$138,105
The 13-foot garage is the headline here, but what keeps owners loyal is everything surrounding it. Hydraulic leveling, triple AC, and interiors that lean residential rather than camper-grade. Grand Design backs the Momentum M-Class with an 18-year roof warranty, three-year structural coverage, and five-year protection on axles and tires, which says something about how they feel about their own build quality. At 40 feet, the 336M gives you genuine living space alongside serious hauling capacity, and the high-end finishes throughout make base camp feel less like roughing it and more like a second home that happens to fit your toys.
Other fifth wheel trailers floor plans (around 39 ft 10 in, near $138,000), similar in size and price to the Momentum M-Class 336M.
