Grand Design Momentum 397THS Toy Hauler Fifth Wheels for Sale
The 2026 Grand Design Momentum 397THS is a flagship luxury toy hauler built for travelers who demand residential comfort, massive cargo capacity, and rugged off‑grid capability. At over 44 feet long with a triple‑axle foundation, the 397THS delivers exceptional stability, storage, and towing confidence. The 13'6" garage transforms from a high‑capacity cargo bay into a fully functional living space with a half bath, Happi‑Jac queen bed, rollover sofas, and its own entry door. Whether hauling ATVs, motorcycles, kayaks, or a side‑by‑side, the garage is engineered for serious adventure. Inside, the main living area features opposing slides, a large entertainment center, theater seating, a tri‑fold sofa, and a spacious kitchen with a 20‑cu‑ft 12V refrigerator, convection microwave, and a large island. The panoramic windows and high ceilings create an open, residential feel. Up front, the master suite includes a king bed, large wardrobe, washer/dryer prep, and direct access to the luxurious full bathroom with a 48" x 30" shower and molded seat. The Stealth 3+ A/C system provides 30,000 BTU of ultra‑quiet cooling, while the 40,000 BTU furnace and tankless water heater ensure year‑round comfort. With three awnings, a 60‑gallon fuel station, optional 5.5kW generator, and available 3,000W solar package, the Momentum 397THS is built for extended stays, remote camping, and high‑end adventure living. It’s a true luxury home on wheels designed for travelers who want capability without compromise.
General RV works hard to ensure the accuracy of all its listings however we are not responsible for any misprints, typos, or errors found in our website pages. Manufacturer-provided pictures, specifications and features may be used as needed. Inventory shown may be only a partial listing of the entire inventory. Please contact us at 888-436-7578 for availability as our inventory changes rapidly.
*All RV prices exclude tax, title, registration and fees, including documentary service fees. All payments are with approved credit through dealer lending source. Advertised monthly payment is based on 20% cash down, plus tax, title, registration and fees, at 7.99% APR for 96 months on finance amounts under $10K, at 7.99% APR for 144 months on finance amounts from $10K to $25K, at 7.99% APR for 180 months on finance amounts from $25K to $50K, and at 7.99% APR for 240 months on amounts over $50K. $79 monthly payment based on purchase price of $9,999 with 20% down at 8.24% APR for 218 months. $439 monthly payment based on purchase price of $69,995 with 20% down, at 6.49% APR for 240 months. For select models only. Rate and payments are subject to change at any time. Conditions apply. See dealer for details.