2026 GRAND DESIGN MOMENTUM 397THS
Description
NEW 2026 GRAND DESIGN MOMENTUM 397THS – 358314
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 and generator, 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.
Mileage: 0
Height: 13Specifications
Stock Number358314
VIN573FM4637TBB04772
Year2026
CategoryFifth Wheel Toy Haulers
ManufacturerGRAND DESIGN
ModelMOMENTUM 397THS
LocationDraper, Utah 84020
ConditionNew
Fresh Water Tank Capacity140 gal
Gray Water Tank Capacity104 gal
Black Water Tank Capacity104 gal
Sleeps8
Number of Slide Outs3
Hitch Weight3,450 lb
Exterior Length3 ft 8 in
Exterior Width8 in
Shipping Weight17,514 lb
Stock Number358314|
VIN573FM4637TBB04772|
Year2026|
CategoryFifth Wheel Toy Haulers|
ManufacturerGRAND DESIGN|
ModelMOMENTUM 397THS|
LocationDraper, Utah 84020|
ConditionNew|
Fresh Water Tank Capacity140 gal|
Gray Water Tank Capacity104 gal|
Black Water Tank Capacity104 gal|
Sleeps8|
Number of Slide Outs3|
Hitch Weight3,450 lb|
Exterior Length3 ft 8 in|
Exterior Width8 in|
Shipping Weight17,514 lb|
