass-through storage, HyperCore composite walls, DynaSpan flooring, MaxTurn Technology, Road Armor, Helux coil spring pin box, electric four-point auto leveling, tankless on-demand water heater, electric fireplace, Winegard Air 360+ antenna, and Rainier H-rated all-steel 16-ply tires complete the package.

Stone’s RV – your Nova Scotia Keystone Cougar dealer serving Atlantic Canada from New Glasgow and Sydney.

*Specifications are based on manufacturer data and may vary by unit. Please confirm details with our sales team prior to purchase.*